Fixes tracker_id and custom_field_values assignment order for issues (#4353).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3139 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -142,8 +142,22 @@ class Issue < ActiveRecord::Base
   def tracker_id=(tid)
     self.tracker = nil
     write_attribute(:tracker_id, tid)
+    result = write_attribute(:tracker_id, tid)
+    @custom_field_values = nil
+    result
   end
   
+  # Overrides attributes= so that tracker_id gets assigned first
+  def attributes_with_tracker_first=(new_attributes, *args)
+    return if new_attributes.nil?
+    new_tracker_id = new_attributes['tracker_id'] || new_attributes[:tracker_id]
+    if new_tracker_id
+      self.tracker_id = new_tracker_id
+    end
+    self.attributes_without_tracker_first = new_attributes, *args
+  end
+  alias_method_chain :attributes=, :tracker_first
+  
   def estimated_hours=(h)
     write_attribute :estimated_hours, (h.is_a?(String) ? h.to_hours : h)
   end