discount

app/Models/Income/Invoice.php

@@ -21,7 +21,7 @@ class Invoice extends Model
      *
      * @var array
      */
-    protected $appends = ['attachment'];
+    protected $appends = ['attachment', 'discount'];
 
     protected $dates = ['deleted_at', 'invoiced_at', 'due_at'];
 
@@ -164,4 +164,26 @@ class Invoice extends Model
 
         return $this->getMedia('attachment')->last();
     }
+
+    /**
+     * Get the discount percentage.
+     *
+     * @return string
+     */
+    public function getDiscountAttribute()
+    {
+        $discount = 0;
+
+        foreach ($this->totals as $total) {
+            if ($total->code != 'discount') {
+                continue;
+            }
+
+            $discount = number_format((($total->amount * 100) / $this->amount), 0);
+
+            break;
+        }
+
+        return $discount;
+    }
 }