Fix slug

app/models/industry.rb

@@ -8,11 +8,11 @@ class Industry < ApplicationRecord
 
   has_and_belongs_to_many :jobs
 
-  before_save :add_slug
+  before_save :add_slug, unless: :slug
 
   private
 
   def add_slug
-    self.slug = "#{self.id}-#{self.to_slug(self.name)}"
+    self.slug = "#{self.to_slug(self.name)}-#{Time.now.to_i}#{rand(10000)}"
   end
 end

app/models/job.rb

 class Job < ApplicationRecord
   NUMBER_LATEST_JOB = 6
+  WORDS_SHORT_DESCRIPTION = 250
 
   belongs_to :company
   has_many :applied_jobs

app/models/location.rb

@@ -13,11 +13,11 @@ class Location < ApplicationRecord
   has_many :locations_jobs
   has_many :jobs, through: :locations_jobs
 
-  before_save :add_slug
+  before_save :add_slug, unless: :slug
 
   private
 
   def add_slug
-    self.slug = "#{self.id}-#{self.to_slug(self.city)}"
+    self.slug = "#{self.to_slug(self.city)}-#{Time.now.to_i}#{rand(10000)}"
   end
 end

app/views/jobs/_job.html.erb

@@ -9,7 +9,7 @@
       <% end %>
     </p>
     <p><strong>Salary: </strong><%= job.salary %></p>
-    <p class='card-text'><%= strip_tags(job.description).truncate(250) %></p>
+    <p class='card-text'><%= strip_tags(job.description).truncate(Job::WORDS_SHORT_DESCRIPTION) %></p>
   </div>
   <div class='btn-favorite p-2'>
     <%= link_to 'Favorite', '#', class: 'btn btn-outline-danger btn-lg' %>

lib/tasks/create_slug.rake

@@ -2,14 +2,14 @@ namespace :create_slug do
   desc 'Create slug model Location'
   task locations: :environment do
     Location.all.each do |location|
-      location.update_attributes(slug: "")
+      location.update_attributes(slug: "#{location.to_slug(location.city)}-#{Time.now.to_i}#{rand(10000)}")
     end
   end
 
   desc 'Create slug model Industry' 
   task industries: :environment do
     Industry.all.each do |industry|
-      industry.update_attributes(slug: "")
+      industry.update_attributes(slug: "#{industry.to_slug(industry.name)}-#{Time.now.to_i}#{rand(10000)}")
     end
   end