refactor code

app/controllers/favorite_jobs_controller.rb

@@ -10,10 +10,8 @@ class FavoriteJobsController < ApplicationController
     favorite = favorite_query.find_favorite(job_params, current_user)
     if favorite.nil?
       FavoriteJob.create(job: @job, user: current_user)
-      @favorite_exists = true
     else
       favorite.destroy
-      @favorite_exists = false
     end
     respond_to do |format|
       format.html { redirect_to new_user_session_path, alert: 'You need to sign in or sign up before continuing.' }

app/controllers/jobs_controller.rb

@@ -19,7 +19,7 @@ class JobsController < ApplicationController
 
   def show
     @job = Job.find_by(slug: params[:job_slug]) or not_found
-    check_favorite_exists(@job)
+    favorite_text(@job)
   end
 
   private

app/helpers/application_helper.rb

@@ -25,11 +25,7 @@ module ApplicationHelper
     render file: "#{Rails.root}/public/404.html", status: :not_found
   end
 
-  def favorite_text
-    @favorite_exists ? 'Unfavorite' : 'Favorite'
-  end
-
-  def check_favorite_exists(input)
-    @favorite_exists = !FavoriteJob.find_by(job: input, user: current_user).nil?
+  def favorite_text(job)
+    FavoriteJob.find_by(job: job, user: current_user).present? ? 'Unfavorite' : 'Favorite'
   end
 end

app/views/favorite_jobs/_favorite.slim

+= link_to favorite_text(job), favorite_update_path(job_id: job.id), id: "favorite-#{job.id}", remote: user_signed_in?, class: "btn btn-outline-primary btn-lg"
\ No newline at end of file

app/views/favorite_jobs/update.js.slim

 | $("#favorite-#{@job.id}").text("
-= favorite_text
+= favorite_text(@job)
 | ");
\ No newline at end of file

app/views/jobs/index.html.slim

@@ -12,7 +12,6 @@
     = paginate @jobs, window: 1
   .job-list
     - @jobs.each do |job| 
-      = hidden_field :status, check_favorite_exists(job)
       .row.bg-white
         .col-10.p-3.card-body.text-dark
           h5.mb-1
@@ -29,10 +28,7 @@
           p.mb-1
             = truncate(job.overview, length: 250)
         .col-sm-2.p-3.favourite
-          -if user_signed_in?
-            = link_to favorite_text, favorite_update_path(job_id: job.id), id: "favorite-#{job.id}", remote: true, class: "btn btn-outline-primary btn-lg"
-          -else
-            = link_to favorite_text, favorite_update_path(job_id: job.id), class: "btn btn-outline-primary btn-lg"
+          = render partial: "favorite_jobs/favorite", locals: {job: job}
   h6.offset-md-4.px
     = page_entries_info @jobs
   h6.offset-md-4

app/views/jobs/show.html.slim

@@ -51,7 +51,4 @@
   .col.text-end
     = link_to "Apply this Job", apply_path(job_id: @job.id), class: "btn btn-outline-primary btn-lg"
   .col.text-start 
-    -if user_signed_in?
-      = link_to favorite_text, favorite_update_path(job_id: @job.id), id: "favorite-#{@job.id}", remote: true, class: "btn btn-outline-primary btn-lg"
-    -else
-      = link_to favorite_text, favorite_update_path(job_id: @job.id), class: "btn btn-outline-primary btn-lg"
+    = render partial: "favorite_jobs/favorite", locals: {job: @job}