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<h1>Source code for django.views.generic.detail</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span><span class="w"> </span><span class="nn">django.core.exceptions</span><span class="w"> </span><span class="kn">import</span> <span class="n">ImproperlyConfigured</span>
<span class="kn">from</span><span class="w"> </span><span class="nn">django.db</span><span class="w"> </span><span class="kn">import</span> <span class="n">models</span>
<span class="kn">from</span><span class="w"> </span><span class="nn">django.http</span><span class="w"> </span><span class="kn">import</span> <span class="n">Http404</span>
<span class="kn">from</span><span class="w"> </span><span class="nn">django.utils.translation</span><span class="w"> </span><span class="kn">import</span> <span class="n">gettext</span> <span class="k">as</span> <span class="n">_</span>
<span class="kn">from</span><span class="w"> </span><span class="nn">django.views.generic.base</span><span class="w"> </span><span class="kn">import</span> <span class="n">ContextMixin</span><span class="p">,</span> <span class="n">TemplateResponseMixin</span><span class="p">,</span> <span class="n">View</span>
<span class="k">class</span><span class="w"> </span><span class="nc">SingleObjectMixin</span><span class="p">(</span><span class="n">ContextMixin</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Provide the ability to retrieve a single object for further manipulation.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">model</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">queryset</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">slug_field</span> <span class="o">=</span> <span class="s2">&quot;slug&quot;</span>
<span class="n">context_object_name</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">slug_url_kwarg</span> <span class="o">=</span> <span class="s2">&quot;slug&quot;</span>
<span class="n">pk_url_kwarg</span> <span class="o">=</span> <span class="s2">&quot;pk&quot;</span>
<span class="n">query_pk_and_slug</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span><span class="w"> </span><span class="nf">get_object</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">queryset</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Return the object the view is displaying.</span>
<span class="sd"> Require `self.queryset` and a `pk` or `slug` argument in the URLconf.</span>
<span class="sd"> Subclasses can override this to return any object.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="c1"># Use a custom queryset if provided; this is required for subclasses</span>
<span class="c1"># like DateDetailView</span>
<span class="k">if</span> <span class="n">queryset</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">queryset</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_queryset</span><span class="p">()</span>
<span class="c1"># Next, try looking up by primary key.</span>
<span class="n">pk</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pk_url_kwarg</span><span class="p">)</span>
<span class="n">slug</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">slug_url_kwarg</span><span class="p">)</span>
<span class="k">if</span> <span class="n">pk</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">queryset</span> <span class="o">=</span> <span class="n">queryset</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">pk</span><span class="o">=</span><span class="n">pk</span><span class="p">)</span>
<span class="c1"># Next, try looking up by slug.</span>
<span class="k">if</span> <span class="n">slug</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="p">(</span><span class="n">pk</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">query_pk_and_slug</span><span class="p">):</span>
<span class="n">slug_field</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_slug_field</span><span class="p">()</span>
<span class="n">queryset</span> <span class="o">=</span> <span class="n">queryset</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="o">**</span><span class="p">{</span><span class="n">slug_field</span><span class="p">:</span> <span class="n">slug</span><span class="p">})</span>
<span class="c1"># If none of those are defined, it&#39;s an error.</span>
<span class="k">if</span> <span class="n">pk</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">and</span> <span class="n">slug</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">AttributeError</span><span class="p">(</span>
<span class="s2">&quot;Generic detail view </span><span class="si">%s</span><span class="s2"> must be called with either an object &quot;</span>
<span class="s2">&quot;pk or a slug in the URLconf.&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span>
<span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="c1"># Get the single item from the filtered queryset</span>
<span class="n">obj</span> <span class="o">=</span> <span class="n">queryset</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="k">except</span> <span class="n">queryset</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">DoesNotExist</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">Http404</span><span class="p">(</span>
<span class="n">_</span><span class="p">(</span><span class="s2">&quot;No </span><span class="si">%(verbose_name)s</span><span class="s2"> found matching the query&quot;</span><span class="p">)</span>
<span class="o">%</span> <span class="p">{</span><span class="s2">&quot;verbose_name&quot;</span><span class="p">:</span> <span class="n">queryset</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">_meta</span><span class="o">.</span><span class="n">verbose_name</span><span class="p">}</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">obj</span>
<span class="k">def</span><span class="w"> </span><span class="nf">get_queryset</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Return the `QuerySet` that will be used to look up the object.</span>
<span class="sd"> This method is called by the default implementation of get_object() and</span>
<span class="sd"> may not be called if get_object() is overridden.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">queryset</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">_default_manager</span><span class="o">.</span><span class="n">all</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">ImproperlyConfigured</span><span class="p">(</span>
<span class="s2">&quot;</span><span class="si">%(cls)s</span><span class="s2"> is missing a QuerySet. Define &quot;</span>
<span class="s2">&quot;</span><span class="si">%(cls)s</span><span class="s2">.model, </span><span class="si">%(cls)s</span><span class="s2">.queryset, or override &quot;</span>
<span class="s2">&quot;</span><span class="si">%(cls)s</span><span class="s2">.get_queryset().&quot;</span> <span class="o">%</span> <span class="p">{</span><span class="s2">&quot;cls&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span><span class="p">}</span>
<span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">queryset</span><span class="o">.</span><span class="n">all</span><span class="p">()</span>
<span class="k">def</span><span class="w"> </span><span class="nf">get_slug_field</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Get the name of a slug field to be used to look up by slug.&quot;&quot;&quot;</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">slug_field</span>
<span class="k">def</span><span class="w"> </span><span class="nf">get_context_object_name</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">obj</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Get the name to use for the object.&quot;&quot;&quot;</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">context_object_name</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">context_object_name</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">models</span><span class="o">.</span><span class="n">Model</span><span class="p">):</span>
<span class="k">return</span> <span class="n">obj</span><span class="o">.</span><span class="n">_meta</span><span class="o">.</span><span class="n">model_name</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">def</span><span class="w"> </span><span class="nf">get_context_data</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Insert the single object into the context dict.&quot;&quot;&quot;</span>
<span class="n">context</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">object</span><span class="p">:</span>
<span class="n">context</span><span class="p">[</span><span class="s2">&quot;object&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">object</span>
<span class="n">context_object_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_context_object_name</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">object</span><span class="p">)</span>
<span class="k">if</span> <span class="n">context_object_name</span><span class="p">:</span>
<span class="n">context</span><span class="p">[</span><span class="n">context_object_name</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">object</span>
<span class="n">context</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">kwargs</span><span class="p">)</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">get_context_data</span><span class="p">(</span><span class="o">**</span><span class="n">context</span><span class="p">)</span>
<span class="k">class</span><span class="w"> </span><span class="nc">BaseDetailView</span><span class="p">(</span><span class="n">SingleObjectMixin</span><span class="p">,</span> <span class="n">View</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;A base view for displaying a single object.&quot;&quot;&quot;</span>
<span class="k">def</span><span class="w"> </span><span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">object</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_object</span><span class="p">()</span>
<span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_context_data</span><span class="p">(</span><span class="nb">object</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">object</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">render_to_response</span><span class="p">(</span><span class="n">context</span><span class="p">)</span>
<span class="k">class</span><span class="w"> </span><span class="nc">SingleObjectTemplateResponseMixin</span><span class="p">(</span><span class="n">TemplateResponseMixin</span><span class="p">):</span>
<span class="n">template_name_field</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">template_name_suffix</span> <span class="o">=</span> <span class="s2">&quot;_detail&quot;</span>
<span class="k">def</span><span class="w"> </span><span class="nf">get_template_names</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Return a list of template names to be used for the request. May not be</span>
<span class="sd"> called if render_to_response() is overridden. Return the following list:</span>
<span class="sd"> * the value of ``template_name`` on the view (if provided)</span>
<span class="sd"> * the contents of the ``template_name_field`` field on the</span>
<span class="sd"> object instance that the view is operating upon (if available)</span>
<span class="sd"> * ``&lt;app_label&gt;/&lt;model_name&gt;&lt;template_name_suffix&gt;.html``</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">names</span> <span class="o">=</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">get_template_names</span><span class="p">()</span>
<span class="k">except</span> <span class="n">ImproperlyConfigured</span><span class="p">:</span>
<span class="c1"># If template_name isn&#39;t specified, it&#39;s not a problem --</span>
<span class="c1"># we just start with an empty list.</span>
<span class="n">names</span> <span class="o">=</span> <span class="p">[]</span>
<span class="c1"># If self.template_name_field is set, grab the value of the field</span>
<span class="c1"># of that name from the object; this is the most specific template</span>
<span class="c1"># name, if given.</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">object</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_name_field</span><span class="p">:</span>
<span class="n">name</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">object</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_name_field</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">name</span><span class="p">:</span>
<span class="n">names</span><span class="o">.</span><span class="n">insert</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>
<span class="c1"># The least-specific option is the default &lt;app&gt;/&lt;model&gt;_detail.html;</span>
<span class="c1"># only use this if the object in question is a model.</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">object</span><span class="p">,</span> <span class="n">models</span><span class="o">.</span><span class="n">Model</span><span class="p">):</span>
<span class="n">object_meta</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">object</span><span class="o">.</span><span class="n">_meta</span>
<span class="n">names</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="s2">&quot;</span><span class="si">%s</span><span class="s2">/</span><span class="si">%s%s</span><span class="s2">.html&quot;</span>
<span class="o">%</span> <span class="p">(</span>
<span class="n">object_meta</span><span class="o">.</span><span class="n">app_label</span><span class="p">,</span>
<span class="n">object_meta</span><span class="o">.</span><span class="n">model_name</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">template_name_suffix</span><span class="p">,</span>
<span class="p">)</span>
<span class="p">)</span>
<span class="k">elif</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s2">&quot;model&quot;</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="nb">issubclass</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="p">,</span> <span class="n">models</span><span class="o">.</span><span class="n">Model</span>
<span class="p">):</span>
<span class="n">names</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="s2">&quot;</span><span class="si">%s</span><span class="s2">/</span><span class="si">%s%s</span><span class="s2">.html&quot;</span>
<span class="o">%</span> <span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">_meta</span><span class="o">.</span><span class="n">app_label</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">_meta</span><span class="o">.</span><span class="n">model_name</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">template_name_suffix</span><span class="p">,</span>
<span class="p">)</span>
<span class="p">)</span>
<span class="c1"># If we still haven&#39;t managed to find any template names, we should</span>
<span class="c1"># re-raise the ImproperlyConfigured to alert the user.</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">names</span><span class="p">:</span>
<span class="k">raise</span>
<span class="k">return</span> <span class="n">names</span>
<div class="viewcode-block" id="DetailView">
<a class="viewcode-back" href="../../../../api/evennia.web.website.views.mixins.html#evennia.web.website.views.help.DetailView">[docs]</a>
<span class="k">class</span><span class="w"> </span><span class="nc">DetailView</span><span class="p">(</span><span class="n">SingleObjectTemplateResponseMixin</span><span class="p">,</span> <span class="n">BaseDetailView</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Render a &quot;detail&quot; view of an object.</span>
<span class="sd"> By default this is a model instance looked up from `self.queryset`, but the</span>
<span class="sd"> view will support display of *any* object by overriding `self.get_object()`.</span>
<span class="sd"> &quot;&quot;&quot;</span></div>
</pre></div>
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