I use django-rest-framework to create Rest API within Django framework. And it's possible to return any validationError beside serializer methods.
But, I was wondering is it possible to return errors from save() method of django model that be translated to django rest validationError?
For example imagine I want to limit creating objects on a specific table. like this:
class CustomTable(models.Model):
... # modles fields go here
def save():
if CustomTable.objects.count() > 2:
# Return a validationError in any serializer that is connected to this model.
Note I could use raise ValueError or raise ValidationError, but they all cause 500 error on endpoint. But i want to return a response in my api view that says for example 'limit reached'
Ken4scholars :
The DRF ValidationError is handled in the serializer so you should catch any expected errors when calling your model's save method and use it to raise a ValiddationError.\nFor example, you could do this in your serializer's save method:\ndef save(self, **kwargs):\n try:\n super().save(**kwargs)\n except ModelError as e:\n raise serializers.ValidationError(e)\n\nWhere ModelError is the error you're raising in your model",
2019-01-06T12:22:46