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<h1>Source code for evennia.server.models</h1><div class="highlight"><pre>
<span></span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">Server Configuration flags</span>
<span class="sd">This holds persistent server configuration flags.</span>
<span class="sd">Config values should usually be set through the</span>
<span class="sd">manager&#39;s conf() method.</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">django.db</span> <span class="kn">import</span> <span class="n">models</span>
<span class="kn">from</span> <span class="nn">evennia.utils.idmapper.models</span> <span class="kn">import</span> <span class="n">WeakSharedMemoryModel</span>
<span class="kn">from</span> <span class="nn">evennia.utils</span> <span class="kn">import</span> <span class="n">logger</span><span class="p">,</span> <span class="n">utils</span>
<span class="kn">from</span> <span class="nn">evennia.utils.dbserialize</span> <span class="kn">import</span> <span class="n">to_pickle</span><span class="p">,</span> <span class="n">from_pickle</span>
<span class="kn">from</span> <span class="nn">evennia.server.manager</span> <span class="kn">import</span> <span class="n">ServerConfigManager</span>
<span class="kn">from</span> <span class="nn">evennia.utils</span> <span class="kn">import</span> <span class="n">picklefield</span>
<span class="c1"># ------------------------------------------------------------</span>
<span class="c1">#</span>
<span class="c1"># ServerConfig</span>
<span class="c1">#</span>
<span class="c1"># ------------------------------------------------------------</span>
<div class="viewcode-block" id="ServerConfig"><a class="viewcode-back" href="../../../api/evennia.server.models.html#evennia.server.models.ServerConfig">[docs]</a><span class="k">class</span> <span class="nc">ServerConfig</span><span class="p">(</span><span class="n">WeakSharedMemoryModel</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> On-the fly storage of global settings.</span>
<span class="sd"> Properties defined on ServerConfig:</span>
<span class="sd"> - key: Main identifier</span>
<span class="sd"> - value: Value stored in key. This is a pickled storage.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="c1">#</span>
<span class="c1"># ServerConfig database model setup</span>
<span class="c1">#</span>
<span class="c1">#</span>
<span class="c1"># These database fields are all set using their corresponding properties,</span>
<span class="c1"># named same as the field, but without the db_* prefix.</span>
<span class="c1"># main name of the database entry</span>
<span class="n">db_key</span> <span class="o">=</span> <span class="n">models</span><span class="o">.</span><span class="n">CharField</span><span class="p">(</span><span class="n">max_length</span><span class="o">=</span><span class="mi">64</span><span class="p">,</span> <span class="n">unique</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="c1"># config value</span>
<span class="c1"># db_value = models.BinaryField(blank=True)</span>
<span class="n">db_value</span> <span class="o">=</span> <span class="n">picklefield</span><span class="o">.</span><span class="n">PickledObjectField</span><span class="p">(</span>
<span class="s2">&quot;value&quot;</span><span class="p">,</span>
<span class="n">null</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span>
<span class="n">help_text</span><span class="o">=</span><span class="s2">&quot;The data returned when the config value is accessed. Must be &quot;</span>
<span class="s2">&quot;written as a Python literal if editing through the admin &quot;</span>
<span class="s2">&quot;interface. Attribute values which are not Python literals &quot;</span>
<span class="s2">&quot;cannot be edited through the admin interface.&quot;</span><span class="p">,</span>
<span class="p">)</span>
<span class="n">objects</span> <span class="o">=</span> <span class="n">ServerConfigManager</span><span class="p">()</span>
<span class="n">_is_deleted</span> <span class="o">=</span> <span class="kc">False</span>
<span class="c1"># Wrapper properties to easily set database fields. These are</span>
<span class="c1"># @property decorators that allows to access these fields using</span>
<span class="c1"># normal python operations (without having to remember to save()</span>
<span class="c1"># etc). So e.g. a property &#39;attr&#39; has a get/set/del decorator</span>
<span class="c1"># defined that allows the user to do self.attr = value,</span>
<span class="c1"># value = self.attr and del self.attr respectively (where self</span>
<span class="c1"># is the object in question).</span>
<span class="c1"># key property (wraps db_key)</span>
<span class="c1"># @property</span>
<span class="k">def</span> <span class="nf">__key_get</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="s2">&quot;Getter. Allows for value = self.key&quot;</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">db_key</span>
<span class="c1"># @key.setter</span>
<span class="k">def</span> <span class="nf">__key_set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="s2">&quot;Setter. Allows for self.key = value&quot;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">db_key</span> <span class="o">=</span> <span class="n">value</span>
<span class="bp">self</span><span class="o">.</span><span class="n">save</span><span class="p">()</span>
<span class="c1"># @key.deleter</span>
<span class="k">def</span> <span class="nf">__key_del</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="s2">&quot;Deleter. Allows for del self.key. Deletes entry.&quot;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">delete</span><span class="p">()</span>
<span class="n">key</span> <span class="o">=</span> <span class="nb">property</span><span class="p">(</span><span class="n">__key_get</span><span class="p">,</span> <span class="n">__key_set</span><span class="p">,</span> <span class="n">__key_del</span><span class="p">)</span>
<span class="c1"># value property (wraps db_value)</span>
<span class="c1"># @property</span>
<span class="k">def</span> <span class="nf">__value_get</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="s2">&quot;Getter. Allows for value = self.value&quot;</span>
<span class="k">return</span> <span class="n">from_pickle</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">db_value</span><span class="p">,</span> <span class="n">db_obj</span><span class="o">=</span><span class="bp">self</span><span class="p">)</span>
<span class="c1"># @value.setter</span>
<span class="k">def</span> <span class="nf">__value_set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="s2">&quot;Setter. Allows for self.value = value&quot;</span>
<span class="k">if</span> <span class="n">utils</span><span class="o">.</span><span class="n">has_parent</span><span class="p">(</span><span class="s2">&quot;django.db.models.base.Model&quot;</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="c1"># we have to protect against storing db objects.</span>
<span class="n">logger</span><span class="o">.</span><span class="n">log_err</span><span class="p">(</span><span class="s2">&quot;ServerConfig cannot store db objects! (</span><span class="si">%s</span><span class="s2">)&quot;</span> <span class="o">%</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">db_value</span> <span class="o">=</span> <span class="n">to_pickle</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">save</span><span class="p">()</span>
<span class="c1"># @value.deleter</span>
<span class="k">def</span> <span class="nf">__value_del</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="s2">&quot;Deleter. Allows for del self.value. Deletes entry.&quot;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">delete</span><span class="p">()</span>
<span class="n">value</span> <span class="o">=</span> <span class="nb">property</span><span class="p">(</span><span class="n">__value_get</span><span class="p">,</span> <span class="n">__value_set</span><span class="p">,</span> <span class="n">__value_del</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">Meta</span><span class="p">:</span>
<span class="s2">&quot;Define Django meta options&quot;</span>
<span class="n">verbose_name</span> <span class="o">=</span> <span class="s2">&quot;Server Config value&quot;</span>
<span class="n">verbose_name_plural</span> <span class="o">=</span> <span class="s2">&quot;Server Config values&quot;</span>
<span class="c1">#</span>
<span class="c1"># ServerConfig other methods</span>
<span class="c1">#</span>
<span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="s2">&quot;&lt;</span><span class="si">{}</span><span class="s2"> </span><span class="si">{}</span><span class="s2">&gt;&quot;</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="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">key</span><span class="p">)</span>
<div class="viewcode-block" id="ServerConfig.store"><a class="viewcode-back" href="../../../api/evennia.server.models.html#evennia.server.models.ServerConfig.store">[docs]</a> <span class="k">def</span> <span class="nf">store</span><span class="p">(</span><span class="bp">self</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="sd">&quot;&quot;&quot;</span>
<span class="sd"> Wrap the storage.</span>
<span class="sd"> Args:</span>
<span class="sd"> key (str): The name of this store.</span>
<span class="sd"> value (str): The data to store with this `key`.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">key</span>
<span class="bp">self</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="n">value</span></div></div>
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