<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1"> <title><%= yield(:page_title) || 'Ruby on Rails Guides' %></title> <link rel="stylesheet" type="text/css" href="stylesheets/style.css" /> <link rel="stylesheet" type="text/css" href="stylesheets/print.css" media="print" /> <link rel="stylesheet" type="text/css" href="stylesheets/syntaxhighlighter/shCore.css" /> <link rel="stylesheet" type="text/css" href="stylesheets/syntaxhighlighter/shThemeRailsGuides.css" /> <link rel="stylesheet" type="text/css" href="stylesheets/fixes.css" /> <link href="images/favicon.ico" rel="shortcut icon" type="image/x-icon" /> </head> <body class="guide"> <% if @edge %> <div> <img src="images/edge_badge.png" alt="edge-badge" id="edge-badge" /> </div> <% end %> <div id="topNav"> <div class="wrapper"> <strong class="more-info-label">More at <a href="http://rubyonrails.org/">rubyonrails.org:</a> </strong> <span class="red-button more-info-button"> More Ruby on Rails </span> <ul class="more-info-links s-hidden"> <li class="more-info"><a href="http://rubyonrails.org/">Overview</a></li> <li class="more-info"><a href="http://rubyonrails.org/download">Download</a></li> <li class="more-info"><a href="http://rubyonrails.org/deploy">Deploy</a></li> <li class="more-info"><a href="https://github.com/rails/rails">Code</a></li> <li class="more-info"><a href="http://rubyonrails.org/screencasts">Screencasts</a></li> <li class="more-info"><a href="http://rubyonrails.org/documentation">Documentation</a></li> <li class="more-info"><a href="http://rubyonrails.org/ecosystem">Ecosystem</a></li> <li class="more-info"><a href="http://rubyonrails.org/community">Community</a></li> <li class="more-info"><a href="http://weblog.rubyonrails.org/">Blog</a></li> </ul> </div> </div> <div id="header"> <div class="wrapper clearfix"> <h1><a href="index.html" title="Return to home page">Guides.rubyonrails.org</a></h1> <ul class="nav"> <li><a class="nav-item" href="index.html">Home</a></li> <li class="guides-index guides-index-large"> <a href="index.html" onclick="guideMenu(); return false;" id="guidesMenu" class="guides-index-item nav-item">Guides Index</a> <div id="guides" class="clearfix" style="display: none;"> <hr /> <% ['L', 'R'].each do |position| %> <dl class="<%= position %>"> <% docs_for_menu(position).each do |section| %> <dt><%= section['name'] %></dt> <% finished_documents(section['documents']).each do |document| %> <dd><a href="<%= document['url'] %>"><%= document['name'] %></a></dd> <% end %> <% end %> </dl> <% end %> </div> </li> <li><a class="nav-item" href="contributing_to_ruby_on_rails.html">Contribute</a></li> <li><a class="nav-item" href="credits.html">Credits</a></li> <li class="guides-index guides-index-small"> <select class="guides-index-item nav-item"> <option value="index.html">Guides Index</option> <% docs_for_menu.each do |section| %> <optgroup label="<%= section['name'] %>"> <% finished_documents(section['documents']).each do |document| %> <option value="<%= document['url'] %>"><%= document['name'] %></option> <% end %> </optgroup> <% end %> </select> </li> </ul> </div> </div> </div> <hr class="hide" /> <div id="feature"> <div class="wrapper"> <%= yield :header_section %> <%= yield :index_section %> </div> </div> <div id="container"> <div class="wrapper"> <div id="mainCol"> <%= yield.html_safe %> <h3>Feedback</h3> <p> You're encouraged to help improve the quality of this guide. </p> <p> If you see any typos or factual errors you are confident to patch, please clone <%= link_to 'docrails', 'https://github.com/lifo/docrails' %> and push the change yourself. That branch of Rails has public write access. Commits are still reviewed, but that happens after you've submitted your contribution. <%= link_to 'docrails', 'https://github.com/lifo/docrails' %> is cross-merged with master periodically. </p> <p> You may also find incomplete content, or stuff that is not up to date. Please do add any missing documentation for master. 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