You are trying to add a non-nullable field “new_field” to userprofile without a default

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I know that from Django 1.7 I don"t need to use South or any other migration system, so I am just using simple command python manage.py makemigrations

However, all I get is this error:

You are trying to add a non-nullable field "new_field" to userprofile without a default;
we can"t do that (the database needs something to populate existing rows).

Here is models.py:

class UserProfile(models.Model):
    user = models.OneToOneField(User)
    website = models.URLField(blank=True)
    new_field = models.CharField(max_length=140)

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You are trying to add a non-nullable field "new_field" to userprofile without a default __del__: Questions

import time
time.sleep(5)   # Delays for 5 seconds. You can also use a float value.

import time
while True:
    print("This prints once a minute.")
    time.sleep(60) # Delay for 1 minute (60 seconds).

from time import sleep
sleep(0.1) # Time in seconds

You are trying to add a non-nullable field "new_field" to userprofile without a default __del__: Questions

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