app/helpers/application_helper/button/miq_alert_delete.rb
class ApplicationHelper::Button::MiqAlertDelete < ApplicationHelper::Button::Basic
needs :@record
def disabled?
@error_message = _("Alerts referenced by Actions can not be deleted") unless @record.owning_miq_actions.empty?
@error_message = _("Alerts that belong to Alert Profiles can not be deleted") unless @record.memberof.empty?
@error_message.present?
end
end