Here, is the main difference of null=True and blank=True:
The default value of both null and blank is False. Both of these values work at field level i.e., whether we want to keep a field null or blank.
null=True will set the field’s value to NULL i.e., no data. It is basically for the databases column value.
date = models.DateTimeField(null=True)
blank=True determines whether the field will be required in forms. This includes the admin and your own custom forms.
title = models.CharField(blank=True) // title can be kept blank.
In the database ("") will be stored.
null=True blank=True This means that the field is optional in all circumstances.
epic = models.ForeignKey(null=True, blank=True)
// The exception is CharFields() and TextFields(), which in Django are never saved as NULL. Blank values a
