Accessing Devise Helper methods inside cell controllers and views

[bhavinkamani]

Hi,

I am using Devise as authentication plugin. Since login box is common
across all my pages, I have extracted that out as a cell. However, I
am getting errors while accessing devise helper methods such as
user_signed_in? etc. It is giving me undefined method error. Based on
the last post, I tried inserting "include
Devise::Controllers::Helpers". It still is giving me errors.
Here's the cell controller and the view code

app/cells/authenticate_cell.rb

class AuthenticateCell < Cell::Rails 
    include Devise::Controllers::Helpers 
    def login 
      @user = User.new 
      render 
    end 
end 

app/cells/authenticate/login.html.rb

<div class="container login_info"> 
  <% if user_signed_in? %> 
    Signed in as <%= current_user.email %>. Not you? 
    <%= link_to "Sign out", destroy_user_session_path %> 
  <% else %> 
  <%= form_for(resource, :as => resource_name, :url => 
session_path(resource_name)) do |f| %> 
    <p><%= f.label :email %><br /> 
    <%= f.email_field :email %></p> 
    <p><%= f.label :password %><br /> 
    <%= f.password_field :password %></p> 
    <% if devise_mapping.rememberable? -%> 
      <p><%= f.check_box :remember_me %> <%= f.label :remember_me %></ 
p> 
    <% end -%> 
    <p><%= f.submit "Sign in" %></p> 
    <% end %> 
  <% end %> 
</div> 

Thanks in advance.

[mixr]

i have the same problems in a rails 3 app and just use signed_in?(:user) for the moment.

when i tried to reproduce the problem in a blank rails 3 app, everything worked fine just by including "include Devise::Controllers::Helpers" in the Cell.

i have no idea right now which part of my app-setup is responsible for this.

[bhavinkamani]

Thanks for your inputs. While signed_in?(:user) seems to be working fine. I am getting stuck with resource_name while inserting login form inside cell view. I have included Devise::Controllers::Helpers in the cell. I am trying to keep the view code as close to devise generated view code as possible. Hence I am not directly using user model.

Did you happen to face that problem?

[bhavinkamani]

Apart from "include Devise::Controllers::Helpers", inserting Devise::Controllers::Helpers.define_helpers(User) helps me access rest of the devise helper methods. Not sure if this is the best way or the cleaner way to access devise helper methods.

[apotonick]

I got it working by calling

helper_method :current_user

and that's what José recommended, too!

[bhavinkamani]

Thanks it works great... looks much cleaner too..

[mixr]

hey,

did you try with a fresh rails 3 app? it's working without any extras, just include
include Devise::Controllers::Helpers
you can try the example app here: https://github.com/mixr/cells_devise

[bhavinkamani]

Hi,

Yep I tried and yes it indeed works without any additional line... Its kind of strange because now when I run my app after removing "helper_method :current_user" its recognizing user_signed_in? method. I have still not figured out why it was giving me error earlier. But good news is that it now works with one line code and thats 50% improvement over 2 lines :-) Thanks a ton.

[fsmanuel]

thax!
class TransactionWidget < Apotomo::Widget
include Devise::Controllers::Helpers

helper_method :current_user

did the trick!

[johanbaaij]

Hi, i'm trying the following:

app/cells/main_menu_cell.rb

class MainMenuCell < Cell::Rails
    include Devise::Controllers::Helpers
    helper_method :current_user

    def display
        render
    end
end

display.html.haml

- if user_signed_in?
    %li
        = link_to 'Logout', destroy_user_session_path, :method=>'delete'
- else
    %li
        = link_to 'Login', new_user_session_path

But i'm getting a undefined method `user_signed_in?'

What could I be doing wrong?
Cheers!

Edit:

duh. I get it :). Had to use
helper_method :user_signed_in?