c648bdf560
Three core pages and four plugin pages each imported qrcode and jsbarcode directly, and each carried its own answer to the same questions: what margin, what width, which error correction, how big a module must be before a scanner can read it. The answers had already drifted - margin 0 in one place and 2 in another, width 150 against 160 - and on a label that is the difference between a sticker that scans and one that does not. frontend/src/utils/codes.js owns it now: the label-stock presets, the quiet-zone and margin defaults, CODE128 with no printed value, and the printer-resolution arithmetic that only the Tech Tools generator had. A view passes what is specific to its own label and nothing else - MachineBadge still asks for CODE39, because the badge readers predate the shop-floor scanners and decode nothing else, and that is exactly the kind of thing a call site should say out loud. views/print/qrLogo.js is folded in rather than left as a second half-shared helper that only some of the pages reached into. The check script now fails a build that imports either library outside that module. Without it this re-forks within a month: the next label page starts by copying the nearest existing one, which is how it happened the first time. Tests cover the part no amount of looking at a screen verifies - a QR that looks fine at 96 dpi on a monitor can be unreadable at 203 dpi on half-inch stock.
Printedparts plugin
3D-printed parts inventory + kiosk checkout
This plugin was generated by flask plugin new printedparts. It satisfies the framework contract out of the box. Replace the example model and routes with your domain.
What's here
plugin.py- thePrintedpartsPluginclass extendingBasePlugin. Editinit_appfor custom setup,on_installto seed reference data.models/printedparts.py- example Asset extension table. Replaceexamplefieldwith your domain fields.api/routes.py- example list and detail endpoints. Add CRUD as needed.schemas/__init__.py- marshmallow schema stub for request/response validation.tests/test_plugin.py- smoke tests asserting contract compliance.manifest.json- plugin metadata. Bumpversionon changes; keepcore_versionrange broad.
Common edits
| You want to... | Do this |
|---|---|
| Add a hook (search, navigation, dashboard widget) | Override the method in PrintedpartsPlugin. See docs/PLUGIN-HOOKS.md. |
| Accept external collector data | Override get_collector_schema() to return a JSON Schema. See ADR-006. |
| Add another model | Create models/<other>.py, export it in models/__init__.py, return it in get_models(). |
| Add a CLI command | Override get_cli_commands() returning a list of Click commands. |
Frontend
Vue components for this plugin live under frontend/src/views/printedparts/ (per project convention). Backend scaffolding does not generate frontend yet; copy from an existing plugin's view files (e.g., frontend/src/views/network/) as a starting point.
Install and run
flask plugin install printedparts
flask db migrate -m "Add printedparts plugin tables"
flask db upgrade
pytest plugins/printedparts/tests/
References
docs/PLUGIN-HOOKS.md- canonical hook referencedocs/PLUGIN-QUICKSTART.md- 30-minute walkthroughmigrations/adr/ADR-001-asset-as-platform-contract.md- the platform contractmigrations/adr/ADR-002-plugin-versioning.md- versioning rules
Why the kiosk take endpoint is unauthenticated
POST /api/printedparts/kiosk/take is the product's first open WRITE (every
other kiosk endpoint is a read). Accepted deliberately, against the criteria
in docs/proposals/printedparts-plugin.md:
- Decrement-only: it can reduce stock of an active item, nothing else.
- Fully attributed: it refuses to act without a badge that resolves under the site policy; every action lands in the ledger with SSO + name + time.
- Bounded blast radius: worst case is stock counts driven low - visible in the ledger and reversible with an adjust.
- Physically rate-limited: it serves a touch screen on the shop floor; nothing enumerable, nothing worth scraping.
Any future open-write endpoint must clear the same bar.