Custom ImageField to modify the image using pillow before saving

[granite bloom]

i guess, i will have to override the attr_class. But I don't know where is the raw file object to get and replace with the modified image data.

[granite bloom]

Custom ImageField to modify the image using pillow before saving

[chilly token]

You should probably do it in the save method rather than a custom field

Just override the save method in the class

[sharp juniper]

You could also subclass your ImageField

from django.db.models import ImageField 

class MyImageField(ImageField):
def __init__(self, *args, **kwargs):
        ....
        super().__init__(*args, **kwargs)
       ....

https://github.com/django/django/blob/main/django/db/models/fields/files.py

Line 382