Django update_or_create raises IntegrityError within Serializer - django

Question

I have the following ModelSerializer with a create method. In this method I call the model's update_or_create method. But when I do this, the serializer's validation raises the error
rest_framework.exceptions.ValidationError: [{'non_field_errors': [ErrorDetail(string='The fields user_id, capacity_id must make a unique set.', code='unique')]}, {}].
I thought that since I'm using update_or_create, it would find the row that matches validated data's user_id and capacity_id, and then update that row. But the validation runs before create, and the data is not valid because of the unique constraint. So how do I ignore this constraint?
class ActivatedCapacitySerializer(serializers.ModelSerializer):
user_id = serializers.IntegerField(required=False)
capacity_id = serializers.IntegerField(required=False)
class Meta:
model = ActivatedCapacity
fields = ('user_id', 'capacity_id', 'active')
def create(self, validated_data):
activated_capacity = ActivatedCapacity.objects.update_or_create(
user_id=validated_data['user_id'],
capacity_id=validated_data['capacity_id'],
defaults = {
'active': validated_data['active']
}
)
return activated_capacity
Models.py
class ActivatedCapacity(models.Model):
user_id = models.IntegerField()
capacity_id = models.IntegerField()
active = models.BooleanField(default=False)
class Meta:
unique_together = ('user_id', 'capacity_id',)

Answer 1

I just had to include in the serializer's class Meta an empty validators list, so it will override the model's default validators.
class ActivatedCapacitySerializer(serializers.ModelSerializer):
user_id = serializers.IntegerField(required=False)
capacity_id = serializers.IntegerField(required=False)
class Meta:
model = ActivatedCapacity
fields = ('user_id', 'capacity_id', 'active')
validators = []
...