This content originally appeared on DEV Community and was authored by DoriDoro
Introduction
As the Django documentation says: "A validator is a callable that takes a value and raises a ValidationError if it doesn’t meet some criteria. Validators can be useful for reusing validation logic between different types of fields."
Yes, you can make your own validator. In this example, I am going to create a password validator that will check if the given password contains at least one letter.
To create a custom validator, create a file called validators.py within one of your Django applications.
# validators.py
from django.core.exceptions import ValidationError
class ContainsLetterValidator:
def validate(self, password, user=None):
if not any(char.isalpha() for char in password):
raise ValidationError(
'The password must contain at least one letter',
code='password_no_letters'
)
def get_help_text(self):
return 'Your password must contain at least one upper or lower case letter.'
Once you have created the validator, add it to your settings.py file inside the AUTH_PASSWORD_VALIDATORS dictionary.
# settings.py
AUTH_PASSWORD_VALIDATORS = [
{
"NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
"NAME": "app.validators.ContainsLetterValidator",
},
]
The validator is now used to validate the creation of a password.
- official Django documentation about validators
This content originally appeared on DEV Community and was authored by DoriDoro
DoriDoro | Sciencx (2024-09-03T15:54:21+00:00) How to create a Django password validator?. Retrieved from https://www.scien.cx/2024/09/03/how-to-create-a-django-password-validator/
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