Last year I wrote a quick code snippet to Prevent the user from creating more than one node of a certain type for Drupal 5. I received a comment request to update this code for Drupal 6.
<?php
function MYMODULE_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
// define node type that a user will only be allowed to create one instance of
$singleNodeType = 'YOUR-NODE-TYPE';
// test for node/add/NODETYPE page
if ($node->type==$singleNodeType && $op=='prepare' && arg(0)=='node' && arg(1)=='add') {
// define sql to create node table
$sql = "select nid from {node} where type='%s' and uid='%d'";
// execute sql
$resource = db_query($sql, $singleNodeType, db_escape_string($GLOBALS['user']->uid));
$result = db_result($resource);
// test for result
if (!empty($result)) {
// set a message
drupal_set_message("Sorry, you are only allow to create one $singleNodeType.");
// redirect the user
drupal_goto('node/add');
}
}
}
?>The above code tests if the user is on the node/add/NODETYPE page and if the user has already created an instance of the node type, sets a message and redirects them away from the node/add page.
great! but
Hi Eric! Awesome: this solves a lot of problems; but...
what about if an administrator wants to create different events cased on a "webform content type"?
I guess that a user could apply for one event but not for another one based on the same content type? Is that so?
Thank you so much for your help!
Lorenzo