function form_set_value

Changes submitted form values during form validation.

Use this function to change the submitted value of a form element in a form validation function, so that the changed value persists in $form_state through the remaining validation and submission handlers. It does not change the value in $element['#value'], only in $form_state['values'], which is where submitted values are always stored.

Note that form validation functions are specified in the '#validate' component of the form array (the value of $form['#validate'] is an array of validation function names). If the form does not originate in your module, you can implement hook_form_FORM_ID_alter() to add a validation function to $form['#validate'].


$element: The form element that should have its value updated; in most cases you can just pass in the element from the $form array, although the only component that is actually used is '#parents'. If constructing yourself, set $element['#parents'] to be an array giving the path through the form array's keys to the element whose value you want to update. For instance, if you want to update the value of $form['elem1']['elem2'], which should be stored in $form_state['values']['elem1']['elem2'], you would set $element['#parents'] = array('elem1','elem2').

$value: The new value for the form element.

$form_state: Form state array where the value change should be recorded.

Related topics

24 calls to form_set_value()
field_test_widget_multiple_validate in drupal/modules/field/tests/
Form element validation handler for 'test_field_widget_multiple' widget.
file_managed_file_submit in drupal/modules/file/file.module
Form submission handler for upload / remove buttons of managed_file elements.
file_managed_file_validate in drupal/modules/file/file.module
An #element_validate callback for the managed_file element.
filter_admin_format_form_validate in drupal/modules/filter/
Form validation handler for filter_admin_format_form().
form_test_element_validate_name in drupal/modules/simpletest/tests/form_test.module
Form element validation handler for 'name' in form_test_validate_form().

... See full list


drupal/includes/, line 2656
Functions for form and batch generation and processing.


function form_set_value($element, $value, &$form_state) {
  drupal_array_set_nested_value($form_state['values'], $element['#parents'], $value, TRUE);