discourse/app/mailers/rejection_mailer.rb

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require_dependency 'email/message_builder'
class RejectionMailer < ActionMailer::Base
include Email::BuildEmailHelper
DISALLOWED_TEMPLATE_ARGS = [:to,
:from,
:base_url,
:user_preferences_url,
:include_respond_instructions,
:html_override,
:add_unsubscribe_link,
:respond_instructions,
:style,
:body,
:post_id,
:topic_id,
:subject,
:template,
:allow_reply_by_email,
:private_reply,
:from_alias]
# Send an email rejection message.
#
# template - i18n key under system_messages
# message_from - Who to send the rejection messsage to
# template_args - arguments to pass to i18n for interpolation into the message
# Certain keys are disallowed in template_args to avoid confusing the
# BuildEmailHelper. You can see the list in DISALLOWED_TEMPLATE_ARGS.
def send_rejection(template, message_from, template_args)
if template_args.keys.any? { |k| DISALLOWED_TEMPLATE_ARGS.include? k }
raise ArgumentError.new('Reserved key in template arguments')
end
build_email(message_from, template_args.merge(template: "system_messages.#{template}"))
end
end