favorite controller

app/controllers/favorites_controller.rb

+class FavoritesController < ApplicationController
+  before_action :authenticate_user!, only: [:create, :destroy]
+
+  def create
+    redirect_to new_user_session_path unless user_signed_in?
+    redirect_to jobs_path if params[:job_id].blank?
+
+    @job_id = params[:job_id]
+    @all_favorite_job.find_by(job_id: @job_id) ||
+    @all_favorite_job.create!(user_id: current_user.id, job_id: @job_id, favorited_at: Time.current)
+  end
+
+  def destroy
+    redirect_to new_user_session_path unless user_signed_in?
+    redirect_to jobs_path if params[:job_id].blank?
+
+    @job_id = params[:job_id]
+    @all_favorite_job.find_by(job_id: @job_id).destroy
+  end
+
+  private
+
+  def find_favorited_job
+    @all_favorite_job = current_user.user_jobs.where.not(favorited_at: nil)
+  end
+end

app/controllers/jobs_controller.rb

 class JobsController < ApplicationController
-  before_action :authenticate_user!, only: [:apply, :confirm_apply, :finish_apply, :applied_jobs]
+  before_action :authenticate_user!, only: [:apply, :confirm_apply, :finish_apply]
   before_action :find_user, only: :apply_available
   before_action :validate_city_industry, only: :index
+  before_action :find_applied_jobs, only: [:apply, :confirm_apply, :finish_apply]
 
   def index
     @search = params
@@ -42,8 +43,8 @@ class JobsController < ApplicationController
     if params[:commit] == "Edit"
       redirect_to apply_path(job_id: @job_id, params: confirm_apply_info_params)
     else
-      current_user.user_jobs.find_by(user_id: current_user.id, job_id: @job_id) ||
-      current_user.user_jobs.create!(user_id: current_user.id, job_id: @job_id, applied_at: Time.current)
+      @all_applied_jobs.find_by(job_id: @job_id) ||
+      @all_applied_jobs.create!(user_id: current_user.id, job_id: @job_id, applied_at: Time.current)
     end
   end
 
@@ -67,5 +68,8 @@ class JobsController < ApplicationController
     elsif params[:industry_id]
       redirect_to jobs_path unless Industry.find_by(id: params[:industry_id])
     end
+
+  def find_applied_jobs
+    @all_applied_jobs = current_user.user_jobs.where.not(applied_at: nil)
   end
 end

app/views/jobs/show.html.erb

@@ -31,7 +31,7 @@
 </div>
 
 <div class="job_detail_button">
-  <%= link_to "Favorite", "#", class: "btn btn-primary float-right" %>
+  <%= render "shared/favorite_btn" %>
   <% if user_signed_in? && @job.apply_available(current_user) %>
     <button type="button" class="btn btn-primary float-right mx-3" disabled>Apply</button>
   <% else %>

app/views/shared/_favorite_btn.html.erb

+<% if user_signed_in? %>
+  <%= link_to "Favorite", "#", class: "btn btn-primary float-right" %>
+<% else %>
+  <button type="button" class="btn btn-primary float-right" disabled>Favorite</button>
+<% end %>

app/views/shared/_unfavorite_btn.html.erb

+<% if user_signed_in? %>
+  <%= link_to "Unfavorite", "#", class: "btn btn-primary float-right" %>
+<% else %>
+  <button type="button" class="btn btn-primary float-right" disabled>Unfavorite</button>
+<% end %>

config/routes.rb

@@ -21,4 +21,7 @@ Rails.application.routes.draw do
     end
   end
   get "admin", to: "admins#index", as: :admin
+  resource :favorites, only: [:create, :destroy]
+  # post "favorite", to: "favorites#create"
+  # delete "unfavorite", to: "favorites#destroy"
 end