What is the difference between null=True and blank=True in Django?

In Django, null=True and blank=True are both used to specify options for fields in a model.

null=True specifies that the field can be set to NULL in the database. This means that the field can be left empty or unassigned in the model, and the database will store it as NULL instead of a default value. For example:

class MyModel(models.Model):
    my_field = models.CharField(max_length=255, null=True)

blank=True specifies that the field can be left blank when creating or updating a model instance. This means that the field can be left empty or unassigned in a form, and the model will still be valid. For example:

class MyModel(models.Model):
    my_field = models.CharField(max_length=255, blank=True)

Watch a video course Python - The Practical Guide

It's worth noting that blank=True implies null=True. So, if you set blank=True, you don't need to set null=True as well.

class MyModel(models.Model):
    my_field = models.CharField(max_length=255, blank=True, null=True)

In this example, my_field can be left blank or unassigned both in the form and in the database.