Changed Enumerations to use a Single Table Inheritance

* Added migrations to change Enumerations to an STI relationship
* Added TimeEntryActivity model (STI)
* Added DocumentCategory model (STI)
* Added IssuePriority model (STI)
* Added Enumeration#get_subclasses to get a list of the subclasses of Enumeration
* Changed Enumeration to use the STI type field instead of the opt field
* Changed Enumeration#opt to return the old opt values but with a deprecation warning.
* Removed Enumeration::OPTIONS
* Removed the dynamic named_scopes in favor of specific named_scopes.  Kept for
  compatibility reasons.
* Added Enumeration#default so each subclass can easily find it's default record.
* Fixed Enumeration#default to use the STI scoping with a fake default scope for finding Enumeration's default.
* Added a 'all' named scope for getting all records in order by position.
* Added Deprecation warnings to the old named_scopes in Enumerations.
* Moved various methods off of Enumeration and onto the concrete classes
* Changed the EnumerationsController to use types
* Updated the Enumeration list template
* Added has_many relationships to the Enumeration STI classes.
* Fixes for tests.

  #3007

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2777 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/enumerations_controller.rb

@@ -31,14 +31,19 @@ class EnumerationsController < ApplicationController
   end
 
   def new
-    @enumeration = Enumeration.new(:opt => params[:opt])
+    begin
+      @enumeration = params[:type].constantize.new
+    rescue NameError
+      @enumeration = Enumeration.new      
+    end
   end
 
   def create
     @enumeration = Enumeration.new(params[:enumeration])
+    @enumeration.type = params[:enumeration][:type]
     if @enumeration.save
       flash[:notice] = l(:notice_successful_create)
-      redirect_to :action => 'list', :opt => @enumeration.opt
+      redirect_to :action => 'list', :type => @enumeration.type
     else
       render :action => 'new'
     end
@@ -50,9 +55,10 @@ class EnumerationsController < ApplicationController
 
   def update
     @enumeration = Enumeration.find(params[:id])
+    @enumeration.type = params[:enumeration][:type] if params[:enumeration][:type]
     if @enumeration.update_attributes(params[:enumeration])
       flash[:notice] = l(:notice_successful_update)
-      redirect_to :action => 'list', :opt => @enumeration.opt
+      redirect_to :action => 'list', :type => @enumeration.type
     else
       render :action => 'edit'
     end
@@ -65,12 +71,12 @@ class EnumerationsController < ApplicationController
       @enumeration.destroy
       redirect_to :action => 'index'
     elsif params[:reassign_to_id]
-      if reassign_to = Enumeration.find_by_opt_and_id(@enumeration.opt, params[:reassign_to_id])
+      if reassign_to = Enumeration.find_by_type_and_id(@enumeration.type, params[:reassign_to_id])
         @enumeration.destroy(reassign_to)
         redirect_to :action => 'index'
       end
     end
-    @enumerations = Enumeration.values(@enumeration.opt) - [@enumeration]
+    @enumerations = Enumeration.find(:all, :conditions => ['type = (?)', @enumeration.type]) - [@enumeration]
   #rescue
   #  flash[:error] = 'Unable to delete enumeration'
   #  redirect_to :action => 'index'