Migrations for convertion merge_status added

db/migrate/20130220124204_add_new_merge_status_to_merge_request.rb

+class AddNewMergeStatusToMergeRequest < ActiveRecord::Migration
+  def change
+    add_column :merge_requests, :new_merge_status, :string
+  end
+end

db/migrate/20130220125544_convert_merge_status_in_merge_request.rb

+class ConvertMergeStatusInMergeRequest < ActiveRecord::Migration
+  def up
+    MergeRequest.transaction do
+      MergeRequest.where(merge_status: 1).update_all("new_merge_status = 'unchecked'")
+      MergeRequest.where(merge_status: 2).update_all("new_merge_status = 'can_be_merged'")
+      MergeRequest.where(merge_status: 3).update_all("new_merge_status = 'cannot_be_merged'")
+    end
+  end
+
+  def down
+    MergeRequest.transaction do
+      MergeRequest.where(new_merge_status: :unchecked).update_all("merge_status = 1")
+      MergeRequest.where(new_merge_status: :can_be_merged).update_all("merge_status = 2")
+      MergeRequest.where(new_merge_status: :cannot_be_merged).update_all("merge_status = 3")
+    end
+  end
+end

db/migrate/20130220125545_remove_merge_status_from_merge_request.rb

+class RemoveMergeStatusFromMergeRequest < ActiveRecord::Migration
+  def up
+    remove_column :merge_requests, :merge_status
+  end
+
+  def down
+    add_column :merge_requests, :merge_status, :integer
+  end
+end

db/migrate/20130220133245_rename_new_merge_status_to_merge_status_in_milestone.rb

+class RenameNewMergeStatusToMergeStatusInMilestone < ActiveRecord::Migration
+  def change
+    rename_column :merge_requests, :new_merge_status, :merge_status
+  end
+end