Multiple issues with Carrierwave + Cloudinary uploads

[yourtallness]

Hello,

I have worked around some of the issues of using Carrierwave & Cloudinary with this gem:

• need to reload asset to get content url after save
• file.path only works upon upload when you have a SanitizedFile, otherwise for already saved files there is no file.path method

Some problems and questions remain though:

• I don't understand why the js uploader in the browser always uploads the image as raw post data
• File size validations (or any validation for that matter) do not return a useful error because the mode is always 'default', returning nothing: true and not the actual model error - the result is an upload that seems to be forever loading
• Since the data is posted as binary, the content type is application/octet-stream and therefore content type validations do not work (content type can be detected by asset post-processing, but that is too late, the validation has already failed)
• The loader (preloader.gif) is showing twice, both as a broken image (because it looks for preloader.gif inside an images directory) and once as a css background, which works

Please advise,

Mark

P.S. Using version 5.1.0.

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