Fixes 'follows' relation validation.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3191 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue_relation.rb

@@ -33,14 +33,12 @@ class IssueRelation < ActiveRecord::Base
           }.freeze
   
   validates_presence_of :issue_from, :issue_to, :relation_type
-  validates_inclusion_of :relation_type, :in => [TYPE_RELATES, TYPE_DUPLICATES, TYPE_BLOCKS, TYPE_PRECEDES]
+  validates_inclusion_of :relation_type, :in => TYPES.keys
   validates_numericality_of :delay, :allow_nil => true
   validates_uniqueness_of :issue_to_id, :scope => :issue_from_id
   
   attr_protected :issue_from_id, :issue_to_id
   
-  before_validation :reverse_if_needed
-  
   def validate
     if issue_from && issue_to
       errors.add :issue_to_id, :invalid if issue_from_id == issue_to_id
@@ -58,6 +56,8 @@ class IssueRelation < ActiveRecord::Base
   end
   
   def before_save
+    reverse_if_needed
+    
     if TYPE_PRECEDES == relation_type
       self.delay ||= 0
     else