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）？

当我因某些原因检查rails console时，所有Notifications显示为user_id: 1时，其中一些user_id: 2应为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，因为后者是进行评论的人

我可能只是不太了解代码，因为我沿着 this tutorial 继续输入我自己的版本。

comment.rb

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_controller

<%= 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) %>

通知/ _notification

List<String> value = entry.getValue();
String timeEntries = value.toString();
String after = timeEntries.replace(",", " ");
String after2 = after.replace("  ", " ");
String after3 = after2.replace("[", "");
String after4 = after3.replace("]", "");

如果您需要进一步的说明或代码来帮助我，请告诉我： - ]

Answer 1

此

@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
)

迁移文件集中的

：

t.boolean read, default: false

在您的控制器中：

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：带评论通知的user_id？

1 个答案: