db/migrate/20160502152346_create_notifications.rb
class CreateNotifications < ActiveRecord::Migration
def change
create_table :notifications do |t|
t.references :user, index: true, limit: 8
t.references :event, index: true, limit: 8
t.string :system_name, limit: 1000
t.string :state, limit: 20
t.timestamps
end
end
end