ruby-on-rails - ActiveModel::ForbiddenAttributesError

Question

我一直在遵循关于创建和安装引擎的 rails 指南 here .创建博客文章，当我尝试发表评论时，它返回“ActiveModel::ForbiddenAttributesError in Blorgh::CommentsController#create”错误。
评论 Controller

    require_dependency "blorgh/application_controller"

module Blorgh
  class CommentsController < ApplicationController
    def create
      @post = Post.find(params[:post_id])
      @comment = @post.comments.create(params[:comment])
      flash[:notice] = "Comment has been created!"
      redirect_to posts_path
    end
  end
end

这是评论模型

 module Blorgh
  class Comment < ActiveRecord::Base

  end
end

如何解决问题？

Answer 1

我猜你在使用 rails 4. 你需要标记所有必需的参数
在这里:

   def create
      @post = Post.find(params[:post_id])
      @comment = @post.comments.create(post_params)
      flash[:notice] = "Comment has been created!"
      redirect_to posts_path
    end

    def post_params
      params.require(:blorgh).permit(:comment)
    end

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