API Conventions

All system / business endpoints share one enforced convention; deviations require discussion.

Full API reference: Apidog. This page covers conventions and a key endpoint cheat sheet.

Route prefixes

Prefix	Purpose
/api/v1/auth	Authentication (public)
/api/v1/route	Route delivery (constant routes / user routes)
/api/v1/system-manage/*	System modules (users / roles / menus / APIs / dictionary)
/api/v1/business/<module>/*	Business modules (autodiscovered)

Response format

All success responses are:

{ "code": "0000", "msg": "OK", "data": { ... } }

Field naming is uniformly camelCase — SchemaBase's alias_generator=to_camel_case handles it; Model.to_dict() outputs camelCase too. Don't return raw dicts; don't hand-roll snake_case.

For codes / frontend mapping see Response codes.

Path & method

Operation	Method + path	Body / Params
List / search	POST /resources/search	Body extends PageQueryBase
Single	GET /resources/{id}	—
Create	POST /resources	Body: XxxCreate
Update	PATCH /resources/{id}	Body: XxxUpdate
Delete one	DELETE /resources/{id}	—
Batch delete	DELETE /resources	Body: {ids: [...]} (CommonIds)
Sub-resource	GET /resources/{id}/sub	—
Derived query	GET /resources/tree, GET /resources/options	—
Instance action	POST /resources/{id}/action-name	optional body
Collection action	POST /resources/batch-offline, POST /resources/refresh	body

Constraints:

• No trailing slashes (/users ✅, /users/ ❌)
• Multi-word paths use kebab-case (/batch-offline, /constant-routes, /user-routes)
• Resource names are plural (/users, /roles, /warehouses)
• "Search" uniformly uses POST /resources/search instead of GET ?...=... — supports complex bodies (arrays, nesting)

Field naming

• Request body / query: camelCase (Pydantic validate_by_name=True accepts snake_case too, but the frontend always sends camelCase)
• Response data: camelCase — use schema.model_dump(by_alias=True) or model.to_dict()

Pagination

Body extends PageQueryBase:

from app.utils import PageQueryBase

class WarehouseSearch(PageQueryBase):
    name: str | None = None

Fixed fields:

Field	Default	Purpose
current	1	page (≥ 1)
size	10	page size (1–1000)
orderBy	null	sort fields, - prefix = desc, e.g. ["-createdAt", "id"]

Response:

{
  "code": "0000", "msg": "OK",
  "data": {
    "records": [...],
    "total": 42,
    "current": 1,
    "size": 10
  }
}

IDs are sqids

All public-facing resource IDs are sqid strings (e.g. Yc7vN3kE) — never raw auto-increment ints. Use SqidId in Pydantic schemas and SqidPath for path params:

from app.utils import SqidId, SqidPath, SchemaBase

class WarehouseUpdate(SchemaBase):
    parent_id: SqidId | None = None        # body field

@router.get("/warehouses/{item_id}")
async def get_dept(item_id: SqidPath):     # path param
    ...

SqidId decodes the sqid to int on input and re-encodes to sqid on output. SqidPath decodes only. See Sqids.

CRUDRouter — don't hand-write

The default way to add a resource's routes is CRUDRouter — 6 standard REST routes in a single declaration:

from app.utils import CRUDRouter, SearchFieldConfig, require_buttons

dept_crud = CRUDRouter(
    prefix="/warehouses",
    controller=warehouse_controller,
    create_schema=WarehouseCreate,
    update_schema=WarehouseUpdate,
    list_schema=WarehouseSearch,
    search_fields=SearchFieldConfig(
        contains_fields=["name", "code"],
        exact_fields=["status"],
    ),
    summary_prefix="Warehouse",
    soft_delete=True,
    tree_endpoint=True,
    action_dependencies={
        "create": [require_buttons("B_INVENTORY_WAREHOUSE_CREATE")],
        "update": [require_buttons("B_INVENTORY_WAREHOUSE_EDIT")],
        "delete": [require_buttons("B_INVENTORY_WAREHOUSE_DELETE")],
        "batch_delete": [require_buttons("B_INVENTORY_WAREHOUSE_DELETE")],
    },
)
router = dept_crud.router

To customize a route, use @crud.override("list") — don't redeclare the same path on the router; it'll be shadowed by _OrderedRouter reordering. Full API in CRUDRouter.

Auth dependencies

Dependency	Purpose
DependAuth	JWT validation only, no permission check (captcha, impersonate, user info)
DependPermission	On top of DependAuth, matches (method, path) against role.apis (default for business endpoints)
require_buttons("B_X", ...)	Any one passes; otherwise 2203
require_buttons(..., require_all=True)	All required; otherwise 2202
require_roles("R_X", ...)	Same as buttons but for roles; codes 2204 / 2205

R_SUPER bypasses everything. See Auth.

Endpoint cheat sheet

Auth (/api/v1/auth, public)

Method	Path	Purpose
POST	/login	Username + password
POST	/captcha	Send phone captcha
POST	/code-login	Captcha login
POST	/register	Register (default role R_USER)
POST	/refresh-token	Refresh access token
GET	/user-info	Current user info + roles + buttons (DependAuth)
PATCH	/password	Change password (DependAuth, increments token version)
POST	/impersonate/{user_id}	Super-admin impersonate (DependPermission + super check)

Route (/api/v1/route)

Method	Path	Purpose
GET	/constant-routes	Public routes (login / error pages) from Redis
GET	/user-routes	Current user's menu tree (DependAuth)
GET	/exists?name=xxx	Check if a route name exists (DependAuth)

System manage (/api/v1/system-manage, all behind DependPermission)

Each follows the standard 6-route convention:

Resource	Prefix	Notes
Users	/users	create / update are @overrided for password hashing + role association
Roles	/roles	Includes GET /roles/{id}/menus, PATCH /roles/{id}/menus, etc.
Menus	/menus	Includes GET /menus/tree, GET /menus/pages
APIs	/apis	Read-only (list / get / tree / tags only); records are reconciled by refresh_api_list() at startup
Dictionary	/dictionaries	Includes GET /dictionaries/{type}/options (5-min Redis cache)

Business modules (/api/v1/business/<name>)

Per-module. Business module endpoints are maintained by each module api/ package and init data.

Response wrappers

Class	Purpose	Typical scenario
Success(data=...)	Single / non-paginated	get / create / update
SuccessExtra(data={"records": [...]}, total, current, size)	Paginated	list / search
Fail(code=Code.X, msg="...")	Business failure	rule violation
Custom(code, status_code, msg, data, **kwargs)	Anything	rare custom status_code

OpenAPI response model

Success etc. are JSONResponse subclasses; FastAPI cannot infer the response shape. To document accurately, add response_model=ResponseModel[UserOut] or PageResponseModel[UserOut]. See Schema base.

Static-path priority inside the router

CRUDRouter uses _OrderedRouter: every add_api_route triggers a re-sort that moves paths without {...} to the front. This prevents GET /resources/{id} from shadowing later-added GET /resources/tree. Don't bypass this (e.g. by mutating router.routes.append(...)).