doc/technical/archived_migrations/20170307120421_add_mailer_id_to_emails.rb
class AddMailerIdToEmails < ActiveRecord::Migration[5.0]
def change
add_reference :emails, :mailer, foreign_key: true
CrowdaiMailer.create!(id: 1, mailer: 'DeviseMandrillMailer')
CrowdaiMailer.create!(id: 2, mailer: 'LeaderboardNotificationMailer')
CrowdaiMailer.create!(id: 3, mailer: 'PostNotifictionMailer')
CrowdaiMailer.create!(id: 4, mailer: 'SubmissionGradedNotificationMailer')
CrowdaiMailer.create!(id: 5, mailer: 'SubmissionNotificationMailer')
end
end