我正在尝试使用一个简单的嵌套表单来处理has_many belongs_to多态关联。表单正在渲染字段,但是当它提交时,它会从create方法中产生一个“未知属性”错误。以下是相关代码:
user.rb
class User < ActiveRecord::Base
has_many :images, :as => :imageable
accepts_nested_attributes_for :images
end
users_controller.rb
class UsersController < ApplicationController
def show
@user = User.find(params[:id])
end
def new
@user = User.new
@user.images.build
end
def create
@user = User.new(params[:user])
if @user.save
redirect_to @user
else
render 'new'
end
end
end
视图/用户/ new.html.erb
<%= form_for @user, :html => { :multipart => true } do |form| %>
<%= form.fields_for :images, @user.images do |builder| %>
<%= builder.file_field :images %>
<% end %>
<%= form.submit "Create user" %>
<% end %>
image.rb
class Image < ActiveRecord::Base
belongs_to :imageable, :polymorphic => true
has_attached_file :image_resource
end
我正在使用paperclip gem作为image.rb中的has_attached_file方法。确切的错误是“未知属性:图像”
答案 0 :(得分:0)
哎呀这里唯一的问题是我应该是&lt;%= builder.file_field:image_resource%&gt;