gistfile1.php

class ProductController {

 protected $productFactory;
 
 public function __construct(ProductFactory $productFactory)
 {
  $this->productFactory = $productFactory;
 }
  
 public function create($product_type)
 {
   // Some post data validation logic here
   
   // Now we need to instantiate our product 
   $product = $this->productFactory->build($product_type, $post['sku'], $post['name'])
 
   
   // Do something with the post data and save the product 
   
   ...
   
   return $product->getType();
 }
}