我有一个评论控制器和一个产品控制器。它在带有Forbidden Attributes错误的注释控制器的创建操作时失败。
我已从模型中删除了所有attr_accessible并将它们移动到控制器。还是有些不对劲。我无法弄清楚是什么。请任何人都可以告诉我我错过了什么。
@comment = @commentable.comments.new(params[:comment]) <--- Fail here
来自更好错误的Live Shell o / p:
>> params[:comment]
=> {"content"=>"thanks"}
>> @commentable
=> #<Product id: 1, title: "Coffee Mug", description: "<p> This coffee mug blah blah", image_url: "http://coffee.com/en/8/82/The_P...", price: #<BigDecimal:7ff8769a9e00,'0.999E1',18(45)>, tags: nil, created_at: "2014-02-24 14:49:34", updated_at: "2014-02-24 14:49:34">
>> @commentable.comments
=> #<ActiveRecord::Associations::CollectionProxy []>
>> @commentable.comments.new(params[:comment])
!! #<ActiveModel::ForbiddenAttributesError: ActiveModel::ForbiddenAttributesError>
>>
评论控制器:
class CommentsController < ApplicationController
def new
@comment = @commentable.comments.new
end
def create
@comment = @commentable.comments.new(params[:comment]) <-- fail here
if @comment.save
redirect_to product_path(params[:product_id])
else
render :new
end
端
def comments_params
params.require(:comments).permit(:commentable, :product_id, :content)
end
产品总监:
class ProductsController < ApplicationController
def show
@product = Product.find(params[:id])
@commentable = @product
@comments ||= Comment.where(:commentable_id => params[:id])
@comment = Comment.new
end
def product_params
params.require(:product).permit(:title, :description, :image_url, :price, :tags, comments_attributes: [:product_id, :content])
end
型号: product.rb
class Product < ActiveRecord::Base
has_many :comments, as: :commentable
accepts_nested_attributes_for :comments
end
comment.rb
class Comment < ActiveRecord::Base
belongs_to :commentable, polymorphic: true
end
答案 0 :(得分:6)
我猜你正在使用Rails4,因为你实现了comments_params
方法。
在Rails 4中,强参数用于将质量分配保护移出模型并进入控制器。您已实现方法comments_params
但未使用它。
替换
@comment = @commentable.comments.new(params[:comment])
带
@comment = @commentable.comments.new(comments_params)
另外,请按以下步骤更新comments_params
def comments_params
params.require(:comment).permit(:commentable, :product_id, :content)
end
注意:需要单数:comment
而不是复数:comments