ActiveAdmin: how to leave user password unchanged?

Question

I am using ActiveAdmin as my administration backend in my rails app. Basically, I have an admin_user and a user model.

When I create a new user from an admin account, I specify an email and a password, that is ok.

Let's say I then want to modify the user's email but not the password... it seems this cannot be done as the password field cannot be blank when updating a user.

Is there a configuration somewhere that would consider that the password is unchanged is the fields (password and password_confirmation) are left blank while updating a user?

Answer 1

You don't really need to mess at all with Devise's registration controller, you can just ignore empty password fields inside ActiveAdmin's resource controller:

ActiveAdmin.register User do
  controller do

    def update
      model = :user

      if params[model][:password].blank?
        %w(password password_confirmation).each { |p| params[model].delete(p) }
      end

      super
    end
  end
end