How can I allow django admin to set a field to NULL

0 votes
I've set my Model field to null=True, which allows NULL in MySQL, but I can't seem to assign NULL to the field through Django Admin. I've tried also setting blank=True, but that just sets the field to an empty string.

Any ideas?
Jun 12, 2020 in Java-Script by kartik
• 37,520 points
4,818 views

1 answer to this question.

0 votes

Hello @kartik,

Try to overwrite the save() method of the model, to check for empty values:

class MyModel(models.Model):

    my_nullable_string = models.CharField(max_length=15, null=True, blank=True)

    def save(self, *args, **kwargs):
         if not self.my_nullable_string:
              self.my_nullable_string = None
         super(MyModel, self).save(*args, **kwargs)

Hope this work!

Thank you!!

answered Jun 12, 2020 by Niroj
• 82,840 points

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