why i am getting this kind of error Validation Error?

Question

ERROR: raise exceptions.ValidationError( django.core.exceptions.ValidationError: ['“” value has an invalid format. It must be in YYYY-MM-DD HH:MM[:ss[.uuuuuu]][TZ] format.']

models.py :

from django.db import models
from django.contrib.auth.models import User
from django.db.models.deletion import CASCADE
from django.utils.timezone import now
class Post(models.Model):
     sno= models.AutoField(primary_key=True)
     title= models.CharField(max_length=255)
     author = models.CharField(max_length=13)  
     slug = models.CharField(max_length=130)  
     content= models.TextField()
     timeStamp = models.DateTimeField(blank=True, null=True )

     def __str__(self):
          return self.title + ' by ' + self.author

class BlogComment(models.Model):
     sno = models.AutoField(primary_key= True)
     comment = models.TextField()
     user = models.ForeignKey(User, on_delete=models.CASCADE)
     parent = models.ForeignKey('self', on_delete=models.CASCADE, null=True)
     timestamp = models.DateTimeField(null=True, blank=True)
    

Answer 1

Django does not treat "" and None the same in this instance. So you will want to validate user input to ensure that an unset date input is handled and changed from "" to None

Check out this issue on the Django issue tracker for more info.