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<li><a href="#plugin-example">Plugin Example</a></li>
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<div class="col-sm-9 doc-styling">
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<h1><i class="glyphicon glyphicon-info-sign"></i> <code class="obj">jinja_env</code></h1>
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<ul class=page-meta>
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<li>Property of <a href="../">Environment</a></li>
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</ul>
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<p>This object is a configured Jinja2 environment. For more information you can
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refer to the <a href="https://jinja.palletsprojects.com/en/3.0.x/api/#jinja2.Environment" class="ext">Jinja 2 Documentation</a>.</p>
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<p>This is where plugins can inject additional data like custom filters, tests
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or global functions.</p>
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<h2 id="plugin-example">Plugin Example</h2><div class="hll"><pre><span></span><span class="kn">from</span> <span class="nn">lektor.pluginsystem</span> <span class="kn">import</span> <span class="n">Plugin</span>
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<span class="k">class</span> <span class="nc">MyPlugin</span><span class="p">(</span><span class="n">Plugin</span><span class="p">):</span>
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<span class="o">...</span>
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<span class="k">def</span> <span class="nf">on_setup_env</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">):</span>
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<span class="k">def</span> <span class="nf">shout_filter</span><span class="p">(</span><span class="n">value</span><span class="p">):</span>
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<span class="k">return</span> <span class="n">unicode</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span> <span class="o">+</span> <span class="s1">'!!!!1111'</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">env</span><span class="o">.</span><span class="n">jinja_env</span><span class="o">.</span><span class="n">filters</span><span class="p">[</span><span class="s1">'shout'</span><span class="p">]</span> <span class="o">=</span> <span class="n">shout_filter</span>
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</pre></div>
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<p>Then you can use this filter from templates:</p>
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<div class="hll"><pre><span></span><span class="p"><</span><span class="nt">h1</span><span class="p">></span><span class="cp">{{</span> <span class="nv">page.title</span><span class="o">|</span><span class="nf">shout</span> <span class="cp">}}</span><span class="p"></</span><span class="nt">h1</span><span class="p">></span>
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</pre></div>
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