如何在表格内放置隐藏表格？

Question

我是HTML和RoR的新手。我尝试在表旁边提供一个提交隐藏表单的按钮。但是由于某种原因，该按钮未显示在生成的HTML中。

<table class="centerBox">
  <h3>Search Results:</h3>
  <thead>
  <tr>
    <th>Name</th>
    <th>Code</th>
    <th>Subject_id</th>
  </tr>
  </thead>

  <tbody>
  <% @searchResults.each do |searchResult| %>
    <tr>
      <td><%= searchResult.name %></td>
      <td><%= searchResult.code %></td>
      <td><%= searchResult.subject_id %></td>
      <td>
        <% form_for(:enrollment, url: enroll_path) do |f| %>
          <div class="actions">
            <%= f.hidden_field(:enrollment, :course_name => searchResult.name)%>
            <%= f.hidden_field(:enrollment, :user_id => current_user) %>
            <%= f.submit "Enroll"%>
          </div>
        <% end %>
      </td>
    </tr>
  <% end %>
  </tbody>
</table>

生成的HTML：

<tr>
      <td>Independent Study</td>
      <td>AAAS 98B</td>
      <td>1161-100</td>
      <td>
      </td>
</tr>

在网页上：

Answer 1

要使erb代码打印您调用的方法的输出，您需要对= <％=％>标签使用=，就像对字段和提交按钮所做的一样。

<%= form_for(:enrollment, url: enroll_path) do |f| %>
  <div class="actions">
    <%= f.hidden_field(:enrollment, :course_name => searchResult.name) %>
    <%= f.hidden_field(:enrollment, :user_id => current_user) %>
    <%= f.submit "Enroll"%>
  </div>
<% end %>