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If I want to modify a form, should I use hook_civicrm_buildForm? This function requires a formName argument, so how can I identify the FormName or Form ID of the form I'm currently viewing on the site? Does CiviCRM have built-in debugging tools for this purpose, or do I need to use a third-party extension like Devel for Drupal?

I would greatly appreciate any assistance that anyone can provide. Thank you very much.

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Yes, to modify the form you can hook_civicrm_buildForm. If you print the $formName you should be able to see formname on screen.

I normally use Civi build in function for debuggings

  1. To print on screen - CRM_Core_Error::debug('$formname', $formName);
  2. To print in Civi logs - CRM_Core_Error::debug_va('$formname', $formName);
  3. Backtrace to show screen - CRM_Core_Error::backtrace();
  4. Backtrace in log - CRM_Core_Error::backtrace('show', TRUE);
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  • Thanks for your answer, should I run these debug codes inside the custom module directory?
    – nonono1234
    Commented May 23, 2023 at 12:33
  • Yes, put exit; statement
    – Pradeep Nayak
    Commented May 23, 2023 at 14:21
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Appending &smartyDebug=1 to the URL will pop out a window that contains a lot of info including formName and formClass.

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  • Thank you for your response. I would like to know how to use the solution provided if the form is an AJAX form. I tried adding '&smartyDebug=1', but it only shows the information before the form is loaded and appears.
    – nonono1234
    Commented May 24, 2023 at 14:16
  • Depends on what you're looking at. Something SearchKit-based would be quite different from Mailings, for example.
    – Lars SG
    Commented May 24, 2023 at 16:04

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