fields_for不呈现关联名称(belongs_to关系)

时间:2011-06-20 19:00:40

标签: ruby-on-rails-3 belongs-to fields-for

我正在尝试创建表单来创建活动。事件属于(类用户的)创建者,表单包括创建者的fields_。

很大程度上,表单正在运行 - 它会正确呈现其他所有内容,并且当fields_for @ event.creator部分被注释掉时,create操作会正确处理它。尽管如此,fields_for标签是渲染事件[user]标签而不是event [creator],我无法弄清楚原因。想法?以下是相关的摘录。

(在views / events / new.html.erb中)

<%= form_for @event do |form| %>
   <%= render :partial => '/events/form', :object => form %>
   <%= form.submit 'Go!' %>
<% end %>

(在events / _form.html.erb中)

...

<% if !signed_in? %>
  To create your event, please provide an email address and create a password. <br />


  <%= form.fields_for @event.creator do |uf| %>
    <div class="email_field">
      <%= uf.label :email %>
      <%= uf.text_field :email, :type => "email" %>
    </div>

...
  <% end %>
<% end %>

(控制器/ events_controller.rb)

def new
   @event = Event.new

   if !signed_in?
     @event.build_creator
   end

   respond_to do |format|
     format.html # new.html.erb
     format.xml  { render :xml => @event }
   end
 end

(型号/ event.rb)

belongs_to :creator, :class_name => "User"
accepts_nested_attributes_for :creator

这很有用,但表单元素呈现为

<div class="email_field"> 
  <label for="event_user_email">Email</label> 
  <input id="event_user_email" name="event[user][email]" size="30" type="email" /> 
</div> 
<div class="password_field"> 
  <label for="event_user_password">Password</label> 
  <input id="event_user_password" name="event[user][password]" size="30" type="password" /> 
</div>
...

这里的问题是event_user和event [user]而不是event_creator和event [creator];当我提交表单时,我收到错误,该事件没有用户字段。

1 个答案:

答案 0 :(得分:3)

<%= form.fields_for :creator, @event.creator do |uf| %>