CodeIgniter: Dynamic post-login redirection?

I'm building a basic CodeIgniter site that requires a login before you can access any of the site.

If a user visits some site url, something like this:

http://www.mysite.com/project/detail/2049

AND they are current logged out, I have it set to automatically kick them back to the login page.

My question is, a开发者_高级运维fter they login, what is the best way to redirect them to the original URL they typed in, instead of say, redirecting them to the websites homepage?

I was thinking maybe, dynamically create the URL as a hidden form element in the login form and redirect there upon a successful login... What do you guys think? Is there a better/best practice for this type of dynamic post-login redirection?

When they hit the restricted page record the uri and set it as session data with

this->session->set_userdata('redirect', 'page/uri/here');

then redirect them to the login / register

after they login check to see if 'redirect' is present with

if($this->session->userdata('redirect'))
{
    redirect($this->session->userdata('redirect'));
}

if it doesn't then take them wherever you normally take them after a login

when attempt to access is intercepted:

redirect('/public/login/r'.$this->uri->uri_string());

so in your case, after redirection the url might look like this:

http://www.example.com/public/login/r/project/detail/2049

if the login is successful

$uri = $this->uri->uri_string();
$redirect = substr($uri, strpos($uri, '/r/')+2);
redirect($redirect);

will redirect to the original resource.

(and no, the +2 should not be +3)

Why dont you create a session value upon login and then verify it on each page necessary to secure?

Build it into a library, so you can call the following:

$this->mylibrary->login($user);

and

$this->mylibrary->is_logged_in($user); on top of each page and automatically redirect visitors to your main site.

I am using flashdata to redirect.

this->session->set_flashdata('redirect_url', 'page/uri/here');

after they login check to see if 'redirect_url' is present with

if($this->session->flashdata('redirect_url'))
{
    redirect(base_url().$this->session->flashdata('redirect_url')));
}

Hope this help