Laravel get a collection of relationship items

I'm stuck on this what seems like a simple task.

I have a User that has many Shops that have many Products..

I'm trying to get all the Products for a certain User.

This is working, and is returning the Shops with their Products

\Auth::user()->shops()->with('products')->get();

But I need a Collection of only the Products. I tried the following but it's messing up the Query

\Auth::user()->shops()->with('products')->select('products.*')->get();

Any idea what I'm doing wrong? Thank you!

You can use this :

\Auth::user()->shops()->with('products')->get()->pluck('products')->flatten();

if you don't want replicate, you can use ->unique()

what you need is a relationship between the User Model and the Product Model ..

this is possible using hasManyThrough relationship ..

USER MODEL

public function products()
{
    return $this->hasManyThrough('App\Product', 'App\Shop')
}

now, you can access all the user's products with

Auth::user()->products;

In this case you can use lazy eager loading:

auth()->user()->load('shops.products');

To iterate over products:

@foreach (auth()->user()->shops as $shop)
    @foreach ($shop->products as $product)
        {{ $product->name }}
    @endforeach
@endforeach

If you need just products:

Product::whereHas('shop', function ($q) {
    $q->where('user_id', auth()->id());
})->get();

In both cases, you'll have the same number of queries to DB, so I'd use the first example in a real app.

Assuming that your product model has the shop id stored, try the following:

Products::whereIn('id_shop',
    Shops::select('id')
    ->where('id_owner_user',Auth::user()->id)
    ->get())
->get()

It will retrieve a collection of products that belong to the list of shops which belong to the authenticated user

来源：https://stackoverflow.com/questions/43909607/laravel-get-a-collection-of-relationship-items

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