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
• 37,510 points
1,287 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
• 82,720 points

Related Questions In Java-Script

0 votes
1 answer

How can I determine if a variable is 'undefined' or 'null'?

Hello @kartik, You can use the qualities of ...READ MORE

answered Aug 28, 2020 in Java-Script by Niroj
• 82,720 points
82 views
0 votes
1 answer

How can I make a div stick to the top of the screen once it's been scrolled to?

Hello @kartik, Using javascript: var initTopPosition= $('#myElementToStick').offset().top; ...READ MORE

answered Sep 4, 2020 in Java-Script by Niroj
• 82,720 points
91 views
+1 vote
1 answer

How can we send message multiple time to a specific person or group in whatsapp using loop?

Hii @kartik,  This is simple task to send single ...READ MORE

answered Feb 28, 2020 in Java-Script by Niroj
• 82,720 points
1,822 views
0 votes
1 answer

How do I turn a string to a json in Node.js?

Hello Kartik, Use the JSON function  JSON.parse(theString) ...READ MORE

answered Apr 24, 2020 in Java-Script by Niroj
• 82,720 points
172 views
+1 vote
1 answer

How to make anchor tag with routing using Laravel?

Hey @kartik, First you have to go to ...READ MORE

answered Mar 18, 2020 in Laravel by Niroj
• 82,720 points
7,117 views
0 votes
1 answer

What is redirection in Laravel?

Named route is used to give specific ...READ MORE

answered Mar 18, 2020 in Laravel by Niroj
• 82,720 points
814 views
0 votes
1 answer

How to install Laravel via composer?

Hello, This is simple you just need to ...READ MORE

answered Mar 23, 2020 in Laravel by Niroj
• 82,720 points
632 views
+1 vote
1 answer

What are named routes in Laravel and How can specify route names for controller actions?

Hey @kartik, Named routing is another amazing feature of ...READ MORE

answered Mar 23, 2020 in Laravel by Niroj
• 82,720 points
7,538 views
0 votes
1 answer

How can I send a message to a particular client with socket.io?

Hii, You can try the code below: io.to(socket.id).emit("event", data); whenever ...READ MORE

answered Apr 27, 2020 in Java-Script by Niroj
• 82,720 points
11,585 views
0 votes
2 answers

How can I set a session var using javascript and get it via php code?

Yes it is possible. You can either ...READ MORE

answered Aug 9, 2020 in Java-Script by Okugbe
• 280 points
7,339 views