Laravel Load Relation With Condition On Model

Question

I'm attempting to eager load a user's notifications with a relation that depends on a value of notification model:

$notifications = $user->notifications()
    ->with([
        'notifiable' => function ($query) {
            // Only load notifiable relation if notification 'notifiable_type' equals...
        },
        'notifiable.group:id,title' => function ($query) {
            // Only load notifiable.group:id,title relation if notification 'notifiable_type' equals... 
        }
    ])
    ->get();

The issue is the $query within the closures are querying on the notifiable relation rather than the notification model itself... I'm obviously missing something very trivial. Any suggestions?

Answer 1

You could make use of Lazy Eager Loading

$notifications = $user->notifications;

$notifications->each(function ($item) {
    if ($item->notifiable_type == 'value-one') {
        $item->load('notifiable');
    }

    if ($item->notifiable_type == 'value-two') {
        $item->load('notifiable.group:id,title');
    }
});