function hook_node_validate
7.x node.api.php | hook_node_validate($node, $form, &$form_state) |
Perform node validation before a node is created or updated.
This hook is invoked from node_validate(), after a user has has finished editing the node and is previewing or submitting it. It is invoked at the end of all the standard validation steps, and after the type-specific hook_validate() is invoked.
To indicate a validation error, use form_set_error().
Note: Changes made to the $node object within your hook implementation will have no effect. The preferred method to change a node's content is to use hook_node_presave() instead. If it is really necessary to change the node at the validate stage, you can use form_set_value().
Parameters
$node: The node being validated.
$form: The form being used to edit the node.
$form_state: The form state array.
Related topics
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
- forum_node_validate in drupal-7.x/
modules/ forum/ forum.module - Implements hook_node_validate().
- translation_node_validate in drupal-7.x/
modules/ translation/ translation.module - Implements hook_node_validate().
- field_attach_validate in drupal-7.x/
modules/ field/ field.attach.inc - Perform field validation against the field data in an entity.
- node_validate in drupal-7.x/
modules/ node/ node.module - Implements hook_validate().
File
- drupal-7.x/
modules/ node/ node.api.php, line 768 - Hooks provided by the Node module.
Code
function hook_node_validate($node, $form, &$form_state) {
if (isset($node->end) && isset($node->start)) {
if ($node->start > $node->end) {
form_set_error('time', t('An event may not end before it starts.'));
}
}
}