Ruby on rails 3 Rails:在另一个模型的创建表单中捕获模型id

Ruby on rails 3 Rails:在另一个模型的创建表单中捕获模型id,ruby-on-rails-3,models,nested-forms,relationships,Ruby On Rails 3,Models,Nested Forms,Relationships,我目前有三个模型,正在尝试将其中一个模型(webpage.id)的引用引入另一个模型(Micropost)-情况如下: class Member < ActiveRecord::Base has_many :microposts end class Webpage < ActiveRecord::Base has_many :microposts, :dependent => :destroy end class Micropost < ActiveRecor

我目前有三个模型,正在尝试将其中一个模型(webpage.id)的引用引入另一个模型(Micropost)-情况如下:

class Member < ActiveRecord::Base
  has_many :microposts
end

class Webpage < ActiveRecord::Base
  has_many :microposts, :dependent => :destroy
end

class Micropost < ActiveRecord::Base
  belongs_to :member
  belongs_to :webpage
end
类成员:销毁
终止
类Micropost
我试图做的是从网页:show方法创建一个Micropost

这是Micropost控制器:

class MicropostsController < ApplicationController
  def create
    @micropost  = current_member.microposts.build(params[:micropost])
    @webpage = Webpage.find(params['webpage_id'])
    @micropost.webpage = @webpage
    if @micropost.save
      flash[:success] = "Micropost created!"
      redirect_to root_path
    else
      @feed_items = []
      render 'pages/home'
    end
  end
end
class MicropostsController
从网页“显示”视图:

<table class="front" summary="For signed-in members">
    <tr>
      <td class="main">
        <h1 class="micropost">What's up?</h1>
        <%= form_for @micropost do |f| %>
          <%= render 'shared/error_messages', :object => f.object %>
          <div class="field">
            <%= f.text_area :content %>
            <input type="hidden" id="webpage_id" name="micropost[webpage_id]" value="<%= @webpage.id %>"/>
          </div>
          <div class="actions">
            <%= f.submit "Submit" %>
          </div>
        <% end %>
      </td>
    </tr>
</table>

怎么了?
f、 对象%>
保存表单时,出现以下错误:

“找不到没有ID的网页”

当我从表单中删除对网页的引用时,表单成功地保存并设置了user\u id字段-因此这工作正常(但显然在这种情况下,网页的id为NULL)

你有没有想过我会错在哪里

干杯


Damo

转储参数以确保网页id确实被传递

在您的视图中添加:

<%= debug params %>

转储参数以确保网页id确实被传递

在您的视图中添加:

<%= debug params %>