django charfield force lowercase

Using Django to Force Lowercase Input for CharField

from django.utils.text import slugify
from django.db import models

class YourModel(models.Model):
    your_field = models.CharField(max_length=100)

    def save(self, args, *kwargs):
        self.your_field = slugify(self.your_field)
        super(YourModel, self).save(args, *kwargs)