I have a field in my users model that will only be utilized for a Certain type of user
student_id = models.CharField(_("student id"), validators=[
MinValueValidator(10_000_000_000),
MaxValueValidator(99_999_999_999)
],unique=True, max_length=8, blank=True, null=True)
when creating a user in the serializers.py file i tried the below code but didn't work
def create(self, validated_data):
def create_new_ref_number():
not_unique = True
while not_unique:
unique_id = randint(10000000, 99999999)
if not User.objects.filter(student_id=unique_id):
not_unique = False
instance = User.objects.create(
student_id=create_new_ref_number,
firstname=validated_data['firstname'],
middlename=validated_data['middlename'],
lastname=validated_data['lastname'],
age=validated_data['age'],
phone=validated_data['phone'],
)
after saving the user the student_id field is populated with the following string
<function RegisterSerializerStudent.create.<locals>.create_new_ref_number at 0x000001E4C463A950>
You need to call the function:
instance = User.objects.create(
# call the function ↓↓
student_id=create_new_ref_number(),
# …
)otherwise it will call str(…) on the function object, and in that case you indeed get a string that presents the name of the function together with the location in memory.
Your function should also return the generated key, so:
def create(self, validated_data):
def create_new_ref_number():
unique_id = randint(10000000, 99999999)
while User.objects.filter(student_id=unique_id):
unique_id = randint(10000000, 99999999)
return unique_id
# …