Postman post请求中的问题

Question

我正在尝试将 postman 与 mi controller “评论”的发布请求一起使用。 此请求向我显示以下错误：

“NoMethodError（未定义的方法‘新闻’......”

这是评论 model：

    class Comment < ApplicationRecord
  include Discard::Model

  belongs_to :user, optional: true
  belongs_to :news, optional: true

  validates :news_id, presence: true
  validates :user_id, presence: true
  validates :body, presence: true
end

这是 controller：

    module Api
  module V1
    class CommentsController < ApplicationController
      before_action :authenticate_request, only: %i[index create update destroy]
      before_action :set_comment, only: %i[update destroy]
      before_action :authorize_user, only: %i[show create update destroy]

      def index
        @comment = Comment.order('created_at DESC')
        render json: CommentSerializer.new(@comment,
                                            fields: { comment: :body })
                                       .serializable_hash, status: :ok
      end

      def create
        @comment = Comment.new(comment_params)
        @comment.user = @current_user
        @comment.news = @current_user.news.find(params[:news_id])
        if @comment.save
          render json: CommentsSerializer.new(@comment).serializable_hash, status: :created
        else
          render_error
        end
      end

      def update
        if ownership?
          @comment = Comment.update(comment_params)
          render json: CommentSerializer.new(@comment).serializable_hash
        else
          render json: @comment.errors, status: :unprocessable_entity
        end
      end

      def destroy
        if ownership?
          @comment.discard
          head :no_content
        else
          render json: { error: 'unauthorized' }, status: :unauthorized
        end
      end

      private

      def set_comment
        @comment = Comment.find(params[:id])
      end

      def comment_params
        params.require(:comment).permit(:body)
      end

      def render_error
        render json: { errors: @comment.errors.full_messages },
               status: :unprocessable_entity
      end

      def render_unauthorized
        render status: :unauthorized, json: {
          errors: [I18n.t('errors.controllers.unauthorized')]
        }
      end
    end
  end
end

当我在 postman 中发送帖子请求时，它显示以下问题：NoMethodError（#<User id: 27, first_name: "rafa", last_name: "quinteros", email: "rafa4@email. com”，password_digest：[过滤]，照片：nil，role_id：1，created_at：“2022-08-05 13:42:51.360055000 -0300”，updated_at：“2022-08-05 13:42:51.360055000 -0300” ，discarded_at：无>）：

Answer 1

好吧，您的comment.user收到@current_user ，但用户没有新闻方法/关系。 您应该编写一个新闻方法来阻止此错误。