Namespace model added. Migration to convert exit project/groups

db/migrate/20121122145155_convert_group_to_namespace.rb

@@ -0,0 +1,13 @@
+class ConvertGroupToNamespace < ActiveRecord::Migration
+  def up
+    rename_table 'groups', 'namespaces'
+    add_column :namespaces, :type, :string, null: true
+
+    # Migrate old groups
+    Namespace.update_all(type: 'Group')
+  end
+
+  def down
+    raise 'Rollback is not allowed'
+  end
+end

db/migrate/20121122150932_add_namespace_id_to_project.rb

@@ -0,0 +1,5 @@
+class AddNamespaceIdToProject < ActiveRecord::Migration
+  def change
+    rename_column :projects, :group_id, :namespace_id
+  end
+end