Regex validator produce migration without changes

Question

Django detect changes in models with RegexValidator, from django.core.validators import RegexValidator

url_regex_validator = RegexValidator(
        regex=r'^(\w{1,5}:\/\/)([\w\+\/-]+)([\.]\w{1,4})$',
        message="Error invalid URL")

model:

class MyModel(models.Model):
path = models.CharField(max_length=200, default=None, blank=True, null=True, validators=[url_regex_validator])

Every

python manage.py makemigrations

• Alter field path on mymodel

produce a new migration about regex validator in this model. Any idea?

Answer 1

As I found here https://code.djangoproject.com/ticket/25280#no1

A quick fix is to workaround this issue is just copy paste the code in django.core.validators:

from django.core.validators import RegexValidator
    
    url_regex_validator = [RegexValidator(
            regex=r'^(\w{1,5}:\/\/)([\w\+\/-]+)([\.]\w{1,4})$',
            message="Error invalid URL")]

class MyModel(models.Model):
    slug = models.SlugField(unique=True, validators=url_regex_validator)