sequenceDiagram
participant Client
participant Backend
participant Storage
Client->>Backend: POST rails/active_storage/direct_uploads
Backend->>Backend: create ActiveStorage::Blob
Backend->>Storage: url_for_direct_upload
Storage-->>Backend: signed url
Backend-->>Client: json with signed url
Client->>Storage: PUT upload to signed url
Client->>Backend: POST entity["image"]=key
Know issue: