Attachment

File uploads are managed by @jrmc/adonis-attachment. A Lucid model declares an attachment field with @attachment({...}); uploads produce a stored file plus derived variants (thumbnails, previews, formats) driven by named converters in config/attachment.ts. Actions accept a MultipartFile from a validated form and call attachmentManager.createFromFile(file) to assign it. Storage is Drive (fs locally, S3-family in prod). URLs are pre-computed on read via a static model helper — always call it before serializing to Inertia so the frontend gets a real URL, not undefined.

Rules