Migrating from v2 to v3.

[Waldecir Santos]

Hi all, 

Im migrating from django-imagekit v2 to v3, but I have some challenges, first I need to start using the older namer, I was able to do that following what we decided in this issue: https://github.com/matthewwithanm/django-imagekit/issues/373, I will move to the hasher namer once I can manually generate them all.

Now I need to have the same behaviour as django-imagekit v2, basically it shouldn't throw a an exception if file is missing and just render the url so it will return 404. I tried a custom Strategy, but not sure if it's a good approach.

+ class CustomJustInTime(object):

+     """

+     A strategy that ensures the file exists right before it's needed.

+     """

+

+     def on_existence_required(self, file):

+     │   try:

+     │   │   file.generate()

+     │   except:

+     │   │   pass

+

+     def on_content_required(self, file):

+     │   file.generate()

+

+     # def should_verify_existence(self, file):

+     #     return False

 

I need to use this because there is no way to have theses images in local development (We have around 350.000 images). 

Big Respect,

Waldecir