Fix foreign key for post

Author: TruongNM

.gitignore

@@ -24,3 +24,4 @@
 
 # Ignore application configuration
 /config/application.yml
+public/*

app/models/post.rb

@@ -1,9 +1,9 @@
 class Post < ApplicationRecord
   belongs_to :user
   has_many :photos, dependent: :destroy
-  has_many :likes, -> {order(:created_at => :desc)}
-  has_many :comments, -> {order(:created_at => :desc)}
-  has_many :bookmarks
+  has_many :likes, -> {order(:created_at => :desc)}, dependent: :destroy
+  has_many :comments, -> {order(:created_at => :desc)}, dependent: :destroy
+  has_many :bookmarks, dependent: :destroy
 
   def is_belongs_to? user
     Post.find_by(user_id: user.id, id: id)