I have model like following:
class Rule(models.Model):
    business = models.ForeignKey('profiles.Employee', limit_choices_to={'is_employee': True})
    title = models.CharField(max_length=50, blank=False)
    slug = models.SlugField(max_length=50, blank=True, null=True)
    detail = models.TextField(max_length=200)
    frequency = models.CharField(choices=freqs, max_length=10, blank=True, null=True)
    update = models.DateTimeField(auto_now=True)
    timestamp = models.DateTimeField(auto_now_add=True)
    def __str__(self):
        return "{}--{}".format(self.business, self.title)
    def save(self, force_insert=False, force_update=False, using=None,
             update_fields=None):
        if not self.title == "":
            self.slug = slugify(self.title)
        super(Rule, self).save()
I don't have any problem with saving English value records in slug but when I wanna save Persian strings I'm encountered with blank field, although I wrote ALLOW_UNICODE_SLUGS = True in the settings.py file.
What should I do?
 
     
    