Product class optimisation

app/Models/Product/Broadband.php

@@ -34,17 +34,8 @@ final class Broadband extends Type implements ProductItem
 	// The model that is referenced when this product is ordered
 	protected string $order_model = ServiceBroadband::class;
 
-	/* RELATIONS */
-
-	/**
-	 * The offering supplied with this product
-	 *
-	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
-	 */
-	public function supplied()
-	{
-		return $this->hasOne(SupplierBroadband::class,'id','supplier_item_id');
-	}
+	// The model that the supplier supplies
+	const SupplierModel = SupplierBroadband::class;
 
 	/* INTERFACES */
 

app/Models/Product/Domain.php

@@ -31,17 +31,8 @@ final class Domain extends Type implements ProductItem
 	// The model that is referenced when this product is ordered
 	protected string $order_model = ServiceDomain::class;
 
-	/* RELATIONS */
-
-	/**
-	 * The offering supplied with this product
-	 *
-	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
-	 */
-	public function supplied()
-	{
-		return $this->hasOne(SupplierDomain::class,'id','supplier_item_id');
-	}
+	// The model that the supplier supplies
+	const SupplierModel = SupplierDomain::class;
 
 	/* INTERFACES */
 

app/Models/Product/Email.php

@@ -15,17 +15,8 @@ final class Email extends Type implements ProductItem
 	// The model that is referenced when this product is ordered
 	protected string $order_model = ServiceEmail::class;
 
-	/* RELATIONS */
-
-	/**
-	 * The offering supplied with this product
-	 *
-	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
-	 */
-	public function supplied()
-	{
-		return $this->hasOne(SupplierEmail::class,'id','supplier_item_id');
-	}
+	// The model that the supplier supplies
+	const SupplierModel = SupplierEmail::class;
 
 	/* INTERFACES */
 

app/Models/Product/Generic.php

@@ -15,17 +15,8 @@ final class Generic extends Type implements ProductItem
 	// The model that is referenced when this product is ordered
 	protected string $order_model = ServiceGeneric::class;
 
-	/* RELATIONS */
-
-	/**
-	 * The offering supplied with this product
-	 *
-	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
-	 */
-	public function supplied()
-	{
-		return $this->hasOne(SupplierGeneric::class,'id','supplier_item_id');
-	}
+	// The model that the supplier supplies
+	const SupplierModel = SupplierGeneric::class;
 
 	/* INTERFACES */
 

app/Models/Product/Host.php

@@ -15,17 +15,8 @@ final class Host extends Type implements ProductItem
 	// The model that is referenced when this product is ordered
 	protected string $order_model = ServiceHost::class;
 
-	/* RELATIONS */
-
-	/**
-	 * The offering supplied with this product
-	 *
-	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
-	 */
-	public function supplied()
-	{
-		return $this->hasOne(SupplierHost::class,'id','supplier_item_id');
-	}
+	// The model that the supplier supplies
+	const SupplierModel = SupplierHost::class;
 
 	/* INTERFACES */
 

app/Models/Product/Phone.php

@@ -42,17 +42,8 @@ final class Phone extends Type implements ProductItem
 	// The model that is referenced when this product is ordered
 	protected string $order_model = ServicePhone::class;
 
-	/* RELATIONS */
-
-	/**
-	 * The offering supplied with this product
-	 *
-	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
-	 */
-	public function supplied()
-	{
-		return $this->hasOne(SupplierPhone::class,'id','supplier_item_id');
-	}
+	// The model that the supplier supplies
+	const SupplierModel = SupplierPhone::class;
 
 	/* INTERFACES */
 

app/Models/Product/SSL.php

@@ -15,17 +15,8 @@ final class SSL extends Type implements ProductItem
 	// The model that is referenced when this product is ordered
 	protected string $order_model = ServiceSSL::class;
 
-	/* RELATIONS */
-
-	/**
-	 * The offering supplied with this product
-	 *
-	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
-	 */
-	public function supplied()
-	{
-		return $this->hasOne(SupplierSSL::class,'id','supplier_item_id');
-	}
+	// The model that the supplier supplies
+	const SupplierModel = SupplierSSL::class;
 
 	/* INTERFACES */
 

app/Models/Product/Type.php

@@ -27,6 +27,16 @@ abstract class Type extends Model
 		return $this->morphMany(Product::class, null,'model','model_id');
 	}
 
+	/**
+	 * The offering supplied with this product
+	 *
+	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
+	 */
+	public function supplied()
+	{
+		return $this->hasOne(static::SupplierModel,'id','supplier_item_id');
+	}
+
 	/**
 	 * This will return the category of the product (eg: domain, hosting, etc) which is the basis for all
 	 * other logic of these types.