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<!DOCTYPE html>
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<h1>leancloud.object_ 源代码</h1><div class="highlight"><pre>
<span></span><span class="c1"># coding: utf-8</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">absolute_import</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">division</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">print_function</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">unicode_literals</span>
<span class="kn">import</span> <span class="nn">copy</span>
<span class="kn">import</span> <span class="nn">json</span>
<span class="kn">import</span> <span class="nn">six</span>
<span class="kn">from</span> <span class="nn">werkzeug.local</span> <span class="kn">import</span> <span class="n">LocalProxy</span>
<span class="kn">import</span> <span class="nn">leancloud</span>
<span class="kn">from</span> <span class="nn">leancloud</span> <span class="kn">import</span> <span class="n">utils</span>
<span class="kn">from</span> <span class="nn">leancloud</span> <span class="kn">import</span> <span class="n">client</span>
<span class="kn">from</span> <span class="nn">leancloud</span> <span class="kn">import</span> <span class="n">operation</span>
<span class="n">__author__</span> <span class="o">=</span> <span class="s2">"asaka <lan@leancloud.rocks>"</span>
<span class="n">object_class_map</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">class</span> <span class="nc">ObjectMeta</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="k">def</span> <span class="fm">__new__</span><span class="p">(</span><span class="n">mcs</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">bases</span><span class="p">,</span> <span class="n">attrs</span><span class="p">):</span>
<span class="n">cached_class</span> <span class="o">=</span> <span class="n">object_class_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
<span class="k">if</span> <span class="n">cached_class</span><span class="p">:</span>
<span class="k">return</span> <span class="n">cached_class</span>
<span class="n">super_new</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">ObjectMeta</span><span class="p">,</span> <span class="n">mcs</span><span class="p">)</span><span class="o">.</span><span class="fm">__new__</span>
<span class="c1"># let user define their class_name at subclass-creation stage</span>
<span class="n">class_name</span> <span class="o">=</span> <span class="n">attrs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"class_name"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">class_name</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="n">class_name</span>
<span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"User"</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"_User"</span>
<span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"Installation"</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"_Installation"</span>
<span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"Notification"</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"_Notification"</span>
<span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"Role"</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"_Role"</span>
<span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"Conversation"</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"_Conversation"</span>
<span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"SysMessage"</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"_SysMessage"</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">attrs</span><span class="p">[</span><span class="s2">"_class_name"</span><span class="p">]</span> <span class="o">=</span> <span class="n">name</span>
<span class="n">object_class</span> <span class="o">=</span> <span class="n">super_new</span><span class="p">(</span><span class="n">mcs</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">bases</span><span class="p">,</span> <span class="n">attrs</span><span class="p">)</span>
<span class="n">object_class_map</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">object_class</span>
<span class="k">return</span> <span class="n">object_class</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">query</span><span class="p">(</span><span class="bp">cls</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 获取当前对象的 Query 对象。</span>
<span class="sd"> :rtype: leancloud.Query</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">leancloud</span><span class="o">.</span><span class="n">Query</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span>
<div class="viewcode-block" id="Object"><a class="viewcode-back" href="../../index.html#leancloud.Object">[文档]</a><span class="k">class</span> <span class="nc">Object</span><span class="p">(</span><span class="n">six</span><span class="o">.</span><span class="n">with_metaclass</span><span class="p">(</span><span class="n">ObjectMeta</span><span class="p">,</span> <span class="nb">object</span><span class="p">)):</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">attrs</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 创建一个新的 leancloud.Object</span>
<span class="sd"> :param attrs: 对象属性</span>
<span class="sd"> :return:</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">id</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span> <span class="c1"># for IDE</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_changes</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_flags</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">created_at</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">updated_at</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">six</span><span class="o">.</span><span class="n">iteritems</span><span class="p">(</span><span class="n">attrs</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">k</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
<div class="viewcode-block" id="Object.extend"><a class="viewcode-back" href="../../index.html#leancloud.Object.extend">[文档]</a> <span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">extend</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 派生一个新的 leancloud.Object 子类</span>
<span class="sd"> :param name: 子类名称</span>
<span class="sd"> :type name: string_types</span>
<span class="sd"> :return: 派生的子类</span>
<span class="sd"> :rtype: ObjectMeta</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">six</span><span class="o">.</span><span class="n">PY2</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">text_type</span><span class="p">):</span>
<span class="c1"># In python2, class name must be a python2 str.</span>
<span class="n">name</span> <span class="o">=</span> <span class="n">name</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s2">"utf-8"</span><span class="p">)</span>
<span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="p">(</span><span class="bp">cls</span><span class="p">,),</span> <span class="p">{})</span></div>
<div class="viewcode-block" id="Object.create"><a class="viewcode-back" href="../../index.html#leancloud.Object.create">[文档]</a> <span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">create</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">class_name</span><span class="p">,</span> <span class="o">**</span><span class="n">attributes</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 根据参数创建一个 leancloud.Object 的子类的实例化对象</span>
<span class="sd"> :param class_name: 子类名称</span>
<span class="sd"> :type class_name: string_types</span>
<span class="sd"> :param attributes: 对象属性</span>
<span class="sd"> :return: 派生子类的实例</span>
<span class="sd"> :rtype: Object</span>
<span class="sd"> """</span>
<span class="n">object_class</span> <span class="o">=</span> <span class="bp">cls</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">class_name</span><span class="p">)</span>
<span class="k">return</span> <span class="n">object_class</span><span class="p">(</span><span class="o">**</span><span class="n">attributes</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.create_without_data"><a class="viewcode-back" href="../../index.html#leancloud.Object.create_without_data">[文档]</a> <span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">create_without_data</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">id_</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 根据 objectId 创建一个 leancloud.Object，代表一个服务器上已经存在的对象。可以调用 fetch 方法来获取服务器上的数据</span>
<span class="sd"> :param id_: 对象的 objectId</span>
<span class="sd"> :type id_: string_types</span>
<span class="sd"> :return: 没有数据的对象</span>
<span class="sd"> :rtype: Object</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="bp">cls</span> <span class="ow">is</span> <span class="n">Object</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s2">"can not call create_without_data on leancloud.Object"</span><span class="p">)</span>
<span class="n">obj</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">()</span>
<span class="n">obj</span><span class="o">.</span><span class="n">id</span> <span class="o">=</span> <span class="n">id_</span>
<span class="k">return</span> <span class="n">obj</span></div>
<div class="viewcode-block" id="Object.save_all"><a class="viewcode-back" href="../../index.html#leancloud.Object.save_all">[文档]</a> <span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">save_all</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">objs</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在一个请求中 save 多个 leancloud.Object 对象实例。</span>
<span class="sd"> :param objs: 需要 save 的对象</span>
<span class="sd"> :type objs: list</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">objs</span><span class="p">:</span>
<span class="k">return</span>
<span class="k">return</span> <span class="bp">cls</span><span class="p">()</span><span class="o">.</span><span class="n">_deep_save</span><span class="p">(</span><span class="n">objs</span><span class="p">,</span> <span class="p">[])</span></div>
<div class="viewcode-block" id="Object.destroy_all"><a class="viewcode-back" href="../../index.html#leancloud.Object.destroy_all">[文档]</a> <span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">destroy_all</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">objs</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在一个请求中 destroy 多个 leancloud.Object 对象实例。</span>
<span class="sd"> :param objs: 需要 destroy 的对象</span>
<span class="sd"> :type objs: list</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">objs</span><span class="p">:</span>
<span class="k">return</span>
<span class="k">if</span> <span class="nb">any</span><span class="p">(</span><span class="n">x</span><span class="o">.</span><span class="n">is_new</span><span class="p">()</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">objs</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"Could not destroy unsaved object"</span><span class="p">)</span>
<span class="n">dumped_objs</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">obj</span> <span class="ow">in</span> <span class="n">objs</span><span class="p">:</span>
<span class="n">dumped_obj</span> <span class="o">=</span> <span class="p">{</span>
<span class="s2">"method"</span><span class="p">:</span> <span class="s2">"DELETE"</span><span class="p">,</span>
<span class="s2">"path"</span><span class="p">:</span> <span class="s2">"/</span><span class="si">{0}</span><span class="s2">/classes/</span><span class="si">{1}</span><span class="s2">/</span><span class="si">{2}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
<span class="n">client</span><span class="o">.</span><span class="n">SERVER_VERSION</span><span class="p">,</span> <span class="n">obj</span><span class="o">.</span><span class="n">_class_name</span><span class="p">,</span> <span class="n">obj</span><span class="o">.</span><span class="n">id</span>
<span class="p">),</span>
<span class="s2">"body"</span><span class="p">:</span> <span class="n">obj</span><span class="o">.</span><span class="n">_flags</span><span class="p">,</span>
<span class="p">}</span>
<span class="n">dumped_objs</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">dumped_obj</span><span class="p">)</span>
<span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">post</span><span class="p">(</span><span class="s2">"/batch"</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="p">{</span><span class="s2">"requests"</span><span class="p">:</span> <span class="n">dumped_objs</span><span class="p">})</span><span class="o">.</span><span class="n">json</span><span class="p">()</span>
<span class="n">errors</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">idx</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">objs</span><span class="p">)):</span>
<span class="n">content</span> <span class="o">=</span> <span class="n">response</span><span class="p">[</span><span class="n">idx</span><span class="p">]</span>
<span class="n">error</span> <span class="o">=</span> <span class="n">content</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"error"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">error</span><span class="p">:</span>
<span class="n">errors</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="n">leancloud</span><span class="o">.</span><span class="n">LeanCloudError</span><span class="p">(</span><span class="n">error</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"code"</span><span class="p">),</span> <span class="n">error</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"error"</span><span class="p">))</span>
<span class="p">)</span>
<span class="k">if</span> <span class="n">errors</span><span class="p">:</span>
<span class="c1"># TODO: how to raise list of errors?</span>
<span class="c1"># raise MultipleValidationErrors(errors)</span>
<span class="c1"># add test</span>
<span class="k">raise</span> <span class="n">errors</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span></div>
<div class="viewcode-block" id="Object.dump"><a class="viewcode-back" href="../../index.html#leancloud.Object.dump">[文档]</a> <span class="k">def</span> <span class="nf">dump</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">obj</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dump</span><span class="p">()</span>
<span class="n">obj</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"__type"</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"className"</span><span class="p">)</span>
<span class="k">return</span> <span class="n">obj</span></div>
<span class="k">def</span> <span class="nf">_dump</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">obj</span> <span class="o">=</span> <span class="n">copy</span><span class="o">.</span><span class="n">deepcopy</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">)</span>
<span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">six</span><span class="o">.</span><span class="n">iteritems</span><span class="p">(</span><span class="n">obj</span><span class="p">):</span>
<span class="n">obj</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">utils</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="n">v</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">obj</span><span class="p">[</span><span class="s2">"objectId"</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span>
<span class="n">obj</span><span class="p">[</span><span class="s2">"__type"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"Object"</span>
<span class="n">obj</span><span class="p">[</span><span class="s2">"className"</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span>
<span class="k">return</span> <span class="n">obj</span>
<div class="viewcode-block" id="Object.destroy"><a class="viewcode-back" href="../../index.html#leancloud.Object.destroy">[文档]</a> <span class="k">def</span> <span class="nf">destroy</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 从服务器上删除这个对象</span>
<span class="sd"> :rtype: None</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">:</span>
<span class="k">return</span>
<span class="n">client</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="s2">"/classes/</span><span class="si">{0}</span><span class="s2">/</span><span class="si">{1}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">_flags</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.save"><a class="viewcode-back" href="../../index.html#leancloud.Object.save">[文档]</a> <span class="k">def</span> <span class="nf">save</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">where</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">fetch_when_save</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 将对象数据保存至服务器</span>
<span class="sd"> :return: None</span>
<span class="sd"> :rtype: None</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">where</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">where</span><span class="p">,</span> <span class="n">leancloud</span><span class="o">.</span><span class="n">Query</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="s2">"where param type should be leancloud.Query, got </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="nb">type</span><span class="p">(</span><span class="n">where</span><span class="p">)</span>
<span class="p">)</span>
<span class="k">if</span> <span class="n">where</span> <span class="ow">and</span> <span class="n">where</span><span class="o">.</span><span class="n">_query_class</span><span class="o">.</span><span class="n">_class_name</span> <span class="o">!=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="s2">"where param's class name not equal to the current object's class name"</span>
<span class="p">)</span>
<span class="k">if</span> <span class="n">where</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_new</span><span class="p">():</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"where params works only when leancloud.Object is saved"</span><span class="p">)</span>
<span class="n">unsaved_children</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">unsaved_files</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_find_unsaved_children</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">,</span> <span class="n">unsaved_children</span><span class="p">,</span> <span class="n">unsaved_files</span><span class="p">)</span>
<span class="k">if</span> <span class="n">unsaved_children</span> <span class="ow">or</span> <span class="n">unsaved_files</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_deep_save</span><span class="p">(</span><span class="n">unsaved_children</span><span class="p">,</span> <span class="n">unsaved_files</span><span class="p">,</span> <span class="n">exclude</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">)</span>
<span class="n">data</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dump_save</span><span class="p">()</span>
<span class="n">fetch_when_save</span> <span class="o">=</span> <span class="s2">"true"</span> <span class="k">if</span> <span class="n">fetch_when_save</span> <span class="k">else</span> <span class="s2">"false"</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_new</span><span class="p">():</span>
<span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">post</span><span class="p">(</span>
<span class="s2">"/classes/</span><span class="si">{0}</span><span class="s2">?fetchWhenSave=</span><span class="si">{1}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span><span class="p">,</span> <span class="n">fetch_when_save</span>
<span class="p">),</span>
<span class="n">data</span><span class="p">,</span>
<span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">url</span> <span class="o">=</span> <span class="s2">"/classes/</span><span class="si">{0}</span><span class="s2">/</span><span class="si">{1}</span><span class="s2">?fetchWhenSave=</span><span class="si">{2}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">,</span> <span class="n">fetch_when_save</span>
<span class="p">)</span>
<span class="k">if</span> <span class="n">where</span><span class="p">:</span>
<span class="n">url</span> <span class="o">+=</span> <span class="s2">"&where="</span> <span class="o">+</span> <span class="n">json</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span>
<span class="n">where</span><span class="o">.</span><span class="n">dump</span><span class="p">()[</span><span class="s2">"where"</span><span class="p">],</span> <span class="n">separators</span><span class="o">=</span><span class="p">(</span><span class="s2">","</span><span class="p">,</span> <span class="s2">":"</span><span class="p">)</span>
<span class="p">)</span>
<span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="n">url</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_update_data</span><span class="p">(</span><span class="n">response</span><span class="o">.</span><span class="n">json</span><span class="p">())</span></div>
<span class="k">def</span> <span class="nf">_deep_save</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unsaved_children</span><span class="p">,</span> <span class="n">unsaved_files</span><span class="p">,</span> <span class="n">exclude</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="n">exclude</span><span class="p">:</span>
<span class="n">unsaved_children</span> <span class="o">=</span> <span class="p">[</span><span class="n">x</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">unsaved_children</span> <span class="k">if</span> <span class="n">x</span> <span class="o">!=</span> <span class="n">exclude</span><span class="p">]</span>
<span class="k">for</span> <span class="n">f</span> <span class="ow">in</span> <span class="n">unsaved_files</span><span class="p">:</span>
<span class="n">f</span><span class="o">.</span><span class="n">save</span><span class="p">()</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">unsaved_children</span><span class="p">:</span>
<span class="k">return</span>
<span class="n">dumped_objs</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">obj</span> <span class="ow">in</span> <span class="n">unsaved_children</span><span class="p">:</span>
<span class="k">if</span> <span class="n">obj</span><span class="o">.</span><span class="n">id</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">method</span> <span class="o">=</span> <span class="s2">"POST"</span>
<span class="n">path</span> <span class="o">=</span> <span class="s2">"/</span><span class="si">{0}</span><span class="s2">/classes/</span><span class="si">{1}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">client</span><span class="o">.</span><span class="n">SERVER_VERSION</span><span class="p">,</span> <span class="n">obj</span><span class="o">.</span><span class="n">_class_name</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">method</span> <span class="o">=</span> <span class="s2">"PUT"</span>
<span class="n">path</span> <span class="o">=</span> <span class="s2">"/</span><span class="si">{0}</span><span class="s2">/classes/</span><span class="si">{1}</span><span class="s2">/</span><span class="si">{2}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
<span class="n">client</span><span class="o">.</span><span class="n">SERVER_VERSION</span><span class="p">,</span> <span class="n">obj</span><span class="o">.</span><span class="n">_class_name</span><span class="p">,</span> <span class="n">obj</span><span class="o">.</span><span class="n">id</span>
<span class="p">)</span>
<span class="n">body</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">_dump_save</span><span class="p">()</span>
<span class="n">dumped_obj</span> <span class="o">=</span> <span class="p">{</span>
<span class="s2">"method"</span><span class="p">:</span> <span class="n">method</span><span class="p">,</span>
<span class="s2">"path"</span><span class="p">:</span> <span class="n">path</span><span class="p">,</span>
<span class="s2">"body"</span><span class="p">:</span> <span class="n">body</span><span class="p">,</span>
<span class="p">}</span>
<span class="n">dumped_objs</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">dumped_obj</span><span class="p">)</span>
<span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">post</span><span class="p">(</span><span class="s2">"/batch"</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="p">{</span><span class="s2">"requests"</span><span class="p">:</span> <span class="n">dumped_objs</span><span class="p">})</span><span class="o">.</span><span class="n">json</span><span class="p">()</span>
<span class="n">errors</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">idx</span><span class="p">,</span> <span class="n">obj</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">unsaved_children</span><span class="p">):</span>
<span class="n">content</span> <span class="o">=</span> <span class="n">response</span><span class="p">[</span><span class="n">idx</span><span class="p">]</span>
<span class="n">error</span> <span class="o">=</span> <span class="n">content</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"error"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">error</span><span class="p">:</span>
<span class="n">errors</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="n">leancloud</span><span class="o">.</span><span class="n">LeanCloudError</span><span class="p">(</span><span class="n">error</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"code"</span><span class="p">),</span> <span class="n">error</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"error"</span><span class="p">))</span>
<span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">obj</span><span class="o">.</span><span class="n">_update_data</span><span class="p">(</span><span class="n">content</span><span class="p">[</span><span class="s2">"success"</span><span class="p">])</span>
<span class="k">if</span> <span class="n">errors</span><span class="p">:</span>
<span class="c1"># TODO: how to raise list of errors?</span>
<span class="c1"># raise MultipleValidationErrors(errors)</span>
<span class="c1"># add test</span>
<span class="k">raise</span> <span class="n">errors</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_find_unsaved_children</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">obj</span><span class="p">,</span> <span class="n">children</span><span class="p">,</span> <span class="n">files</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">callback</span><span class="p">(</span><span class="n">o</span><span class="p">):</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">Object</span><span class="p">):</span>
<span class="k">if</span> <span class="n">o</span><span class="o">.</span><span class="n">is_dirty</span><span class="p">():</span>
<span class="n">children</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
<span class="k">return</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">leancloud</span><span class="o">.</span><span class="n">File</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">o</span><span class="o">.</span><span class="n">url</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">o</span><span class="o">.</span><span class="n">id</span><span class="p">:</span>
<span class="n">files</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
<span class="k">return</span>
<span class="n">utils</span><span class="o">.</span><span class="n">traverse_object</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">callback</span><span class="p">)</span>
<div class="viewcode-block" id="Object.is_dirty"><a class="viewcode-back" href="../../index.html#leancloud.Object.is_dirty">[文档]</a> <span class="k">def</span> <span class="nf">is_dirty</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="c1"># consider renaming to is_changed?</span>
<span class="k">if</span> <span class="n">attr</span><span class="p">:</span>
<span class="k">return</span> <span class="n">attr</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_changes</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">_changes</span><span class="p">)</span></div>
<span class="k">def</span> <span class="nf">_to_pointer</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="p">{</span>
<span class="s2">"__type"</span><span class="p">:</span> <span class="s2">"Pointer"</span><span class="p">,</span>
<span class="s2">"className"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span><span class="p">,</span>
<span class="s2">"objectId"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">,</span>
<span class="p">}</span>
<span class="k">def</span> <span class="nf">_merge_metadata</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">server_data</span><span class="p">):</span>
<span class="n">object_id</span> <span class="o">=</span> <span class="n">server_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"objectId"</span><span class="p">)</span>
<span class="n">_created_at</span> <span class="o">=</span> <span class="n">utils</span><span class="o">.</span><span class="n">decode_date_string</span><span class="p">(</span><span class="n">server_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"createdAt"</span><span class="p">))</span>
<span class="n">_updated_at</span> <span class="o">=</span> <span class="n">utils</span><span class="o">.</span><span class="n">decode_updated_at</span><span class="p">(</span><span class="n">server_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"updatedAt"</span><span class="p">),</span> <span class="n">_created_at</span><span class="p">)</span>
<span class="k">if</span> <span class="n">object_id</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">id</span> <span class="o">=</span> <span class="n">object_id</span>
<span class="k">if</span> <span class="n">_created_at</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">created_at</span> <span class="o">=</span> <span class="n">_created_at</span>
<span class="k">if</span> <span class="n">_updated_at</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">updated_at</span> <span class="o">=</span> <span class="n">_updated_at</span>
<div class="viewcode-block" id="Object.validate"><a class="viewcode-back" href="../../index.html#leancloud.Object.validate">[文档]</a> <span class="k">def</span> <span class="nf">validate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attrs</span><span class="p">):</span>
<span class="k">if</span> <span class="s2">"ACL"</span> <span class="ow">in</span> <span class="n">attrs</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">attrs</span><span class="p">[</span><span class="s2">"ACL"</span><span class="p">],</span> <span class="n">leancloud</span><span class="o">.</span><span class="n">ACL</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"acl must be a ACL"</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">True</span></div>
<div class="viewcode-block" id="Object.get"><a class="viewcode-back" href="../../index.html#leancloud.Object.get">[文档]</a> <span class="k">def</span> <span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">deafult</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 获取对象字段的值</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :type attr: string_types</span>
<span class="sd"> :return: 字段值</span>
<span class="sd"> """</span>
<span class="c1"># for backward compatibility</span>
<span class="k">if</span> <span class="p">(</span><span class="n">deafult</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">default</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">):</span>
<span class="n">default</span> <span class="o">=</span> <span class="n">deafult</span>
<span class="c1"># createdAt is stored as string in the cloud but used as datetime object on the client side.</span>
<span class="c1"># We need to make sure that `.created_at` and `.get("createdAt")` return the same value.</span>
<span class="c1"># Otherwise users will get confused.</span>
<span class="k">if</span> <span class="n">attr</span> <span class="o">==</span> <span class="s2">"createdAt"</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">created_at</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">created_at</span>
<span class="c1"># Similar to createdAt.</span>
<span class="k">if</span> <span class="n">attr</span> <span class="o">==</span> <span class="s2">"updatedAt"</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">updated_at</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">updated_at</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">default</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.relation"><a class="viewcode-back" href="../../index.html#leancloud.Object.relation">[文档]</a> <span class="k">def</span> <span class="nf">relation</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 返回对象上相应字段的 Relation</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :type attr: string_types</span>
<span class="sd"> :return: Relation</span>
<span class="sd"> :rtype: leancloud.Relation</span>
<span class="sd"> """</span>
<span class="n">value</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">attr</span><span class="p">)</span>
<span class="k">if</span> <span class="n">value</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">leancloud</span><span class="o">.</span><span class="n">Relation</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"field </span><span class="si">%s</span><span class="s2"> is not Relation"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">attr</span><span class="p">))</span>
<span class="n">value</span><span class="o">.</span><span class="n">_ensure_parent_and_key</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">)</span>
<span class="k">return</span> <span class="n">value</span>
<span class="k">return</span> <span class="n">leancloud</span><span class="o">.</span><span class="n">Relation</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.has"><a class="viewcode-back" href="../../index.html#leancloud.Object.has">[文档]</a> <span class="k">def</span> <span class="nf">has</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 判断此字段是否有值</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :return: 当有值时返回 True， 否则返回 False</span>
<span class="sd"> :rtype: bool</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">attr</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span></div>
<div class="viewcode-block" id="Object.set"><a class="viewcode-back" href="../../index.html#leancloud.Object.set">[文档]</a> <span class="k">def</span> <span class="nf">set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key_or_attrs</span><span class="p">,</span> <span class="n">value</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">unset</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在当前对象此字段上赋值</span>
<span class="sd"> :param key_or_attrs: 字段名，或者一个包含 字段名 / 值的 dict</span>
<span class="sd"> :type key_or_attrs: string_types or dict</span>
<span class="sd"> :param value: 字段值</span>
<span class="sd"> :param unset:</span>
<span class="sd"> :return: 当前对象，供链式调用</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">key_or_attrs</span><span class="p">,</span> <span class="nb">dict</span><span class="p">)</span> <span class="ow">and</span> <span class="n">value</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">attrs</span> <span class="o">=</span> <span class="n">key_or_attrs</span>
<span class="n">keys</span> <span class="o">=</span> <span class="n">attrs</span><span class="o">.</span><span class="n">keys</span><span class="p">()</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">keys</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">attrs</span><span class="p">[</span><span class="n">k</span><span class="p">],</span> <span class="n">LocalProxy</span><span class="p">):</span>
<span class="n">attrs</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">attrs</span><span class="p">[</span><span class="n">k</span><span class="p">]</span><span class="o">.</span><span class="n">_get_current_object</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">key</span> <span class="o">=</span> <span class="n">key_or_attrs</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">LocalProxy</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">_get_current_object</span><span class="p">()</span>
<span class="n">attrs</span> <span class="o">=</span> <span class="p">{</span><span class="n">key</span><span class="p">:</span> <span class="n">utils</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">)}</span>
<span class="k">if</span> <span class="n">unset</span><span class="p">:</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">attrs</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
<span class="n">attrs</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">operation</span><span class="o">.</span><span class="n">Unset</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">validate</span><span class="p">(</span><span class="n">attrs</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_merge_metadata</span><span class="p">(</span><span class="n">attrs</span><span class="p">)</span>
<span class="n">keys</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">attrs</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">keys</span><span class="p">:</span>
<span class="n">v</span> <span class="o">=</span> <span class="n">attrs</span><span class="p">[</span><span class="n">k</span><span class="p">]</span>
<span class="c1"># TODO: Relation</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">BaseOp</span><span class="p">):</span>
<span class="n">v</span> <span class="o">=</span> <span class="n">operation</span><span class="o">.</span><span class="n">Set</span><span class="p">(</span><span class="n">v</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">v</span><span class="o">.</span><span class="n">_apply</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">k</span><span class="p">),</span> <span class="bp">self</span><span class="p">,</span> <span class="n">k</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">==</span> <span class="n">operation</span><span class="o">.</span><span class="n">_UNSET</span><span class="p">:</span>
<span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">[</span><span class="n">k</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_changes</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">v</span><span class="o">.</span><span class="n">_merge</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_changes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">k</span><span class="p">))</span>
<span class="k">return</span> <span class="bp">self</span></div>
<div class="viewcode-block" id="Object.unset"><a class="viewcode-back" href="../../index.html#leancloud.Object.unset">[文档]</a> <span class="k">def</span> <span class="nf">unset</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在对象上移除此字段。</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">unset</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.increment"><a class="viewcode-back" href="../../index.html#leancloud.Object.increment">[文档]</a> <span class="k">def</span> <span class="nf">increment</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">amount</span><span class="o">=</span><span class="mi">1</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在对象此字段上自增对应的数值，如果数值没有指定，默认为一。</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :param amount: 自增量</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">Increment</span><span class="p">(</span><span class="n">amount</span><span class="p">))</span></div>
<div class="viewcode-block" id="Object.add"><a class="viewcode-back" href="../../index.html#leancloud.Object.add">[文档]</a> <span class="k">def</span> <span class="nf">add</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">item</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在对象此字段对应的数组末尾添加指定对象。</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :param item: 要添加的对象</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">Add</span><span class="p">([</span><span class="n">item</span><span class="p">]))</span></div>
<div class="viewcode-block" id="Object.add_unique"><a class="viewcode-back" href="../../index.html#leancloud.Object.add_unique">[文档]</a> <span class="k">def</span> <span class="nf">add_unique</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">item</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在对象此字段对应的数组末尾添加指定对象，如果此对象并没有包含在字段中。</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :param item: 要添加的对象</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">AddUnique</span><span class="p">([</span><span class="n">item</span><span class="p">]))</span></div>
<div class="viewcode-block" id="Object.remove"><a class="viewcode-back" href="../../index.html#leancloud.Object.remove">[文档]</a> <span class="k">def</span> <span class="nf">remove</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">item</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 在对象此字段对应的数组中，将指定对象全部移除。</span>
<span class="sd"> :param attr: 字段名</span>
<span class="sd"> :param item: 要移除的对象</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">Remove</span><span class="p">([</span><span class="n">item</span><span class="p">]))</span></div>
<div class="viewcode-block" id="Object.bit_and"><a class="viewcode-back" href="../../index.html#leancloud.Object.bit_and">[文档]</a> <span class="k">def</span> <span class="nf">bit_and</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">BitAnd</span><span class="p">(</span><span class="n">value</span><span class="p">))</span></div>
<div class="viewcode-block" id="Object.bit_or"><a class="viewcode-back" href="../../index.html#leancloud.Object.bit_or">[文档]</a> <span class="k">def</span> <span class="nf">bit_or</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">BitOr</span><span class="p">(</span><span class="n">value</span><span class="p">))</span></div>
<div class="viewcode-block" id="Object.bit_xor"><a class="viewcode-back" href="../../index.html#leancloud.Object.bit_xor">[文档]</a> <span class="k">def</span> <span class="nf">bit_xor</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">attr</span><span class="p">,</span> <span class="n">operation</span><span class="o">.</span><span class="n">BitXor</span><span class="p">(</span><span class="n">value</span><span class="p">))</span></div>
<div class="viewcode-block" id="Object.clear"><a class="viewcode-back" href="../../index.html#leancloud.Object.clear">[文档]</a> <span class="k">def</span> <span class="nf">clear</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 将当前对象所有字段全部移除。</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">,</span> <span class="n">unset</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></div>
<span class="k">def</span> <span class="nf">_dump_save</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">data</span> <span class="o">=</span> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="n">v</span><span class="o">.</span><span class="n">dump</span><span class="p">()</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">six</span><span class="o">.</span><span class="n">iteritems</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_changes</span><span class="p">)}</span>
<span class="n">data</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_flags</span><span class="p">)</span>
<span class="k">return</span> <span class="n">data</span>
<div class="viewcode-block" id="Object.fetch"><a class="viewcode-back" href="../../index.html#leancloud.Object.fetch">[文档]</a> <span class="k">def</span> <span class="nf">fetch</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">select</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">include</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 从服务器获取当前对象所有的值，如果与本地值不同，将会覆盖本地的值。</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="n">data</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">if</span> <span class="n">select</span><span class="p">:</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="nb">tuple</span><span class="p">)):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"select parameter must be a list or a tuple"</span><span class="p">)</span>
<span class="n">data</span><span class="p">[</span><span class="s2">"keys"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">","</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">select</span><span class="p">)</span>
<span class="k">if</span> <span class="n">include</span><span class="p">:</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">include</span><span class="p">,</span> <span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="nb">tuple</span><span class="p">)):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"include parameter must be a list or a tuple"</span><span class="p">)</span>
<span class="n">data</span><span class="p">[</span><span class="s2">"include"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">","</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">include</span><span class="p">)</span>
<span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
<span class="s2">"/classes/</span><span class="si">{0}</span><span class="s2">/</span><span class="si">{1}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_class_name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">),</span> <span class="n">data</span>
<span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_update_data</span><span class="p">(</span><span class="n">response</span><span class="o">.</span><span class="n">json</span><span class="p">())</span></div>
<div class="viewcode-block" id="Object.is_new"><a class="viewcode-back" href="../../index.html#leancloud.Object.is_new">[文档]</a> <span class="k">def</span> <span class="nf">is_new</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 判断当前对象是否已经保存至服务器。</span>
<span class="sd"> 该方法为 SDK 内部使用（save 调用此方法 dispatch 保存操作为 REST API 的 POST 和 PUT 请求）。</span>
<span class="sd"> 查询对象是否在服务器上存在请使用 is_existed 方法。</span>
<span class="sd"> :rtype: bool</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="kc">False</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span> <span class="k">else</span> <span class="kc">True</span></div>
<div class="viewcode-block" id="Object.is_existed"><a class="viewcode-back" href="../../index.html#leancloud.Object.is_existed">[文档]</a> <span class="k">def</span> <span class="nf">is_existed</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 判断当前对象是否在服务器上已经存在。</span>
<span class="sd"> :rtype: bool</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">has</span><span class="p">(</span><span class="s2">"createdAt"</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.get_acl"><a class="viewcode-back" href="../../index.html#leancloud.Object.get_acl">[文档]</a> <span class="k">def</span> <span class="nf">get_acl</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 返回当前对象的 ACL。</span>
<span class="sd"> :return: 当前对象的 ACL</span>
<span class="sd"> :rtype: leancloud.ACL</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"ACL"</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.set_acl"><a class="viewcode-back" href="../../index.html#leancloud.Object.set_acl">[文档]</a> <span class="k">def</span> <span class="nf">set_acl</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">acl</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 为当前对象设置 ACL</span>
<span class="sd"> :type acl: leancloud.ACL</span>
<span class="sd"> :return: 当前对象</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"ACL"</span><span class="p">,</span> <span class="n">acl</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.disable_before_hook"><a class="viewcode-back" href="../../index.html#leancloud.Object.disable_before_hook">[文档]</a> <span class="k">def</span> <span class="nf">disable_before_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">hook_key</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">get_app_info</span><span class="p">()</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"hook_key"</span><span class="p">)</span>
<span class="n">master_key</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">get_app_info</span><span class="p">()</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"master_key"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">hook_key</span> <span class="ow">or</span> <span class="n">master_key</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ignore_hook</span><span class="p">(</span><span class="s2">"beforeSave"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ignore_hook</span><span class="p">(</span><span class="s2">"beforeUpdate"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ignore_hook</span><span class="p">(</span><span class="s2">"beforeDelete"</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"disable_before_hook needs master key or hook key"</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.disable_after_hook"><a class="viewcode-back" href="../../index.html#leancloud.Object.disable_after_hook">[文档]</a> <span class="k">def</span> <span class="nf">disable_after_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">hook_key</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">get_app_info</span><span class="p">()</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"hook_key"</span><span class="p">)</span>
<span class="n">master_key</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">get_app_info</span><span class="p">()</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"master_key"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">hook_key</span> <span class="ow">or</span> <span class="n">master_key</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ignore_hook</span><span class="p">(</span><span class="s2">"afterSave"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ignore_hook</span><span class="p">(</span><span class="s2">"afterUpdate"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ignore_hook</span><span class="p">(</span><span class="s2">"afterDelete"</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"disable_after_hook needs master key or hook key"</span><span class="p">)</span></div>
<div class="viewcode-block" id="Object.ignore_hook"><a class="viewcode-back" href="../../index.html#leancloud.Object.ignore_hook">[文档]</a> <span class="k">def</span> <span class="nf">ignore_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">hook_name</span><span class="p">):</span>
<span class="k">if</span> <span class="n">hook_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">{</span>
<span class="s2">"beforeSave"</span><span class="p">,</span>
<span class="s2">"afterSave"</span><span class="p">,</span>
<span class="s2">"beforeUpdate"</span><span class="p">,</span>
<span class="s2">"afterUpdate"</span><span class="p">,</span>
<span class="s2">"beforeDelete"</span><span class="p">,</span>
<span class="s2">"afterDelete"</span><span class="p">,</span>
<span class="p">}:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"invalid hook name: "</span> <span class="o">+</span> <span class="n">hook_name</span><span class="p">)</span>
<span class="k">if</span> <span class="s2">"__ignore_hooks"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_flags</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_flags</span><span class="p">[</span><span class="s2">"__ignore_hooks"</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_flags</span><span class="p">[</span><span class="s2">"__ignore_hooks"</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">hook_name</span><span class="p">)</span></div>
<span class="k">def</span> <span class="nf">_update_data</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">server_data</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_merge_metadata</span><span class="p">(</span><span class="n">server_data</span><span class="p">)</span>
<span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">six</span><span class="o">.</span><span class="n">iteritems</span><span class="p">(</span><span class="n">server_data</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_attributes</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">utils</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_changes</span> <span class="o">=</span> <span class="p">{}</span>
<div class="viewcode-block" id="Object.as_class"><a class="viewcode-back" href="../../index.html#leancloud.Object.as_class">[文档]</a> <span class="nd">@staticmethod</span>
<span class="k">def</span> <span class="nf">as_class</span><span class="p">(</span><span class="n">arg</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">inner_decorator</span><span class="p">(</span><span class="bp">cls</span><span class="p">):</span>
<span class="bp">cls</span><span class="o">.</span><span class="n">_class_name</span> <span class="o">=</span> <span class="n">arg</span>
<span class="k">return</span> <span class="bp">cls</span>
<span class="k">return</span> <span class="n">inner_decorator</span></div></div>
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