Question

这是我的评论/ _form.html.erb

中的代码段

<%#


Create/edit a single comment
 render :partial => "comment/form", 
       :locals => {:comment => my_comment, :stage => my_stage, :user => my_user }

%>
<% 
comment ||= Comment.new 
comment.stage = stage
comment.user = user
new_record = comment.new_record?
%>
<%= form_for(comment, :html => { :class=>"ajax-form", :id => "comment-ajax-form"}, :remote => true, :disable_with => (new_record ? "Adding..." : "Saving...")) do |f|  %>
    <%= f.hidden_field :stage_id %>
    <%= f.hidden_field :user_id %>
    <h3>Add a Comment</h3>
  <% if comment.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(comment.errors.count, "error") %> prohibited this comment from being saved:</h2>

      <ul>
      <% comment.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>
  <div>
    <div class="uploads" >
    <div class="hint">Select the images you are discussing</div>
    <% stage.uploads.each do |upload| %>
        <div class="upload-image image-selector" title="<%= upload.name %>" id="image-selector-<%= upload.id %>">
         <%= image_tag  upload.image.url(:thumb) %>
        <%= check_box_tag "comment[upload_ids][]", upload.id, comment.uploads.include?(upload), :id => "comment[uploads_ids][#{upload.id}]", :autocomplete => "off", :style => "display:none;" %>
         </div>
        <% end %>
    </div>
    <%= f.text_area :body, :style=> "width: 100%", :rows => 10 %>
        <div class="actions">
           <%= f.submit(new_record ? "Add Comment" : "Save", :class => "green awesome") %>
         </div>
</div>
<br style="clear:both" />
<% end %>
<% content_for(:deferred_js) do %>
$('#comment-ajax-form')
    .bind("ajax:success", function(evt, data, status, xhr){
    compv.comments.updateView('comments', xhr);
    $('div.image-selector').each(function(){
        var element = $(this);
        element.children('input').attr('checked', false);
        element.removeClass('selected-image');
    });
});
// Code will also need to be changed in the #add-comment click event in view.js
$('div.image-selector').live("click", function(){
    var element = $(this);
    var checkbox = element.children('input');
    if(!checkbox.attr('checked')){
        checkbox.attr('checked', true);
        element.addClass('selected-image');
    }else{
        checkbox.attr('checked', false);
        element.removeClass('selected-image');
    }
});
<% end %>

它产生的错误是在第9行附近 - 即comment.stage = stage：

undefined local variable or method `stage' for #<#<Class:0x00000105621a50>:0x0000010561d450>

当我访问myapp.com/comments/2/edit

时，我看到了这个错误

编辑视图只执行以下操作：

<h3> Editing a Comment </h3>

<%= render 'form' %>

<%= link_to 'Show', @comment %>

但是，当我转到一个呈现此表单的页面时，我添加了一个新评论，这很好。它不会产生此错误。

刚才我正在尝试编辑和删除产生此错误的所述评论。

想法？

为什么以下代码在Rails 3中给出了这个错误？

0 个答案: