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<title>class Rack::Recursive - rack-2.2.10 Documentation</title>

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  <h1 id="class-Rack::Recursive" class="class">
    class Rack::Recursive
  </h1>

<section class="description">
    
<p><a href="Recursive.html"><code>Rack::Recursive</code></a> allows applications called down the chain to include data from other applications (by using <code>rack['rack.recursive.include'][...]</code> or raise a <a href="ForwardRequest.html"><code>ForwardRequest</code></a> to redirect internally.</p>

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         <h3>Public Class Methods</h3>
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          <span class="method-name">new</span><span
            class="method-args">(app)</span>
          
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            <pre><span class="ruby-comment"># File lib/rack/recursive.rb, line 35</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">app</span>)
  <span class="ruby-ivar">@app</span> = <span class="ruby-identifier">app</span>
<span class="ruby-keyword">end</span></pre>
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          <span class="method-name">_call</span><span
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            <pre><span class="ruby-comment"># File lib/rack/recursive.rb, line 43</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">_call</span>(<span class="ruby-identifier">env</span>)
  <span class="ruby-ivar">@script_name</span> = <span class="ruby-identifier">env</span>[<span class="ruby-constant">SCRIPT_NAME</span>]
  <span class="ruby-ivar">@app</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>.<span class="ruby-identifier">merge</span>(<span class="ruby-constant">RACK_RECURSIVE_INCLUDE</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">method</span>(<span class="ruby-value">:include</span>)))
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">ForwardRequest</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">req</span>
  <span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>.<span class="ruby-identifier">merge</span>(<span class="ruby-identifier">req</span>.<span class="ruby-identifier">env</span>))
<span class="ruby-keyword">end</span></pre>
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          <span class="method-name">call</span><span
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            <pre><span class="ruby-comment"># File lib/rack/recursive.rb, line 39</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">call</span>(<span class="ruby-identifier">env</span>)
  <span class="ruby-identifier">dup</span>.<span class="ruby-identifier">_call</span>(<span class="ruby-identifier">env</span>)
<span class="ruby-keyword">end</span></pre>
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<div id="method-i-include" class="method-detail ">
        
        <div class="method-heading">
          <span class="method-name">include</span><span
            class="method-args">(env, path)</span>
          
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<div class="method-source-code" id="include-source">
            <pre><span class="ruby-comment"># File lib/rack/recursive.rb, line 50</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">include</span>(<span class="ruby-identifier">env</span>, <span class="ruby-identifier">path</span>)
  <span class="ruby-keyword">unless</span> <span class="ruby-identifier">path</span>.<span class="ruby-identifier">index</span>(<span class="ruby-ivar">@script_name</span>) <span class="ruby-operator">==</span> <span class="ruby-value">0</span> <span class="ruby-operator">&amp;&amp;</span> (<span class="ruby-identifier">path</span>[<span class="ruby-ivar">@script_name</span>.<span class="ruby-identifier">size</span>] <span class="ruby-operator">==</span> <span class="ruby-value">?/</span> <span class="ruby-operator">||</span>
                                           <span class="ruby-identifier">path</span>[<span class="ruby-ivar">@script_name</span>.<span class="ruby-identifier">size</span>].<span class="ruby-identifier">nil?</span>)
    <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">&quot;can only include below #{@script_name}, not #{path}&quot;</span>
  <span class="ruby-keyword">end</span>

<span class="ruby-identifier">env</span> = <span class="ruby-identifier">env</span>.<span class="ruby-identifier">merge</span>(<span class="ruby-constant">PATH_INFO</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">path</span>,
                  <span class="ruby-constant">SCRIPT_NAME</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-ivar">@script_name</span>,
                  <span class="ruby-constant">REQUEST_METHOD</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-constant">GET</span>,
                  <span class="ruby-string">&quot;CONTENT_LENGTH&quot;</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-string">&quot;0&quot;</span>, <span class="ruby-string">&quot;CONTENT_TYPE&quot;</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-string">&quot;&quot;</span>,
                  <span class="ruby-constant">RACK_INPUT</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-constant">StringIO</span>.<span class="ruby-identifier">new</span>(<span class="ruby-string">&quot;&quot;</span>))
  <span class="ruby-ivar">@app</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
<span class="ruby-keyword">end</span></pre>
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