form_get_errors

5 form.inc	`form_get_errors()`
6 form.inc	`form_get_errors()`
7 form.inc	`form_get_errors()`
8 form.inc	`form_get_errors()`

Returns an associative array of all errors.

12 calls to form_get_errors()

File

includes/form.inc, line 1599: Functions for form and batch generation and processing.

Code

function form_get_errors() {
  $form = form_set_error();
  if (!empty($form)) {
    return $form;
  }
}

Comments

Using form_get_errors to skip cascading form validation

Posted by texas-bronius on August 26, 2011 at 2:36pm

If you are stacking validation functions, even just applying a custom validation atop the FAPI default validation (like required fields), you can choose to *not* fire off your validation code until all previous validation has succeeded with a if (form_get_errors()) return; as in:

<?php
/**
 * Custom Form Validation
 */
function my_module_form_validate($form, &$form_state) {
  // Don't custom-validate if previous validation errors (still) exist
  if (form_get_errors()) return;
  // .. Otherwise, process custom form validation goes here
}
?>

This would prevent some custom validation functionality to occur until all the "xyz form field required" have been resolved. And no, merely calling form_get_errors() does not pop the stack and prevent their display.

Filter out specific errors during validation

Posted by peterpoe on April 10, 2012 at 4:56pm

Not in a very clean way, but can be done:
(I'm planning to use something similar to this in the Conditional Fields module)

<?php
/**
 * Custom Form Validation.
 * Removes all form validation errors caused by a 'foo][bar' form element.
 */
function my_module_form_validate($form, &$form_state) {
  $errors = form_get_errors();
  if ($errors) {
    // Clear errors.
    form_clear_error();
    // Clear error messages.
    $error_messages = drupal_get_messages('error');
    // Initialize an array where removed error messages are stored.
    $removed_messages = array();

    // Remove all errors originated by the 'foo][bar' element.
    foreach ($errors as $name => $error_message) {
      if ($name == 'foo][bar') {
        $removed_messages[] = $error_message;
        unset($errors[$name]);
      }
    }

    // Reinstate remaining errors.
    foreach ($errors as $name => $error) {
      form_set_error($name, $error);
      // form_set_error() calls drupal_set_message(), so we have to filter out
      // these from the error messages as well.
      $removed_messages[] = $error;
    }

    // Reinstate remaining error messages (which, at this point, are messages that
    // were originated outside of the validation process).
    foreach (array_diff($error_messages['error'], $removed_messages) as $message) {
      drupal_set_message($message, 'error');      
    }
  }
}
?>

Just what I was looking for.

Posted by Leglaw on May 1, 2012 at 1:03am

Thank you for your contribution -- you saved me quite a bit of time.

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