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I am at wits' end. I have a clean install of Drupal 7.28 and a custom module with the following two hooks:

/**
 * Implements hook_form_alter().
 * /
function mymodule_form_alter(&$form, &$form_state, $form_id) {
  dpm($form_state, 'form_alter');
}

/**
 * Implements hook_form_BASE_FORM_ID_alter().
 * /
function mymodule_form_node_form_alter(&$form, &$form_state, $form_id) {
  dpm($form_state, 'BASE_FORM_ID_alter');
}

And that is all there currently is in the custom module.

I have verified that the the base_form_id for the Article node form is node_form, by printing it out (using dpm($form_state). This is what is printed:

base_form_id (String, 9 characters ) node_form

And yes, I have cleared the cache (I've even restarted apache and rebooted the server).

I believe my code is identical to what is shown in numerous tutorials about how to use hook_form_BASE_FORM_ID_alter().

Still, when I open the form to create an article, the first hook (hook_form_alter()) fires, and the second (hook_form_BASE_FORM_ID_alter()) does not.

This hook is in 54 functions in the core, so it is very unlikely that it just does not work.

As I said, I am at wits' end.

Has anyone a suggestion for what to try next?

  • Strange, I am trying your code and I am receiving output from mymodule_form_node_form_alter(). – undersound Jul 6 '14 at 21:04
  • Thanks! That at least confirms that it should work and that no magic is necessary. There is obviously some quirk somewhere in my site. Starting again with a squeaky-clean install. – Free Radical Jul 6 '14 at 21:10
  • Not sure if relevant but I while copying your code I did received a warning. Warning: Unterminated comment, but perhaps that sneaked in while placing the code in the question. – undersound Jul 6 '14 at 21:13
  • FWIW this has never worked for me either, if memory serves I've always had to use hook_form_alter() and strpos the $form_id to target all node forms in one go. Never did look into why, if I get some time I will... – Clive Jul 6 '14 at 21:19
  • @undersound, eureka! (and I feel stupid now). Please post this as an answer and you'll get your 25 rep points if you manage to get it typed up before this is closed as PEBKAC. – Free Radical Jul 6 '14 at 22:19
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Not sure if relevant but I while copying your code I did received a warning. Warning: Unterminated comment, but perhaps that sneaked in while placing the code in the question.

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These are always fun... First, did you clear your cache? You always have to clear your cache when adding or changing a hook, and, to be honest, your code looks correct.

Second, to find out the BASE_FORM_ID, to better target a node edit form, you can do this to output all the form ids on the page:

function mymodule_form_alter(&$form, $form_state, $form_id) {
  dsm($form_id);
}

You may discover that the more-targeted $form_id is something like article_node_form. I have seen it both ways.

  • Yup, cleared the cache, restarted apache, rebooted the server. Sorry about leaving that detail out. Your method for getting the BASE_FORM_ID is wrong tho'. What your method extracts is the form_id (which is article_node_form for an article). That is not the base_form_id. – Free Radical Jul 6 '14 at 20:47
  • Correct, it is the form_id, but that works, too. I just double-checked some of my sites to verify that I remembered it correctly. We used it when we needed to modify multiple node forms in different ways, so rather than having a big function with a switch statement, we targeted the individual forms. The cache clear should have been enough (are you using any exotic caching solutions such as memcached or APC cache?) – coreyp_1 Jul 6 '14 at 21:00
  • Well, my use case is the opposite, I have around 50 different node forms, and I want to add a field to each of them, so I rather than targeting all 50 individual forms, I want to target all of them with a single hook that (if it had worked) would fire on all of them. That is pretty a common use of hook_form_BASE_FORM_ID_alter() if tutorials are anything to go by. – Free Radical Jul 6 '14 at 21:05

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