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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>class Rack::ShowStatus - rack-2.2.10 Documentation</title> <script type="text/javascript"> var rdoc_rel_prefix = "../"; var index_rel_prefix = "../"; </script> <script src="../js/navigation.js" defer></script> <script src="../js/search.js" defer></script> <script src="../js/search_index.js" defer></script> <script src="../js/searcher.js" defer></script> <script src="../js/darkfish.js" defer></script> <link href="../css/fonts.css" rel="stylesheet"> <link href="../css/rdoc.css" rel="stylesheet"> <body id="top" role="document" class="class"> <nav role="navigation"> <div id="project-navigation"> <div id="home-section" role="region" title="Quick navigation" class="nav-section"> <h2> <a href="../index.html" rel="home">Home</a> </h2> <div id="table-of-contents-navigation"> <a href="../table_of_contents.html#pages">Pages</a> <a href="../table_of_contents.html#classes">Classes</a> <a href="../table_of_contents.html#methods">Methods</a> </div> </div> <div id="search-section" role="search" class="project-section initially-hidden"> <form action="#" method="get" accept-charset="utf-8"> <div id="search-field-wrapper"> <input id="search-field" role="combobox" aria-label="Search" aria-autocomplete="list" aria-controls="search-results" type="text" name="search" placeholder="Search" spellcheck="false" title="Type to search, Up and Down to navigate, Enter to load"> </div> <ul id="search-results" aria-label="Search Results" aria-busy="false" aria-expanded="false" aria-atomic="false" class="initially-hidden"></ul> </form> </div> </div> <div id="class-metadata"> <div id="parent-class-section" class="nav-section"> <h3>Parent</h3> <p class="link">Object </div> <!-- Method Quickref --> <div id="method-list-section" class="nav-section"> <h3>Methods</h3> <ul class="link-list" role="directory"> <li ><a href="#method-c-new">::new</a> <li ><a href="#method-i-call">#call</a> </ul> </div> </div> </nav> <main role="main" aria-labelledby="class-Rack::ShowStatus"> <h1 id="class-Rack::ShowStatus" class="class"> class Rack::ShowStatus </h1> <section class="description"> <p><a href="ShowStatus.html"><code>Rack::ShowStatus</code></a> catches all empty responses and replaces them with a site explaining the error.</p> <p>Additional details can be put into <code>rack.showstatus.detail</code> and will be shown as HTML. If such details exist, the error page is always rendered, even if the reply was not empty.</p> </section> <section id="5Buntitled-5D" class="documentation-section"> <section id="public-class-5Buntitled-5D-method-details" class="method-section"> <header> <h3>Public Class Methods</h3> </header> <div id="method-c-new" class="method-detail "> <div class="method-heading"> <span class="method-name">new</span><span class="method-args">(app)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="new-source"> <pre><span class="ruby-comment"># File lib/rack/show_status.rb, line 14</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-ivar">@template</span> = <span class="ruby-constant">ERB</span>.<span class="ruby-identifier">new</span>(<span class="ruby-constant">TEMPLATE</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> </section> <section id="public-instance-5Buntitled-5D-method-details" class="method-section"> <header> <h3>Public Instance Methods</h3> </header> <div id="method-i-call" class="method-detail "> <div class="method-heading"> <span class="method-name">call</span><span class="method-args">(env)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="call-source"> <pre><span class="ruby-comment"># File lib/rack/show_status.rb, line 19</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">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-identifier">body</span> = <span class="ruby-ivar">@app</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>) <span class="ruby-identifier">headers</span> = <span class="ruby-constant">Utils</span><span class="ruby-operator">::</span><span class="ruby-constant">HeaderHash</span>[<span class="ruby-identifier">headers</span>] <span class="ruby-identifier">empty</span> = <span class="ruby-identifier">headers</span>[<span class="ruby-constant">CONTENT_LENGTH</span>].<span class="ruby-identifier">to_i</span> <span class="ruby-operator"><=</span> <span class="ruby-value">0</span> <span class="ruby-comment"># client or server error, or explicit message</span> <span class="ruby-keyword">if</span> (<span class="ruby-identifier">status</span>.<span class="ruby-identifier">to_i</span> <span class="ruby-operator">>=</span> <span class="ruby-value">400</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">empty</span>) <span class="ruby-operator">||</span> <span class="ruby-identifier">env</span>[<span class="ruby-constant">RACK_SHOWSTATUS_DETAIL</span>] <span class="ruby-comment"># This double assignment is to prevent an "unused variable" warning.</span> <span class="ruby-comment"># Yes, it is dumb, but I don't like Ruby yelling at me.</span> <span class="ruby-identifier">req</span> = <span class="ruby-identifier">req</span> = <span class="ruby-constant">Rack</span><span class="ruby-operator">::</span><span class="ruby-constant">Request</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">env</span>) <span class="ruby-identifier">message</span> = <span class="ruby-constant">Rack</span><span class="ruby-operator">::</span><span class="ruby-constant">Utils</span><span class="ruby-operator">::</span><span class="ruby-constant">HTTP_STATUS_CODES</span>[<span class="ruby-identifier">status</span>.<span class="ruby-identifier">to_i</span>] <span class="ruby-operator">||</span> <span class="ruby-identifier">status</span>.<span class="ruby-identifier">to_s</span> <span class="ruby-comment"># This double assignment is to prevent an "unused variable" warning.</span> <span class="ruby-comment"># Yes, it is dumb, but I don't like Ruby yelling at me.</span> <span class="ruby-identifier">detail</span> = <span class="ruby-identifier">detail</span> = <span class="ruby-identifier">env</span>[<span class="ruby-constant">RACK_SHOWSTATUS_DETAIL</span>] <span class="ruby-operator">||</span> <span class="ruby-identifier">message</span> <span class="ruby-identifier">body</span> = <span class="ruby-ivar">@template</span>.<span class="ruby-identifier">result</span>(<span class="ruby-identifier">binding</span>) <span class="ruby-identifier">size</span> = <span class="ruby-identifier">body</span>.<span class="ruby-identifier">bytesize</span> [<span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>.<span class="ruby-identifier">merge</span>(<span class="ruby-constant">CONTENT_TYPE</span> <span class="ruby-operator">=></span> <span class="ruby-string">"text/html"</span>, <span class="ruby-constant">CONTENT_LENGTH</span> <span class="ruby-operator">=></span> <span class="ruby-identifier">size</span>.<span class="ruby-identifier">to_s</span>), [<span class="ruby-identifier">body</span>]] <span class="ruby-keyword">else</span> [<span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-identifier">body</span>] <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> </section> </section> </main> <footer id="validator-badges" role="contentinfo"> <p><a href="https://validator.w3.org/check/referer">Validate</a> <p>Generated by <a href="https://ruby.github.io/rdoc/">RDoc</a> 6.2.1.1. <p>Based on <a href="http://deveiate.org/projects/Darkfish-RDoc/">Darkfish</a> by <a href="http://deveiate.org">Michael Granger</a>. </footer>