Help redirecting to the same page

captaffy · February 20, 2009, 5:26pm

I have a login controller and a link so I can login my app.
I would like to have something to come back to the page where I clicked
that link. So, when I click the link I go to the login page and after I
would like to return to the page where I clicked the link.
I have uses request_uri in other apps, but I need something different
now and be able to use it all around the web.

captaffy · February 20, 2009, 7:44pm

Hi John,

On Fri, 2009-02-20 at 17:26 +0100, John S. wrote:

I have a login controller and a link so I can login my app.
I would like to have something to come back to the page where I clicked
that link. So, when I click the link I go to the login page and after I
would like to return to the page where I clicked the link.
I have uses request_uri in other apps, but I need something different
now and be able to use it all around the web.

Depending on the complexity of your authentication processing, you may
be able to do something as simple as:

redirect_to :back

I’m not sure what you mean by ‘need something different now’ wrt
request_uri. An alternative to the above would be to capture the source
of the request in your login controller method and store it in the
session for future use.

There are other alternatives, of course. Maybe if you say more about
what you mean by ‘be able to use it all around the web’ you’ll get some
more helpful responses.

Best regards,
Bill

captaffy · February 20, 2009, 11:21pm

On Feb 20, 2009, at 1:43 PM, bill walton wrote:

now and be able to use it all around the web.
session for future use.

There are other alternatives, of course. Maybe if you say more about
what you mean by ‘be able to use it all around the web’ you’ll get
some
more helpful responses.

Best regards,
Bill

Note that if you do use :back, you need to rescue RedirectBackError in
case there is no HTTP_REFERER to go back to. It might be simpler to
look at what redirect_to does with :back and do that yourself
(exercise for the reader

begin
redirect_to :back
rescue RedirectBackError
redirect_to home_url # or something appropriate for your app.
end

-Rob

Rob B. http://agileconsultingllc.com
[email protected]

captaffy · February 24, 2009, 11:05pm

You’ll probably want to adopt an approach similar to restful-
authetication’s method:

def store_location
session[:return_to] = request.request_uri
end

(call this from your action that shows users the login page - see

github.com

technoweenie/restful-authentication/blob/5799593a28bb88e98b8cfe32d2f207c753a2bd9b/generators/authenticated/templates/authenticated_system.rb

module AuthenticatedSystem
  protected
    # Returns true or false if the <%= file_name %> is logged in.
    # Preloads @current_<%= file_name %> with the <%= file_name %> model if they're logged in.
    def logged_in?
      !!current_<%= file_name %>
    end

    # Accesses the current <%= file_name %> from the session.
    # Future calls avoid the database because nil is not equal to false.
    def current_<%= file_name %>
      @current_<%= file_name %> ||= (login_from_session || login_from_basic_auth || login_from_cookie) unless @current_<%= file_name %> == false
    end

    # Store the given <%= file_name %> id in the session.
    def current_<%= file_name %>=(new_<%= file_name %>)
      session[:<%= file_name %>_id] = new_<%= file_name %> ? new_<%= file_name %>.id : nil
      @current_<%= file_name %> = new_<%= file_name %> || false
    end

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for details)

–Matt J.

On Feb 24, 3:08 am, John S. [email protected]

captaffy · February 24, 2009, 9:08am

Thanks, but I can not do redirect_to :back, because it redirects to the
login page. I’ll need something different. One possibility is to use a
session variables for my controller and method, but the problem is that
sometimes I need also and id, like ‘posts/11’. I would like something
more general. I would like to be able to save all the url in a session
variable and then be able to redirect back to it. Is it possible?