CE just calls $manager->createObjectContainer($object) where object is the name of the class being extended minus the 'mod' (e.g., User or Resource), plus 'Data'. I don't think the schema is actually used at that point. I think it uses the parent class's class and map files, which wouldn't contain your indexes.
I don't think that was the intention, but it was a while ago and I can't remember for sure.
The relevant code in the ClassExtender class file (core\components\classextender\model\classextender\classextender.class.php) is:
(from line 81)
$this->ce_package_name = isset($_POST['ce_package'])
? $_POST['ce_package']
: $this->modx->getOption('package', $this->props, 'extendeduser');
$this->packageLower = strtolower($this->ce_package_name);
$this->ce_parent_object = isset($_POST['ce_parent_object'])
? $_POST['ce_parent_object']
: $this->modx->getOption('parentObject', $this->props, 'modUser');
$this->ce_class = isset($_POST['ce_class'])
? $_POST['ce_class']
:$this->modx->getOption('class',
$this->props, $this->ce_parent_object);
/* Strip off 'mod' to produce 'User' or 'Resource' */
$this->objectPrefix = substr($this->ce_parent_object, 3);
$this->objectPrefixLower = strtolower($this->objectPrefix);
and these lines at line 245:
$object = $this->objectPrefixLower . 'Data';
$success = $manager->createObjectContainer($object);
I think this comes from a previous version where CE actually extended modUser and modResource, so their indexes were relevant. I don't have time to work on it right now, but you might try changing that last line to:
$success = $manager->createObjectContainer($this->ce_class);
and see what that gets you. It might create the table properly and, with luck, it might not break the snippet, though I wouldn't put a lot of money on it.
[ed. note: BobRay last edited this post 11 years ago.]
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