Hexadecimal color changed to capital letters

The default colors in event_types and difficulty levels are in capital letters and the ones that comes from the color picker were not. Now colors are capitalized before saving the track, level or type. A rake task has also been created to capitalize color from old tracks, levels or types.

app/models/difficulty_level.rb

@@ -3,5 +3,13 @@ class DifficultyLevel < ActiveRecord::Base
   has_many :events, dependent: :nullify
 
   validates :title, presence: true
-  validates :color, format: /\A#[0-9a-fA-F]{6}\z/
+  validates :color, format: /\A#[0-9A-F]{6}\z/
+
+  before_validation :capitalize_color
+
+  private
+
+  def capitalize_color
+    self.color = color.upcase if color.present?
+  end
 end

app/models/event.rb

@@ -115,7 +115,7 @@ class Event < ActiveRecord::Base
     json = super(options)
 
     json[:room_guid] = room.try(:guid)
-    json[:track_color] = track.try(:color) || '#ffffff'
+    json[:track_color] = track.try(:color) || '#FFFFFF'
     json[:length] = event_type.try(:length) || 25
 
     json

app/models/event_type.rb

@@ -7,7 +7,9 @@ class EventType < ActiveRecord::Base
   validates :minimum_abstract_length, presence: true
   validates :maximum_abstract_length, presence: true
   validate :length_step
-  validates :color, format: /\A#[0-9a-fA-F]{6}\z/
+  validates :color, format: /\A#[0-9A-F]{6}\z/
+
+  before_validation :capitalize_color
 
   alias_attribute :name, :title
 
@@ -22,4 +24,8 @@ class EventType < ActiveRecord::Base
   def length_step
     errors.add(:length, "must be multiple of #{LENGTH_STEP}") if length % LENGTH_STEP != 0
   end
+
+  def capitalize_color
+    self.color = color.upcase if color.present?
+  end
 end

app/models/track.rb

@@ -4,7 +4,9 @@ class Track < ActiveRecord::Base
 
   before_create :generate_guid
   validates :name, presence: true
-  validates :color, format: /\A#[0-9a-fA-F]{6}\z/
+  validates :color, format: /\A#[0-9A-F]{6}\z/
+
+  before_validation :capitalize_color
 
   private
 
@@ -15,4 +17,8 @@ class Track < ActiveRecord::Base
 #     end while Person.where(:guid => guid).exists?
     self.guid = guid
   end
+
+  def capitalize_color
+    self.color = color.upcase if color.present?
+  end
 end