Question

Using Drupal 7 I am adding js using drupal_add_js from within hook_user_login.

After adding the js I can call drupal_get_js() and I can see that my js has been added, but when the page is loading the js has gone.

My code is:

function popups_user_login(&$edit, $account) {
    $js = 'some inline js here';
    drupal_add_js($js, array('type'=>'inline', 'weight'=>1));
    drupal_add_js(drupal_get_path('module', 'popups').'/popups.js', array('weight'=>2));
}

The aim of the module is to create a popup once the user has logged in if certain criteria are met.

There is a similar question on drupal.org just here.

Can anyone tell me what is going on here?

(I’ve tried this on 2 separate Drupal 7 installs and have experienced the same problem on both sites)

Answer 1

Like Clive said this was due to a redirect happening directly after login.
This can be checked by installing Devel and turning on “Display redirection page” on the Devel settings page.

The solution is to set a session variable in hook_user_login (which in my case contained the nids of the popups I want to display), which can then be read in hook_page_alter and add the necessary JS added at this point.