Improve/modify form, view, template. Add permissions

apps/food/models.py

@@ -94,7 +94,6 @@ class Food(PolymorphicModel):
         verbose_name=_('is active'),
     )
 
-
     def __str__(self):
         return self.name
 
@@ -176,6 +175,11 @@ class TransformedFood(Food):
         default=timedelta(days=3),
     )
 
+    @transaction.atomic
+    def archive(self):
+        # When a meal are archived, if it was eaten, update ingredient fully used for this meal
+        raise NotImplementedError
+
     @transaction.atomic
     def update_allergens(self):
         # When allergens are changed, simply update the parents' allergens