Laravel Eloquent模型如何从关系表中获取数据

I am developing a laravel application which has the following eloquent models

• Product hasMany('App/Sku','products_id')
• Sku belongTO('App/Product')

我有一个控制器‘ProductController’，其中提供了以下代码

public function index()
{    
    $products = Product::all();
    foreach($products as $product){
            $products_id = $product->products_id;
    }
}

I am exposing RESTfull API which will allow my users to get all product details (including skus, shipping types etc..).

假设我有一个API GET : /products

获取所有产品详细信息的代码如下所示

public function index()
{              
      $products = Product::all();
      foreach($products as $product){
          $products_id = $product->products_id;
          $skus_data = Product::find($products_id)->skus;
      }
        // Now I have both the product details + skus which I can bundle into an array/json.
}

现在我的问题是，这个逻辑正确吗？在本例中，所有逻辑都在控制器中，因为IM使用Eloquent 的模型，我 for each 表都有一个模型，并且在其中定义了关系.有没有一种方法可以获得产品/相关型号的所有详细信息(产品详细信息(表1中)+SKU详细信息(表2中))，而不是使用以下内容

foreach($products as $product){
    $products_id = $product->products_id;
    $skus_data = Product::find($products_id)->skus;
}

I am pretty new to laravel development and eloquent models. I will be using repository pattern for the development and in that case where does the aboe logic (Product+Sku combining) resides.

Please help out.