duplicate feature

app/Models/Income/Invoice.php

@@ -5,11 +5,13 @@ namespace App\Models\Income;
 use App\Models\Model;
 use App\Traits\Currencies;
 use App\Traits\DateTime;
+use App\Traits\Incomes;
+use Bkwld\Cloner\Cloneable;
 use Sofa\Eloquence\Eloquence;
 
 class Invoice extends Model
 {
-    use Currencies, DateTime, Eloquence;
+    use Cloneable, Currencies, DateTime, Eloquence, Incomes;
 
     protected $table = 'invoices';
 
@@ -44,6 +46,13 @@ class Invoice extends Model
         'notes'            => 2,
     ];
 
+    /**
+     * Clonable relationships.
+     *
+     * @var array
+     */
+    protected $cloneable_relations = ['histories', 'items', 'payments', 'totals'];
+
     public function user()
     {
         return $this->belongsTo('App\Models\Auth\User', 'customer_id', 'id');
@@ -99,6 +108,11 @@ class Invoice extends Model
         return $query->where('invoice_status_code', '!=', 'draft');
     }
 
+    public function onCloning($src, $child = null)
+    {
+        $this->invoice_number = $this->getNextInvoiceNumber();
+    }
+
     /**
      * Convert amount to double.
      *