Initial commit

db/migrate/20180516110336_improve_account_model.rb

@@ -0,0 +1,17 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+class ImproveAccountModel < ActiveRecord::Migration[4.2]
+  def change
+    change_column :accounts, :member_id, :integer, null: false
+    change_column :accounts, :currency_id, :integer, null: false
+    change_column_null :accounts, :balance, false
+    change_column_null :accounts, :locked, false
+    change_column_null :accounts, :created_at, false
+    change_column_null :accounts, :updated_at, false
+    change_column_default :accounts, :balance, 0
+    change_column_default :accounts, :locked, 0
+    remove_index :accounts, column: %i[member_id currency_id]
+    add_index :accounts, %i[currency_id member_id], unique: true
+  end
+end