Feature/rails 5 comptability (#3)

Rails 5 comptability

Gemfile

@@ -8,4 +8,4 @@ gem 'rake'
 gem 'mysql2'
 gem 'rspec'
 gem 'byebug'
-gem 'activerecord', '~> 4.2.0'
+gem 'activerecord', '~> 5.2.3'

lib/louisville/extensions/history.rb

@@ -27,8 +27,8 @@ def self.included(base)
  extend ::Louisville::Extensions::History::ClassMethods
 
  # If our slug has changed we should manage the history.
- after_save :delete_matching_historical_slug, :if => :louisville_slug_changed?
- after_save :generate_historical_slug, :if => :louisville_slug_changed?
+ after_save :delete_matching_historical_slug, if: :louisville_slug_previously_changed?
+ after_save :generate_historical_slug, if: :louisville_slug_previously_changed?
 
  before_destroy :destroy_historical_slugs!
  end
@@ -63,7 +63,7 @@ def delete_matching_historical_slug
 
  # Then we generate a new historical slug for the previous value (if there is one).
  def generate_historical_slug
- previous_value = self.send("#{louisville_config[:column]}_was")
+ previous_value = self.previous_changes[louisville_config[:column]].try(:[], 0)
 
  return unless previous_value
 

lib/louisville/slugger.rb

@@ -53,6 +53,9 @@ def louisville_slug_changed?
  self.send("#{louisville_config[:column]}_changed?")
  end
 
+ def louisville_slug_previously_changed?
+ self.send("#{louisville_config[:column]}_previously_changed?")
+ end
 
  def apply_louisville_slug
  value = extract_louisville_slug_value_from_field

lib/louisville/version.rb

@@ -3,7 +3,7 @@ module VERSION
 
  MAJOR = 0
  MINOR = 0
- PATCH = 4
+ PATCH = 6
  PRE = nil
 
  def self.to_s

spec/spec_helper.rb

@@ -7,6 +7,7 @@
 
 require 'active_record'
 require 'louisville'
+require 'yaml'
 
 begin
  require 'byebug'