Redirect to original destination after login?

This is a variation on an "Occasionally asked question" in the README:

Redirect from /original/path to /saml/login?destination=original/path

Note that "original destination" has no special meaning to the samlauth module.
The module sits on /saml/login, and with "original destination", I assume you mean the path that the user visited previously, before redirecting to /saml/login. This "original path" is equivalent to any other path you want to redirect to after logging in. Which you do with saml/login?destination=any/path

Thanks roderik!
That solves my issue.

Hello,

I have the same issue as g_miric, but not sure how they solved the issue given your response.

I've successfully used the login redirect url field to route users to a specific path after logging in, but I'm unsure how to make this dynamic and route to the page they were trying to visit.

For example:

1.user visits www.example.com/a
2. access restricted and presented with login
3. user successfully logs in and continues to www.example.com/a

Thanks for helping me understand!

It's about your point 2

2. access restricted and presented with login

I am assuming something (outside of the samlauth module) is redirecting to /saml/login, for that purpose.

It should be redirecting to /saml/login?destination=a instead.

Thank you for wording that another way. This makes a lot more sense now!

In our case, we have a custom login block with the button pointed to /saml/login

My next task will be to figure out how to make the button dynamic based on the current page so the button points to

/saml/login?destination=a

Appreciate the help!

@bellsworth, you can use the hook_link_alter() for adding the language code as destination query parameter:

/**
 * Implements hook_link_alter().
 */
function module_name_link_alter(array &$variables): void {
  // Add language code as destination query string to SAML login menu link for returning user to correct language when path prefix language detection is used.
  $url = $variables['url']->toString();
  if ($url == '/saml/login') {
    $language = \Drupal::languageManager()->getCurrentLanguage()->getId();
    $variables['options']['query']['destination'] = $language;
  }
}