Heroku Error Deleting a Post in Production: Rails - ruby-on-rails

Question

I am trying to delete a post in my app. It's working fine in localhost but when i pushed to heroku it's not working. I get an error saying "Something went wrong , Please check the logs". Here is my code:
posts_controller.rb
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy]
before_action :authenticate_user! , except: [:index,:show,:search]
before_filter :check_user, only: [:edit,:update,:destroy]
# GET /posts
# GET /posts.json
def search
if params[:search].present?
#posts = Post.search(params[:search])
else
#posts = Post.all
end
end
def index
if params[:tag]
#posts = Post.tagged_with(params[:tag])
else
#posts = Post.all
end
end
# GET /posts/1
# GET /posts/1.json
def show
#reviews = Review.where(post_id: #post.id)
end
# GET /posts/new
def new
#post = Post.new
end
# GET /posts/1/edit
def edit
#post = Post.find(params[:id])
end
# POST /posts
# POST /posts.json
def create
#post = Post.new(post_params)
#post.user_id = current_user.id
respond_to do |format|
if #post.save
format.html { redirect_to #post, notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: #post }
else
format.html { render :new }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /posts/1
# PATCH/PUT /posts/1.json
def update
respond_to do |format|
if #post.update(post_params)
format.html { redirect_to root_url, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: #post }
else
format.html { render :edit }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
# DELETE /posts/1
# DELETE /posts/1.json
def destroy
#post.destroy
respond_to do |format|
format.html { redirect_to root_path, notice: 'Post was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
#post = Post.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:title, :description,:image,:all_tags)
end
def check_user
if current_user.id != #post.user_id
redirect_to root_path , alert: "Sorry this Post belongs to someone else"
end
end
end
The Logs
view/posts/index.html.erb
<h3>Posts</h3>
<table class="table">
<thead>
<tr>
<th colspan="3"></th>
</tr>
</thead>
<tbody>
<% #posts.each do |post| %>
<tr>
<td><h4><%=link_to post.title , post%></h4></td>
<td><%=raw tag_links(post.all_tags)%></td>
<td><%= link_to 'Edit', edit_post_path(post) %></td>
<td><%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<%end%>
</tbody>
</table>
models/post.rb
class Post < ActiveRecord::Base
searchkick
has_many :reviews , dependent: :destroy
has_many :taggings, dependent: :destroy
has_many :tags, through: :taggings
#Paperclip Installation
has_attached_file :image, styles: { medium: "300x300>", thumb: "100x100>" }, default_url: "/images/:style/missing.png"
validates_attachment_content_type :image, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]
def all_tags=(names)
self.tags = names.split(",").map do |name|
Tag.where(name: name.strip).first_or_create!
end
end
def all_tags
self.tags.map(&:name).join(", ")
end
def self.tagged_with(name)
Tag.find_by_name!(name).posts
end
end
Schema
ActiveRecord::Schema.define(version: 20151026124712) do
create_table "posts", force: :cascade do |t|
t.string "title"
t.text "description"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "user_id"
t.string "tags"
t.string "image_file_name"
t.string "image_content_type"
t.integer "image_file_size"
t.datetime "image_updated_at"
end
create_table "reviews", force: :cascade do |t|
t.text "comment"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "user_id"
t.integer "post_id"
end
create_table "taggings", force: :cascade do |t|
t.integer "post_id"
t.integer "tag_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "taggings", ["post_id"], name: "index_taggings_on_post_id"
add_index "taggings", ["tag_id"], name: "index_taggings_on_tag_id"
create_table "tags", force: :cascade do |t|
t.string "name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "users", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at"
t.datetime "updated_at"
t.string "name"
end
add_index "users", ["email"], name: "index_users_on_email", unique: true
add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
create_table "votes", force: :cascade do |t|
t.integer "votable_id"
t.string "votable_type"
t.integer "voter_id"
t.string "voter_type"
t.boolean "vote_flag"
t.string "vote_scope"
t.integer "vote_weight"
t.datetime "created_at"
t.datetime "updated_at"
end
add_index "votes", ["votable_id", "votable_type", "vote_scope"], name: "index_votes_on_votable_id_and_votable_type_and_vote_scope"
add_index "votes", ["voter_id", "voter_type", "vote_scope"], name: "index_votes_on_voter_id_and_voter_type_and_vote_scope"
end

Answer 1

As the error log says, there are foreign keys related to posts in taggings table, so it does not allow you to delete posts.
I guess a post has many taggings, and a tagging belongs to a tag? In this case, you need to delete all taggings belong to the post you want to delete. The easiest way is adding dependent: :destroy to your post model like
# models/post.rb
has_many :taggings, dependent: :destroy

Answer 2

You have some records in Taggings table which referenced to Post record.
So you have several options -
has_many :taggings, dependent: :destroy
Or you can change yours migration:
add_foreign_key :taggins, :posts, on_delete: :cascade (you can add this in database migration)
Described here