关联USER_ID到注释模式？ [英] Associate user_id to the comment model?

问题描述

我用设计进行验证，我想USER_ID关联到comment模型。它的工作原理，当我送的user_id作为参数，但我想自动设置当前logined用户的USER_ID到每个注释。我该怎么办呢？

＃型号/ post.rb 类岗位＆LT;的ActiveRecord :: Base的   的has_many：评论   belongs_to的：类 结束 ＃型号/ comment.rb 一流的注释和LT;的ActiveRecord :: Base的   belongs_to的：交 结束 ＃型号/ category.rb    的has_many：帖子 ＃控制器/ comments_controller 类CommentsController＆LT;的ApplicationController     before_action：set_comment，只有：[：显示，编辑，：更新：灭]     before_action：的authenticate_user！ ＃GET /评论 ＃GET /comments.json 高清指数   @comments = Comment.all 结束 ＃GET /评论/ 1 ＃GET /comments/1.json 高清节目 结束 ＃GET /评论/新 高清新   @comment = Comment.new 结束 ＃GET /评论/ 1 /编辑 高清编辑 结束 ＃POST /评论 ＃POST /comments.json DEF创建   @comment = Comment.new（comment_params）   respond_to代码做|格式|     如果@ comment.save       的format.html {redirect_to时@comment，通知：评论已成功创建 }       format.json {渲染：表演，状态：创建，地点：@comment}     其他       的format.html {渲染：新}       format.json {渲染JSON：@ comment.errors，状态：unprocessable_entity}     结束   结束 结束 ＃PATCH / PUT /评论/ 1 ＃PATCH / PUT /comments/1.json DEF更新   respond_to代码做|格式|     如果@ comment.update（comment_params）       的format.html {redirect_to时@comment，通知：评论已成功更新 }       format.json {渲染：表演，状态：OK，地点：@comment}     其他       的format.html {渲染：编辑}       format.json {渲染JSON：@ comment.errors，状态：unprocessable_entity}     结束   结束 结束 ＃删除/评论/ 1 ＃删除/comments/1.json DEF破坏   @ comment.destroy    respond_to代码做|格式|     的format.html {redirect_to时comments_url，通知：有人评论成功摧毁 }      format.json {头：} NO_CONTENT   结束 结束 私人   ＃使用回调分享共同的设置或动作之间的约束。   高清set_comment     @comment = Comment.find（PARAMS [：ID]）   结束   ＃从不信任的参数从可怕的网络，只允许白名单通过。   高清comment_params     params.require（：评论）.permit（：评级：评论，：的post_id，：USER_ID）   结束  结束

解决方案

使用关联用户的has_many的意见和 belongs_to的用户评论

高清新   @comment = current_user.comments.build 结束

高清创建   @comment = current_user.comments.build（comment_params） 结束

I use devise for authentication, I want to associate user_id to the comment model. It works when I send user_id as a parameter, But I want to set the current logined user's user_id automatically to the each comment. How can I do that?

#model/post.rb

class Post < ActiveRecord::Base
  has_many :comments
  belongs_to :category
end

#model/comment.rb

class Comment < ActiveRecord::Base

  belongs_to :post
end

#model/category.rb
   has_many :posts
#controllers/comments_controller

class CommentsController < ApplicationController
    before_action :set_comment, only: [:show, :edit, :update, :destroy]
    before_action :authenticate_user!


# GET /comments
# GET /comments.json
def index
  @comments = Comment.all
end

# GET /comments/1
# GET /comments/1.json
def show
end

# GET /comments/new
def new
  @comment = Comment.new
end

# GET /comments/1/edit
def edit
end

# POST /comments
# POST /comments.json
def create
  @comment = Comment.new(comment_params)

  respond_to do |format|
    if @comment.save
      format.html { redirect_to @comment, notice: 'comment was successfully created.' }
      format.json { render :show, status: :created, location: @comment }
    else
      format.html { render :new }
      format.json { render json: @comment.errors, status: :unprocessable_entity }
    end
  end
end

# PATCH/PUT /comments/1
# PATCH/PUT /comments/1.json
def update
  respond_to do |format|
    if @comment.update(comment_params)
      format.html { redirect_to @comment, notice: 'comment was successfully updated.' }
      format.json { render :show, status: :ok, location: @comment }
    else
      format.html { render :edit }
      format.json { render json: @comment.errors, status: :unprocessable_entity }
    end
  end
end

# DELETE /comments/1
# DELETE /comments/1.json
def destroy
  @comment.destroy
   respond_to do |format|
    format.html { redirect_to comments_url, notice: 'comment was successfully destroyed.' }
     format.json { head :no_content }
  end
end

private
  # Use callbacks to share common setup or constraints between actions.
  def set_comment
    @comment = Comment.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def comment_params
    params.require(:comment).permit(:rating, :comment, :post_id, :user_id)
  end
 end

解决方案

use associations user has_many comments and comments belongs_to user

def new @comment = current_user.comments.build end

def create @comment = current_user.comments.build(comment_params) end

这篇关于关联USER_ID到注释模式？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！