Is it a good practice to choose a model based on POST-ed model class name?

Suppose we have models A, and B and we need to choose which one of them to instantiate based on the information posted from the view.

Would it be a good practice to do something like this:

// ...
$data       = $request()->get('model'); // <-- contains: $data['id'] and $data['class_name']

$id         = $data['id'];
$class_name = $data['class_name'];

$$class_name::find($id); // <-- notice, that we are using POST-ed 'class_name' to determine which model we want to use!
// ...

Or can this approach introduce some problems in the future?

via Chebli Mohamed