Implements hook_validate().

Performs validation checks on the given node.

1 call to node_validate()

node_form_validate in modules/node/node.pages.inc

Form validation handler for node_form().

File

modules/node/node.module, line 1011

Code

function node_validate ($node, $form, &$form_state) {
 if (isset($node->nid) && node_last_changed ($node->nid) > $node->changed ) {
 form_set_error ('changed', t ('The content on this page has either been modified by another user, or you have already submitted modifications using this form. As a result, your changes cannot be saved.'));
 }
 // Validate the "authored by" field.
 if (!empty($node->name ) && !$account = user_load_by_name ($node->name )) {
 // The use of empty() is mandatory in the context of usernames
 // as the empty string denotes the anonymous user. In case we
 // are dealing with an anonymous user we set the user ID to 0.
 form_set_error ('name', t ('The username %name does not exist.', array(
 '%name' => $node->name ,
 )));
 }
 // Validate the "authored on" field.
 if (!empty($node->date) && strtotime ($node->date) === FALSE) {
 form_set_error ('date', t ('You have to specify a valid date.'));
 }
 // Invoke hook_validate() for node type specific validation and
 // hook_node_validate() for miscellaneous validation needed by modules. Can't
 // use node_invoke() or module_invoke_all(), because $form_state must be
 // receivable by reference.
 $function = node_type_get_base ($node) . '_validate';
 if (function_exists ($function)) {
 $function($node, $form, $form_state);
 }
 foreach (module_implements ('node_validate') as $module) {
 $function = $module . '_node_validate';
 $function($node, $form, $form_state);
 }
}

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