Load Count on-the-fly

In addition to Eloquent's withCount() method to count related records, you can also load the count on-the-fly, with loadCount():

 1// if your Book hasMany Reviews...
 2$book = App\Book::first();
 3 
 4$book->loadCount('reviews');
 5// Then you get access to $book->reviews_count;
 6 
 7// Or even with extra condition
 8$book->loadCount(['reviews' => function ($query) {
 9    $query->where('rating', 5);
10}]);