Ruby-on-rails Rails 语法错误：意外的keyword_ensure，期望输入结束
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Rails syntax error : unexpected keyword_ensure, expecting end-of-input
提问by trialError
I am a newbie in rails and i tried creating a forum application based on a tutorial. This is my forum page but i keep getting the error:
我是 Rails 的新手，我尝试根据教程创建一个论坛应用程序。这是我的论坛页面，但我不断收到错误消息：
syntax error, unexpected keyword_ensure, expecting end-of-input
Extracted source (around line #33):
30
31 <p><% if admin? %><%= link_to "New Forum", new_forum_path %><% end %></p>
here is the forum index page which is throwing the error:
这是引发错误的论坛索引页面：
<% title "Forums" %>
<table>
<tr>
<th width="70%">Forum</th>
<th width="30%">Last Post</th>
</tr>
<% for forum in @forums %>
<tr>
<td><h4><%= link_to h(forum.name), forum_path(forum.id) %></h4>
<small><%= forum.topics.count %> topics</small><br />
<%=h forum.description %></td>
<td class="right">
<% if forum.most_recent_post %>
<%= distance_of_time_in_words_to_now forum.most_recent_post.last_post_at %>
ago by
<%= link_to forum.most_recent_post.user.username, "/users/#{forum.most_recent_post.last_poster_id}" %>
<% else %>no posts<% end %>
</td>
<% if admin? %>
<td><%= link_to "Edit", edit_forum_path(forum) %>
<% end %></td>
<!-- <% end %> -->
<% if admin? %>
<td><%= link_to "Destroy", forum, :confirm => 'Are you sure?', :method => :delete %></td>
<% end %>
</tr>
<% end %>
<p><% if admin? %><%= link_to "New Forum", new_forum_path %><% end %></p>
回答by Benjamin Udink ten Cate
<!-- <% end %> -->what is this doing? a html commented ERB tag will still evaluate. Remove it. if you want to comment ruby code use #instead, like <% #end %>
<!-- <% end %> -->这是在做什么？html 注释的 ERB 标签仍将评估。去掉它。如果您想评论 ruby 代码，请#改用，例如<% #end %>
回答by Jonathan Bender
Properly formatted code goes a long way towards diagnosing problems like this (mismatch and the like). Try out the following:
正确格式化的代码对诊断此类问题（不匹配等）大有帮助。尝试以下操作：
<% title "Forums" %>
<table>
<tr>
<th width="70%">Forum</th>
<th width="30%">Last Post</th>
</tr>
<% for forum in @forums %>
<tr>
<td>
<h4><%= link_to h(forum.name), forum_path(forum.id) %></h4>
<small><%= forum.topics.count %> topics</small>
<br />
<%=h forum.description %>
</td>
<td class="right">
<% if forum.most_recent_post %>
<%= distance_of_time_in_words_to_now forum.most_recent_post.last_post_at %>
ago by
<%= link_to forum.most_recent_post.user.username, "/users/#{forum.most_recent_post.last_poster_id}" %>
<% else %>
no posts
<% end %>
</td>
<% if admin? %>
<td><%= link_to "Edit", edit_forum_path(forum) %></td>
<td><%= link_to "Destroy", forum, :confirm => 'Are you sure?', :method => :delete %></td>
<% end %>
</tr>
<% end %>
</table>
<% if admin? %>
<p><%= link_to "New Forum", new_forum_path %></p>
<% end %>
回答by CMW
I think you have the order of opening and closing blocks jumbled up.
if, forare all opening blocks that have to be closed at the appropriate times.
我认为您的打开和关闭块的顺序混乱了。
if,for是所有必须在适当时间关闭的打开块。
The commented-out end tag that Benjamin mentioned is actually important but misplaced and has to go between your </tr>and </table>tags to close the for forum in @forums.
Benjamin 提到的注释掉的结束标签实际上很重要但放错了位置，必须在您的</tr>和</table>标签之间关闭for forum in @forums.
I prepared a modified version with some realignments, so I could make sense of it more easily. Haven't actually tested it, though.
我准备了一个经过一些重新调整的修改版本，所以我可以更容易地理解它。不过还没有实际测试过。
<% title "Forums" %>
<table>
<tr>
<th width="70%">Forum</th>
<th width="30%">Last Post</th>
</tr>
<% for forum in @forums %>
<tr>
<td>
<h4><%= link_to h(forum.name), forum_path(forum.id) %></h4>
<small><%= forum.topics.count %> topics</small><br />
<%=h forum.description %></td>
<td class="right">
<% if forum.most_recent_post %>
<%= distance_of_time_in_words_to_now forum.most_recent_post.last_post_at %>
ago by
<%= link_to forum.most_recent_post.user.username, "/users/#{forum.most_recent_post.last_poster_id}" %>
<% else %>
no posts
<% end %>
</td>
<% if admin? %>
<td>
<%= link_to "Edit", edit_forum_path(forum) %>
</td>
<% end %>
<% if admin? %>
<td><%= link_to "Destroy", forum, :confirm => 'Are you sure?', :method => :delete %></td>
<% end %>
</tr>
<% end %>
</table>
<p>
<% if admin? %>
<%= link_to "New Forum", new_forum_path %>
<% end %>
</p>
回答by amine
all I could see wrong is that you set endbefore it should here
我所看到的错误是你在它应该在这里之前设置了结束
<% if admin? %>
<td><%= link_to "Edit", edit_forum_path(forum) %>
<% end %></td>
so try to move it like this
所以试着像这样移动它
<% if admin? %>
<td><%= link_to "Edit", edit_forum_path(forum) %>
</td><% end %>
