Append Logic for converted_name before save db

app/models/application_record.rb

 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
 
-  def convert_attribute
-    self.converted_name = normalize_attribute.mb_chars.normalize(:kd).gsub(/[Đđ]/, 'd').gsub(/[^\x00-\x7F]/,'').gsub(/[\W+]/,' ').downcase.to_s.split(' ').join('-')
+  def convert_attribute(val)
+    return '' if val.blank?
+    [val, rand(10000)] = normalize_attribute.mb_chars.normalize(:kd).gsub(/[Đđ]/, 'd').gsub(/[^\x00-\x7F]/,'').gsub(/[\W+]/,' ').downcase.to_s.split(' ').join('-')
   end
 end

app/models/city.rb

 class City < ApplicationRecord
-  before_save :convert_attribute
+  before_save :set_converted_name
+
   has_many :city_jobs
   has_many :jobs, through: :city_jobs
 
@@ -11,7 +12,7 @@ class City < ApplicationRecord
 
   private
 
-  def normalize_attribute
-    "#{name} #{rand(10000)}"
+  def set_converted_name
+    converted_name = convert_attribute(name)
   end
 end

app/models/company.rb

 class Company < ApplicationRecord
-  before_save :convert_attribute
+  before_save :set_converted_name
+
   has_many :jobs
 
   private
 
-  def normalize_attribute
-    "#{name} #{rand(10000)}"
+  def set_converted_name
+    converted_name = convert_attribute(name)
   end
 end

app/models/industry.rb

 class Industry < ApplicationRecord
-  before_save :convert_attribute
+  before_save :set_converted_name
+
   has_many :industry_jobs
   has_many :jobs, through: :industry_jobs
 
@@ -8,7 +9,7 @@ class Industry < ApplicationRecord
 
   private
 
-  def normalize_attribute
-    "#{name} #{rand(10000)}"
+  def set_converted_name
+    converted_name = convert_attribute(name)
   end
 end

app/models/job.rb

 class Job < ApplicationRecord
-  before_save :convert_attribute
+  before_save :set_converted_name
+
   belongs_to :company
   has_many :city_jobs
   has_many :cities, through: :city_jobs
@@ -26,8 +27,8 @@ class Job < ApplicationRecord
 
   private
 
-  def normalize_attribute
-    "#{title} #{rand(10000)}"
+  def set_converted_name
+    converted_name = convert_attribute(title)
   end
 end