Trouble setting the app's root_url to an url setup through devise

[Asa]

I'm having trouble when I try to setup the root url to be the login
page. Since there's a named route - new_user_session, I would think I
could setup my root like so: map.root :new_user_session. When I try
that I get the following backtrace, any ideas?

NoMethodError in SessionsController#new

You have a nil object when you didn't expect it!
The error occurred while evaluating nil.to_sym

devise-0.6.1/lib/devise/mapping.rb:32:in `find_by_path'
devise-0.6.1/lib/devise/mapping.rb:30:in `each_value'
devise-0.6.1/lib/devise/mapping.rb:30:in `find_by_path'
devise-0.6.1/lib/devise/controllers/helpers.rb:38:in `devise_mapping'
devise-0.6.1/lib/devise/controllers/helpers.rb:50:in
`is_devise_resource?'

Thanks for your help!

[José Valim]

It won't work because Devise extracts the scope to be logged in from the url path. So "/" won't work, because it expects "/users/something". This logic is contained in find_by_path, so an easy fix would do something like this in an initializer:

class Devise::Mapping

  class << self

    alias_method(:orig_find_by_path, :find_by_path)

    def find_by_path(path)

      if path == "/"

        Devise.mappings[:user]

      else

        orig_find_by_path(path)

      end

    end

  end

end

 

Or even changing in SessionsController:

class SessionsController

  prepend_before_filter :set_mapping_from_root

  protected

  def set_mapping_from_root

    @devise_mapping = Devise.mappings[:user] if request.path == "/"

  end

end

--
José Valim

Director of Engineering - Plataforma Tecnologia
http://blog.plataformatec.com.br/

[trung]

This is very simple.

Add this to your controller.

protected
def devise_mapping
@devise_mapping ||= Devise.mappings[:user]
end

[trung]

also
def is_devise_resource?
true
end

[lancecarlson]

Adding Trung's suggestions worked for me! Thanks!