如何设置:user_id有评论通知？

Question

每当创建通知时，我们如何为发表评论的用户设置 :user_id（并影响通知）？

当我出于某种原因检查 rails console 时，所有 Notifications 都显示为 user_id: 1，而其中一些应该是 user_id: 2，因为后者才是这样做的评论。

我可能只是对代码的理解不够好，因为我一直跟着 this tutorial 输入我自己的版本。

comment.rb

class Comment < ActiveRecord::Base
  after_create :create_notification
  has_many :notifications
  has_many :comment_likes   
  has_many :likers, through: :comment_likes, class_name: 'User', source: :liker
  belongs_to :valuation
  belongs_to :user
  validates :user, presence: true

private

  def create_notification # I replaced the tutorial's "Post" with my "Valuation"
    @valuation = Valuation.find_by(self.valuation_id)
    @user = User.find_by(@valuation.user_id).id
    Notification.create(
     valuation_id: self.valuation_id,
     user_id: @user,
     comment_id: self,
     read: false
    )
  end
end

notifications_controller

class NotificationsController < ApplicationController
  before_action :correct_user, only: [:destroy]

    def index
    @notifications = Notification.where(:user_id => current_user.id)
    @notifications.each do |notification|
        notification.update_attribute(:read, true)
    end
    end


    def destroy
      @notification = Notification.find(params[:id])
      @notification.destroy
      redirect_to :back
    end

private

  def correct_user
    @notification = current_user.notifications.find_by(id: params[:id])
    redirect_to root_url, notice: "Not authorized to edit this notification" if @notification.nil?
  end
end

notifications/_notification

<%= link_to Comment.find_by(notification.comment_id).user.name, user_path(Comment.find_by(notification.comment_id).user.id) %> commented on <%= link_to "your value", notification_valuation_path(notification, notification.valuation_id) %>

如果您需要进一步的解释或代码来帮助我，请告诉我:-]

Answer 1

这个

@valuation = Valuation.find_by(self.valuation_id)
@user = User.find_by(@valuation.user_id).id

Notification.create(
     valuation_id: self.valuation_id,
     user_id: @user,
     comment_id: self,
     read: false
    )

应该是

self.notifications.create(
  valuation: self.valuation,
  user: self.valuation.user
)

在您的迁移文件集中：

t.boolean read, default: false

在你的控制器中：

def index
  @notifications = Notification.where(:user_id => current_user.id)
  @notifications.each do |notification|
    notification.update_attribute(:read, true)
  end
end

变为：

def index
  @notifications = current_user.notifications
  @notifications.each do |notification|
    notification.update_attribute(:read, true) 
  end
end

如何设置:user_id有评论通知？

How to set :user_id with comment notifications?

ruby

model-view-controller

notifications

comments

ruby-on-rails