Why max_length in URLField, because there is no standard?

Question

Django

models.URLField is inherited from CharField, which enforces the need to specify a max_length limit.
Firstly: why so, because there is no standard for restriction
Secondly: what to do? to use TextField? If not, then what to set max_length, because I collect urls on the internet and cannot predict the maximum length. How are you doing?

Answer 1

from django.core.validators import URLValidator
field = models.TextField(validators=[URLValidator()])