如何使用雄辩的方法在Laravel中获得复杂关系

Question

I have below tables

Users

id
name

Companies

id
user_id
name

Product Categories

id
company_id
name

Products

id
product_category_id
name

Sales

id
product_id
price
quantity
total

Now i want to get all sales for specified user's products. I have tried with below query. But i cannot use where for this. It is not apply this filter. Also i want to filter it by few other fields like users.user_name, products.product_name ... etc

$sales = Sale::with(['product'=>function($q) use ($user_id) {
        $q->with(['product_category' => function($q) use ($user_id) {
            $q->with(['company'=> function($q) use ($user_id) {
                $sUserName = Input::get('sUserName');
                $q->with(['user'=> function($q) use ($sUserName,$user_id) {
                    $q->where('id', $user_id);
                }]);
            }]);
        }]);
    }]);

Is it possible to use Eloquent for these situations ? Or should i use join queries ? Please advice me. thanks

Answer 1

you can use laravel eloqunt like this.

$Sales = DB::table('Sales') ->join('Products', 'Sales.product_id', '=', 'Products.id') ->join('ProductCategories', 'ProductCategories.id', '=', 'Products.product_category_id') ->join('companies', 'ProductCategories.company_id', '=', 'companies.id') ->join('Users', 'companies.user_id', '=', 'Users.id') ->select('Sales.*') ->get();

Answer 2

After madalinivascu advise i could be able to resolve my problem as below. Now i can filter it by Ordered User, Product name & dates.

$sUserName = Input::get('sUserName');
    $sProductName = Input::get('sProductName');
    $sFrom = Input::get('sFrom');
    $sTo = Input::get('sTo');

    $user_id = \Auth::User()->id;


    // Show sales only for his products
    $sales = Sale::with('sold_to_user')
        ->whereHas('sold_to_user', function($q) use ($sUserName) {
            if(!empty($sUserName)) $q->where('name','LIKE', "$sUserName%");
        })->with('product')
        ->whereHas('product', function($q) use ($sProductName) {
            if(!empty($sProductName)) $q->where('name','LIKE', "$sProductName%");
            });

    if(\Auth::User()->privilege!='administrator') $sales = $sales->where('user_id','=',$user_id);


    $sales = $sales->orderBy('updated_at','desc')->paginate(100);