Profile picture (or any file) uploading with Grape + Trailblazer + CarrierWare
This article is about how to implement pictures (or any other file) upload with the Grape + Trailblazer + CarrierWave stack. The first value of the stack (Grape) can be changed for anything else (Hanami, Sinatra, Rails API, etc) — it doesn’t matter. From the endpoint to the specs.
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