Class: ActionMailer::Base

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# File 'lib/mail_engine/action_mailer_patch.rb', line 5

def mail(headers={}, &block)
  # order by latest uploaded, for get the latest updated 'subject'
  current_template = MailEngine::MailTemplate.where(:path => "#{controller_path}/#{action_name}", :locale => I18n.locale, :partial => false).order("updated_at desc").first
  headers[:subject] = current_template.subject if headers[:subject].blank? && current_template.present?
  headers[:message_id] = "#{controller_path}/#{action_name}"

  # Add sendgrid header before sending mail.
  # Why here but not add to default_params of action_mailer? because the receiver email [:to] only can get here.
  if self.sendgrid_config
    self.sendgrid_config.add_to headers[:to]
    origin_mail(headers.merge(self.sendgrid_config.to_hash), &block)
  else
    origin_mail(headers, &block)
  end
end