我无法理解这是怎么发生的。在我的页面上显示源代码是这样开始的——是的，那是 html 的开始，我在 Chrome 和 Safari 中仔细检查了它......
</div>
</div>
</div>
<!DOCTYPE html>
<html>
<head>
<title>Rstest</title>
<link href="/assets/application.css?body=1" media="all" rel="stylesheet" type="text/css" />
<link href="/assets/bootstrap_and_overrides.css?body=1" media="all" rel="stylesheet" type="text/css" />
<link href="/assets/custom.css?body=1" media="all" rel="stylesheet" type="text/css" />
然而我的 application.html.erb 是这样开始的：
<!DOCTYPE html>
<html>
<head>
<title>Rstest</title>
<%= stylesheet_link_tag "application", :media => "all" %>
<%= javascript_include_tag "application" %>
<%= csrf_meta_tags %>
我想不出会导致这种情况的场景......
以下是来自日志的更多详细信息：
Rendered reports/report.html.erb within layouts/reptabs (1093.5ms)
Rendered layouts/application.html.erb (12.8ms)
以下是相关观点：
应用程序.html.erb：
<!DOCTYPE html>
<html>
<head>
<title>Rstest</title>
<%= stylesheet_link_tag "application", :media => "all" %>
<%= javascript_include_tag "application" %>
<%= csrf_meta_tags %>
</head>
<body>
<header class="navbar navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<%= link_to "Repeat Survey", '#', id: "logo" %>
<nav>
<ul class="nav pull-right">
<li><%= link_to "Home", '#' %></li>
<li><%= link_to "About", '#' %></li>
<li><%= link_to "Contact", '#' %></li>
<li><%= link_to "Help", '#' %></li>
</ul>
</nav>
</div>
</div>
</header>
<div class="container">
<%= content_for?(:content) ? yield(:content) : yield %>
</div>
</body>
</html>
reptabs.html.erb：
<% content_for :content do %>
<div class="container">
<ul class="nav nav-tabs">
<li><%= link_to "Reports", report1_path(@program_id) %></li>
<li><%= link_to "Settings", edit_program_path(@program_id) %></li>
<li><%= link_to "Rounds", program_rounds_path(@program_id) %></li>
<li><%= link_to "Participants", program_participants_path(@program_id) %></li>
<li><%= link_to "Questions", program_questions_path(@program_id) %></li>
</ul>
<div class="container">
<div class="row">
<div class="span2">
<ul class="nav nav-pills nav-stacked">
<li><%= link_to("q r p", report1_path(@program_id)) %></li>
<li><%= link_to("r q p", report2_path(@program_id)) %></li>
<li><%= link_to("p r q", report3_path(@program_id)) %></li>
<li><%= link_to("p q r", report4_path(@program_id)) %></li>
</ul>
</div>
<div class="span9">
<%= content_for?(:reptabs_content) ? yield(:reptabs_content) : yield %>
<% end %>
</div>
</div>
</div>
<%= render :template => 'layouts/application' %>
报告.html.erb：
<h2>Report</h2>
<p>
<%= @presenter.to_s %>
</p>
<table class="table table-striped">
<thead>
<tr>
<th>....</th>
<% @presenter.headers.each do |hdr| %>
<th><%= hdr %></th>
<% end %>
</tr>
</thead>
<tbody>
<% @presenter.rows.each do |row_instance| %>
<tr>
<td><%= @presenter.row_label(row_instance) %></td>
<% @presenter.cols.each do |col_instance| %>
<td>
<%= @presenter.cell(row_instance, col_instance).count %> =>
<%= @presenter.cell(row_instance, col_instance).join(", ") %>
</td>
<% end %>
</tr>
<% end %>
</tbody>
</table>
我想知道我的 content_for 语句是否搞砸了？