Question

我有一个form_for我在我的视图助手中制作，这将让一个用户从一个组中提升另一个用户。

  def promote_button_for(group, user)
    membership = group.get_membership( user )
    form_for membership, :url => group_membership_path( group, membership ) do |f|
      f.hidden_field :group_creator
      hidden_field_tag 'test', '1'
      f.submit( "Promote", :onclick => "return confirm(\"Are you sure you want to promote #{user.email} to an officer?\")" )
    end
  end

当我通过按钮提交表单时，我似乎没有将任何隐藏的字段参数发送到控制器。

Started POST "/groups/1/memberships/6" for 127.0.0.1 at 2011-02-01 01:45:32 -0600
  Processing by MembershipsController#update as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"VQl/rVX8OVOETv2HE7KtopUc3B19ShoMkUhjJwNlaZs=", "commit"=>"Promote", "group_id"=>"1", "id"=>"6"}

生成的Html如下所示：

<form accept-charset="UTF-8" action="/groups/1/memberships/6" class="edit_membership" id="edit_membership_6" method="post">
   <div style="margin:0;padding:0;display:inline">
      <input name="utf8" type="hidden" value="&#x2713;" />
      <input name="_method" type="hidden" value="put" />
      <input name="authenticity_token" type="hidden" value="VQl/rVX8OVOETv2HE7KtopUc3B19ShoMkUhjJwNlaZs=" />
   </div>
   <input id="membership_submit" name="commit" onclick="return confirm(&quot;Are you sure you want to promote kquiring@gmail.com to an officer?&quot;)" type="submit" value="Promote" />
</form>

非常感谢任何帮助，

谢谢！

Answer 1

你能试试吗

f.hidden_field :group_creator, {:value => ''}

Answer 2

您遇到此问题，因为form_for对象只看到上一个f.submit标记生成的字符串，而form_for和{{1}之间的所有内容都是如此失去了。

在这种情况下，f.submit标记不会直接操作视图，因为它基本上只是从form_for方法返回的字符串。

答案是你只需要将生成的标签链接在一起，如下所示：

promote_button_for

注意def promote_button_for(group, user) membership = group.get_membership( user ) form_for membership, :url => group_membership_path( group, membership ) do |f| f.hidden_field(:group_creator) << \ hidden_field_tag('test', '1') << \ f.submit( "Promote", :onclick => "return confirm(\"Are you sure you want to promote #{user.email} to an officer?\")" ) end end，它将所有生成的字符串连接在一起并将它们返回到<< \。

Rails：form_for中的隐藏字段不向控制器发送参数

2 个答案: