Changed default in the database for the statemachine

app/models/merge_request_diff.rb

@@ -26,7 +26,7 @@ class MergeRequestDiff < ActiveRecord::Base
 
   delegate :target_branch, :source_branch, to: :merge_request, prefix: nil
 
-  state_machine :state, initial: :collected do
+  state_machine :state, initial: :empty do
     state :collected
     state :timeout
     state :overflow_commits_safe_size

db/migrate/20140414131055_change_state_to_allow_empty_merge_request_diffs.rb

+class ChangeStateToAllowEmptyMergeRequestDiffs < ActiveRecord::Migration
+  def up
+    change_column :merge_request_diffs, :state, :string, null: true, default: nil
+  end
+
+  def down
+    change_column :merge_request_diffs, :state, :string, null: false, default: "collected"
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20140407135544) do
+ActiveRecord::Schema.define(version: 20140414131055) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -109,7 +109,7 @@ ActiveRecord::Schema.define(version: 20140407135544) do
   add_index "keys", ["user_id"], name: "index_keys_on_user_id", using: :btree
 
   create_table "merge_request_diffs", force: true do |t|
-    t.string   "state",            default: "collected", null: false
+    t.string   "state"
     t.text     "st_commits"
     t.text     "st_diffs"
     t.integer  "merge_request_id", null: false