this is my model:

from django.db import models


class Topic(models.Model):
    name = models.CharField(max_length=200)
    
    def __str__(self):
        return self.name
    

class Article(models.Model):
    topic = models.ForeignKey(Topic, on_delete=models.CASCADE) 
    title = models.CharField(max_length=6000)

    featured_image = models.ImageField(null=True,blank=True, default="default.jpg") 
                                                            # i want to add this filed
    content = models.TextField() 
    created = models.DateTimeField(auto_now_add=True) 
    updated = models.DateTimeField(auto_now=True) 

    def __str__(self):
        return self.title

i installed python -m pip install pillow and this is my setting configuration:

 import os  

STATIC_URL = '/static/'  

STATICFILES_DIRS = [     
    BASE_DIR / 'static'  
]

in the admin panel i am expecting the apparition of featured image filed that sets the image with the default.jpg

if the on the article creation the admin doesn’t insert a image.

After i run python manage.py makemigrations it is always giving me this:

It is impossible to change a nullable field ‘topic’ on article to non-nullable without providing a default. This is because the database needs something to populate existing rows.

Please select a fix:

1. Provide a one-off default now (will be set on all existing rows with a null value for this column)

2. Ignore for now. Existing rows that contain NULL values will have to be handled manually, for example with a RunPython or RunSQL operation.

3. Quit and manually define a default value in models.py.

Select an option:

No matter what i pick i still don’t see the filed in the Django admin