Getting count from pivot table in laravel eloquent

Question

I have a many to many relationship for orders and products.

Answer 1

If you already have the $products object, you can do the following:

$rolecount = $products->roles()->count();

Or if you are using eager loading:

$rolecount = $products->roles->count();

Cheers.

Answer 2

Mind that Eloquent uses Query\Builder under the hood, so there is no such thing in Laravel, like 'query eloquent without using query builder'.

And this is what you need:

// additional helper relation for the count
public function ordersCount()
{
    return $this->belongsToMany('Order')
        ->selectRaw('count(orders.id) as aggregate')
        ->groupBy('pivot_product_id');
}

// accessor for easier fetching the count
public function getOrdersCountAttribute()
{
    if ( ! array_key_exists('ordersCount', $this->relations)) $this->load('ordersCount');

    $related = $this->getRelation('ordersCount')->first();

    return ($related) ? $related->aggregate : 0;
}

This will let you take advantage of eager loading:

$products = Product::with('ordersCount')->get();

// then for each product you can call it like this
$products->first()->ordersCount; // thanks to the accessor

Read more about Eloquent accessors & mutators,

and about dynamic properties, of which behaviour the above accessor mimics.

---

Of course you could use simple joins to get exactly the same query like in you example.

Answer 3

For future viewers, as of Laravel 5.2, there is native functionality for counting relationships without loading them, without involving your resource model or accessors -

In the context of the example in the approved answer, you would place in your controller:

$products = Product::withCount('orders')->get();

Now, when you iterate through $products on your view, there is a orders_count (or, generically, just a {resource}_count) column on each retrieved product record, which you can simply display as you would any other column value:

@foreach($products as $product)
    {{ $product->orders_count }} 
@endforeach

This method produces 2 fewer database queries than the approved method for the same result, and the only model involvement is ensuring your relationships are set up correctly. If you're using L5.2+ at this point, I would use this solution instead.

Answer 4

I am using Laravel 5.1 and i am able to accomplish that by doing this

 $photo->posts->count()

And the posts method in Photo model looks like this

public function posts(){
    return $this->belongsToMany('App\Models\Posts\Post', 'post_photos');
}