难以从另一个视图渲染部分内容

Question

我在 Rails 4.2.1 中渲染局部时遇到问题。 Rails 服务器日志中没有错误，视图中也没有输出。我已经删除了 as: 选项，结果还是一样。即使我对部分内容进行硬编码，视图也不会显示信息，服务器日志也不会显示任何错误。

app/views/registry_requests/_index.html.erb

<p><%= request.vehicle.make %></p>

app/views/users/_admin.html.erb

<!-- Columns -->
<div class="row">
  <!-- Dashboard -->
  <%= render 'admin_panel' %>

  <!-- Body Content -->
  ...

    <!-- Widgets -->
    ...
          <%= render partial: "registry_requests/index", collection: @registry_requests, as: :request %>

        ...
      <!-- Blog Feed -->
      <div class="col-sm-6">
        <div class="admin-widget">
          <h1 class="widget">Recent Blog Posts</h1>
          ...
        </div>
        <a class="admin-widget-link" href="blog_create.html">Create Post</a>
      </div>
      <!-- Current Moderators -->
      <div class="col-sm-6">
        <div class="admin-widget">
          <h1 class="widget">Current Moderators</h1>
          ....
        </div>
        <a class="admin-widget-link" href="#">Manage Moderators</a>
      </div>
    </div>
  </div>
</div>

日志

Started GET "/users/6" for ::1 at 2015-08-18 12:35:30 -0400
Processing by UsersController#show as HTML
  Parameters: {"id"=>"6"}
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 6]]
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 6]]
  Rendered users/_admin_panel.html.erb (0.4ms)
  Rendered registry_requests/_index.html.erb (0.0ms)
  Rendered users/_admin.html.erb (3.8ms)
  Rendered users/show.html.erb within layouts/application (5.8ms)
Completed 200 OK in 117ms (Views: 113.7ms | ActiveRecord: 0.2ms)

Answer 1

试试这个：

<% request.each do |one_request| %>
  <p><%= one_request.vehicle.make %></p>
<% end %>

Answer 2

你应该尝试做这样的事情：

在你的app/views/users/_admin.html.erb

<% @registry_requests.each do |request| %>
  <%= render partial: "registry_requests/index", :locals => {:registry_request => request} %>
<% end %>

app/views/registry_requests/_index.html.erb

<p><%= registry_request.vehicle.make %></p>

由于 @registry_requests 是一个集合，因此您必须遍历它以获取每条记录，以便找到每条记录的 make.

Answer 3

不错！

确保 @registry_requests 在您的 UsersController#show

中定义