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Insert immediately before or after an element in a formInsert immediately before or after an element in a form
Submitted by Benjamin Melançon on November 27, 2009 - 11:05am
If you just want to insert something first in an array, as to make sure that your validation function is called first, you can do something like this:
<?php
array_unshift($form['#validate'], 'mymodule_form_expert_bio_node_validate_title');
?>(Note on validation: You cannot get in front of the Drupal form checking if a value is required, so if you are filling in a value with a validation function, form_alter the field to not be required.)
Untested because the module I was adding it to didn't need it; prefix and suffix were good enough.
$new['new_form_element_name'] = array('value' => 'markup!');
_au_insert_in_form($form, $new, 'title', TRUE)
<?php
/**
* Insert immediately before or after an element in a form.
*
* Agaric Utility function.
*/
function _au_insert_in_form(&$form, $new, $element, $after = FALSE);
// add the option before the buttons
$pos = array_search($element, array_keys($form_values));
if ($after) {
$pos = $pos + 1;
}
$form = array_merge(
array_slice($form, 0, $pos),
$new,
array_slice($form, $pos)
);
}
?>Note from ben: I've since tested just the last part (i already knew the position) and it works great.
<?php
$output = array_merge(
array_slice($output, 0, 1),
$book,
array_slice($output, 1)
);
?>I was implementing hook_menu_local_tasks_alter(&$data, $router_item, $root_path) and that $output variable is actually $output =& $data['tabs'][0]['output'];
Searched words:
place form
drupal array_splice merge form
drupal 7 validate function
split array
add value into array
add to beginning of array
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