Exported transloadit derivatives not using pretty_location?

[ksouthworth]

I've got my Transloadit transloadit_processor and transloadit_saver methods hooked up as shown in the docs here:
https://github.com/shrinerb/shrine-transloadit#usage

after calling

attacher.transloadit_save(response["results"])
attacher.derivatives

my derivatives are there, however their paths on the storage (S3) seems to be using the default locations, instead of going through the code I have in my custom generate_location(io, name: nil, record: nil, derivative: nil, metadata: {}, **options) method as part of the pretty_location plugin.

In my generate_location implementation I'm nesting files underneath a few directories, something like

accounts/{account_id}/responses/{response_id}/videos/{video_id}

This is working for the main file when I upload it through Shrine, but not for any of the derivatives I'm pulling in via the transloadit_saver and merge_derivatives methods.

Basically, the uploaded file is being correctly stored at the S3 path:

accounts/123/responses/456/videos/789/original.webm

but the derivatives coming in via shrine-transloadit are not, instead shrine is sticking them at the root of the storage in a path like:

bc/97dbdbdc9d4f02be1475d647b263da/original-14a4d011c346d4b657467cd4b7bb74d6.webm

Is there a way to make these transloadit derivatives go through the same pretty_location logic so I can store them alongside the original?

Thanks!

[janko]

Yes, Shrine won't use its own #generate_location method, as it doesn't have all the information this method might expect.

You can pass the :path parameter to the #transloadit_export_step method you're calling in your Attacher.transloadit_processor block, which will get forwarded to the underlying step, e.g:

import = file.transloadit_import_step
encode = transloadit_step "encode", "/video/encode", use: import

# pass derivative name, filename metadata for extension, and attacher context
encode_location = store.generate_location(nil, derivative: :encoded, metadata: { "filename" => "name.mp4" }, **context)
export = store.transloadit_export_step use: encode, path: encode_location

assembly = transloadit.assembly(steps: [import, encode, export])
assembly.create!

[ksouthworth]

@janko your recommendation is working, thanks!