Active storage variants in Rails 6>

[kallelundgren93]

Since upgrading to Rails 6, my team changed to use variants in active_storage with vips. In vips the old:

resize: "100x100"

results in a broken file for rails_admin users that uses vips.
Instead I've added a check to see if the project is using ruby-vips and in that case they will be using the resize method:

resize_to_limit: [100, 100]

Another way to go to check it, is to check:
config.active_storage.variant_processor
if that is preferrable.

[mshibuya]

Merged in, thanks!