Authlogic: rendering the login form as a partial on every page of my site

Rails
1

Hi,

I’m trying to setup the Authlogic gem. I’ve followed this tutorial:
(because I’m using Rails 3)

All of this works. But now I’d like to render the login form as a
partial on every page of my site.

  1. I’ve rendered the partial in my application.html.erb file as
    followed:

<%= render :partial => “user_sessions/form” %>

  1. When I start my server and try rendering my index view of my home
    controller, I get the following error:

undefined method `model_name’ for NilClass:Class
Extracted source (around line #1):
1: <%= form_for(@user_session) do |f| %>
2: <% if @user_session.errors.any? %>
3:


4:

<%= pluralize(@user_session.errors.count, “error”) %>
prohibited this user_session from being saved:

  1. I figured out I had to make a new @user_session var in the action
    method of my controller for every view I’d like to render my login
    form partial on.

  2. I’ve put @user_session = UserSession.new in the “new”-action-method
    in my home controller and so my index view rendered fine. But now I’d
    like to render my login form on every page of my site.

Is there a way to set the @user_session for every action? Like in the
application_controller? How would you do that?

Thank you,
Mathew

2

On Sat, Oct 16, 2010 at 8:33 AM, mattyh88 [email protected]
wrote:

followed:
3:

Is there a way to set the @user_session for every action? Like in the
application_controller? How would you do that?

You should able to do this in the application_controller:

before_filter :new_user_session

private

def new_user_session
@new_user_session = UserSession.new
end

Try that, should then have the @new_user_session available to you since
all
controllers inherit from application controller.

3

thanks!
works like a charm :slight_smile:

4

mattyh88 <mathew.hucks@…> writes:

http://www.logansbailey.com/2010/10/06/how-to-setup-authlogic-in-rail…
controller, I get the following error:
method of my controller for every view I’d like to render my login

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I am trying to do the same thing. I followed the same tutorial, added
the

@user_session = UserSession.new

(tried both the home controller and application controller)

but I am still getting

ActionView::Template::Error (undefined method model_name' for NilClass:Class): 1: = form_for @user_session do |f| 2: -if @user_session.errors.any? 3: #error_explanation 4: %h2= "#{pluralize(@user_session.errors.count, "error")} prohibited this user_session from being saved:" app/views/user_sessions/_form.html.haml:1:in _app_views_user_sessions__form_html_haml__892280163_96031200’
app/views/home/index.html.haml:6:in
`_app_views_home_index_html_haml__1051594895_96219820’

Any idea how to solve this? Everything else works fine, as described in
the
tutorial. I am just unable to render the partial user_sessions/form
from
anywhere else, i.e. it’s only working from user_sessions/new.

I’d appreciate any help, I’ve been struggling with this for a while and
cannot
figure it out.