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<h1>
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<span translate="no">Plausible.Stats.Filters</span>
<small class="app-vsn" translate="no">(Plausible v0.0.1)</small>
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<section id="moduledoc">
<p>A module for parsing filters used in stat queries.</p>
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<a href="#dimensions_used_in_filters/2" translate="no">dimensions_used_in_filters(filters, opts \\ [])</a>
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<a href="#filtering_on_dimension?/2" translate="no">filtering_on_dimension?(query, dimension)</a>
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<a href="#get_toplevel_filter/2" translate="no">get_toplevel_filter(query, prefix)</a>
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<div class="summary-synopsis"><p>Gets the first top level filter with matching dimension (or nil).</p></div>
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<a href="#parse/1" translate="no">parse(filters)</a>
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<div class="summary-synopsis"><p>Parses different filter formats.</p></div>
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<a href="#rename_dimensions_used_in_filter/2" translate="no">rename_dimensions_used_in_filter(filters, renames)</a>
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<a href="#transform_filters/2" translate="no">transform_filters(filters, transformer)</a>
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<div class="summary-synopsis"><p>Updates filters via <code class="inline">transformer</code>.</p></div>
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<a href="#without_prefix/1" translate="no">without_prefix(dimension)</a>
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<h1 class="signature" translate="no">dimensions_used_in_filters(filters, opts \\ [])</h1>
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<h1 class="signature" translate="no">filtering_on_dimension?(query, dimension)</h1>
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<h1 class="signature" translate="no">get_toplevel_filter(query, prefix)</h1>
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<section class="docstring">
<p>Gets the first top level filter with matching dimension (or nil).</p><p>Only use in cases where it's known that filters are only set on the top level as it
does not handle AND/OR/NOT!</p>
</section>
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<h1 class="signature" translate="no">parse(filters)</h1>
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<p>Parses different filter formats.</p><p>Depending on the format and type of the <code class="inline">filters</code> argument, returns:</p><ul><li>a decoded list, when <code class="inline">filters</code> is encoded JSON</li><li>a parsed filter list, when <code class="inline">filters</code> is a filter expression string</li><li>the same list, when <code class="inline">filters</code> is a map</li></ul><p>Returns an empty list when argument type is unexpected (e.g. <code class="inline">nil</code>).</p><h3 id="parse/1-examples" class="section-heading">
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<span class="text">Examples:</span>
</h3>
<pre><code class="makeup elixir" translate="no"><span class="gp unselectable">iex&gt; </span><span class="nc">Filters</span><span class="o">.</span><span class="n">parse</span><span class="p" data-group-id="0456379068-1">(</span><span class="s">&quot;{</span><span class="se">\&quot;</span><span class="s">page</span><span class="se">\&quot;</span><span class="s">:</span><span class="se">\&quot;</span><span class="s">/blog/**</span><span class="se">\&quot;</span><span class="s">}&quot;</span><span class="p" data-group-id="0456379068-1">)</span><span class="w">
</span><span class="p" data-group-id="0456379068-2">[</span><span class="p" data-group-id="0456379068-3">[</span><span class="ss">:matches_wildcard</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;event:page&quot;</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="0456379068-4">[</span><span class="s">&quot;/blog/**&quot;</span><span class="p" data-group-id="0456379068-4">]</span><span class="p" data-group-id="0456379068-3">]</span><span class="p" data-group-id="0456379068-2">]</span><span class="w">
</span><span class="gp unselectable">iex&gt; </span><span class="nc">Filters</span><span class="o">.</span><span class="n">parse</span><span class="p" data-group-id="0456379068-5">(</span><span class="s">&quot;visit:browser!=Chrome&quot;</span><span class="p" data-group-id="0456379068-5">)</span><span class="w">
</span><span class="p" data-group-id="0456379068-6">[</span><span class="p" data-group-id="0456379068-7">[</span><span class="ss">:is_not</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;visit:browser&quot;</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="0456379068-8">[</span><span class="s">&quot;Chrome&quot;</span><span class="p" data-group-id="0456379068-8">]</span><span class="p" data-group-id="0456379068-7">]</span><span class="p" data-group-id="0456379068-6">]</span><span class="w">
</span><span class="gp unselectable">iex&gt; </span><span class="nc">Filters</span><span class="o">.</span><span class="n">parse</span><span class="p" data-group-id="0456379068-9">(</span><span class="no">nil</span><span class="p" data-group-id="0456379068-9">)</span><span class="w">
</span><span class="p" data-group-id="0456379068-10">[</span><span class="p" data-group-id="0456379068-10">]</span></code></pre>
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<h1 class="signature" translate="no">rename_dimensions_used_in_filter(filters, renames)</h1>
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<h1 class="signature" translate="no">transform_filters(filters, transformer)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/filters/filters.ex#L138" class="icon-action" rel="help" title="View Source">
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<section class="docstring">
<p>Updates filters via <code class="inline">transformer</code>.</p><p>Transformer will receive each node (filter, and/or/not subtree) of
query and must return a list of nodes to replace it with or nil
to ignore and look deeper.</p>
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