Vishesh 'ironeagle' Bangotra
7f951f3fe7
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8 lines
2.9 KiB
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8 lines
2.9 KiB
JSON
{
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"module": "wiki_reference_app_domain_and_api",
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"content": {
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"path": "wiki_reference_app_domain_and_api",
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"docstring": "# Domain & API — the resource axis\n\nEvery aggregate follows the same four-file slice\n([CRUD Template](../lib/21_crud_template/)); walk `parents` first, then\n`appointments` when you need foreign keys.\n\n## The slice, end to end (parents)\n\n```\ndomain/parents/\n models.py # framework-free Pydantic model (id optional)\n ports/\n db.py # ParentDocument(Parent, BaseDocument) + create_parent_repo()\n service.py # ParentCrudsService(CrudsServiceAdaptor[...]) + get_parent_service()\ninterfaces/parents/\n routes.py # list/create/get/update/delete — names == operationIds\n```\n\nWiring happens in exactly one place — the composition root\n`init.py`:\n\n```python\nparent_repo = create_parent_repo()\n_resources[\"parent_svc\"] = get_parent_service(parent_repo)\n```\n\nRoutes resolve the service from app state through the shared helper\n(`interfaces/_common.py`):\n\n```python\nasync def list_parents(request: Request, limit: int = 20, offset: int = 0) -> dict:\n docs = await svc(request, \"parent\").search({})\n return paginate([dump(d) for d in docs], limit, offset)\n```\n\n## The spec is the contract\n\n`openapi.yaml` is OpenAPI 3.1 and the\nsingle source of truth: `main.py` builds an `OpenAPIFirstApp` that binds each\n`operationId` to a function of the same name in `interfaces/openapi.py` (a flat\nre-export of every routes module). There are no decorator routers.\n\nThe x- extension fields on schemas and properties are what make the admin\nclient render itself — see [Auto-Rendered Admin](../lib/40_ui_admin/) and\nthe worked `Job` schema (enum selects, hidden fields, filterable columns).\n\n## Foreign keys (appointments)\n\n`Appointment` declares `pet`, `vet`, `treatment` as `dict | int | None`. The\nwrite path normalizes bare ids through `expand_ref`; the read path returns\nfully expanded objects:\n\n```python\npet = await expand_ref(svc(request, \"pet\"), body.get(\"pet\"), \"pet\")\n```\n\nThe list endpoint additionally filters by date prefix and embedded fk ids —\nclient-side over the repository result, the pattern for small reference data.\n\n## Ids on the wire\n\nThe domain models declare `id: int | None = None` and documents use the\n**integer-id** repository variants (`infra/db/repos/mongo_int.py`,\n`create_repo()` in `domain/*/ports/db.py`, `REPO_BACKEND=memory|mongo`). This\nkeeps the OpenAPI `id: integer` contract, the in-memory demo store, and the\nMongo persistence layer consistent.\n\n## Tests\n\n- `tests/integration/test_openapi_app_builds.py` — generic gate: every\n `operationId` resolves and the app builds. Copy it verbatim.\n- `tests/unit/test_jobs_routes.py` — the pattern for route unit tests with a\n service double (no HTTP client needed).\n",
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"objects": {}
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}
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} |