Question

I would like the invitations for my app to come from the inviter instead of a system email address. How can I override the config.mailer_sender from devise.rb?

I have this in my mailer and have confirmed that it is getting called, but it does not override the :from. Note: it is a private method, I tried it as a public method with no effect.

private

def headers_for(action)
  if action == :invitation_instructions
    headers = {
      :subject       => "#{resource.invited_by.full_name} has invited you to join iTourSmart",
      :from          => resource.invited_by.email,
      :to            => resource.email,
      :template_path => template_paths
    }
  else
    headers = {
      :from          => mailer_sender(devise_mapping),
      :to            => resource.email,
      :template_path => template_paths
    }
  end

  if resource.respond_to?(:headers_for)
    headers.merge!(resource.headers_for(action))
  end

  unless headers.key?(:reply_to)
    headers[:reply_to] = headers[:from]
  end

  headers
end

Answer 1

Look at my answer to a similar question, it might help.

Edit: so it seems that you need to define a public headers_for method in your resource class.

Solution: Put some version of this method in User.rb, make sure it’s public.

def headers_for(action)
  action_string = action.to_s
  case action_string
  when "invitation" || "invitation_instructions"
    {:from => '[e-mail]'}
  else
    {}
  end
end

You have to return a hash in because Devise::Mailer will try to merge the hash values.