Custom fields refactoring: most of code moved from controllers to models (using new module ActsAsCustomizable).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1592 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -28,13 +28,12 @@ class Issue < ActiveRecord::Base
   has_many :journals, :as => :journalized, :dependent => :destroy
   has_many :attachments, :as => :container, :dependent => :destroy
   has_many :time_entries, :dependent => :delete_all
-  has_many :custom_values, :dependent => :delete_all, :as => :customized
-  has_many :custom_fields, :through => :custom_values
   has_and_belongs_to_many :changesets, :order => "revision ASC"
   
   has_many :relations_from, :class_name => 'IssueRelation', :foreign_key => 'issue_from_id', :dependent => :delete_all
   has_many :relations_to, :class_name => 'IssueRelation', :foreign_key => 'issue_to_id', :dependent => :delete_all
   
+  acts_as_customizable
   acts_as_watchable
   acts_as_searchable :columns => ['subject', "#{table_name}.description"], :include => :project, :with => {:journal => :issue}
   acts_as_event :title => Proc.new {|o| "#{o.tracker.name} ##{o.id}: #{o.subject}"},
@@ -44,7 +43,6 @@ class Issue < ActiveRecord::Base
   validates_length_of :subject, :maximum => 255
   validates_inclusion_of :done_ratio, :in => 0..100
   validates_numericality_of :estimated_hours, :allow_nil => true
-  validates_associated :custom_values, :on => :update
 
   def after_initialize
     if new_record?
@@ -54,6 +52,11 @@ class Issue < ActiveRecord::Base
     end
   end
   
+  # Overrides Redmine::Acts::Customizable::InstanceMethods#available_custom_fields
+  def available_custom_fields
+    (project && tracker) ? project.all_issue_custom_fields.select {|c| tracker.custom_fields.include? c } : []
+  end
+  
   def copy_from(arg)
     issue = arg.is_a?(Issue) ? arg : Issue.find(arg)
     self.attributes = issue.attributes.dup
@@ -168,11 +171,6 @@ class Issue < ActiveRecord::Base
     end
   end
   
-  def custom_value_for(custom_field)
-    self.custom_values.each {|v| return v if v.custom_field_id == custom_field.id }
-    return nil
-  end
-  
   def init_journal(user, notes = "")
     @current_journal ||= Journal.new(:journalized => self, :user => user, :notes => notes)
     @issue_before_change = self.clone