[WarpFood] Added last_edited field

www/web/warpfood/models.py

@@ -28,7 +28,8 @@ class FoodProduct(models.Model):
     food_category = models.ForeignKey(FoodCategory, on_delete=models.CASCADE)
     size = models.CharField(max_length=100, null=True)
     price = models.FloatField()
-
+    last_edited = models.DateTimeField(auto_now=True)
+    
     def __str__(self):
         return self.name + " - " + self.size