1、初衷

FastAPI 官方示例中路由，模型需要重復(fù)內(nèi)容相對較多，考慮簡化方案，可采用模板代碼生成，或動態(tài)建模簡化，現(xiàn)通過后者驗(yàn)證。

2、實(shí)現(xiàn)

from typing import List
from fastapi import FastAPI
from starlette.requests import Request
from pydantic import BaseModel, create_model
import json

app = FastAPI()

config_json = [{
        "table": "User",
        "columns": [{
            "code": "UserID",
            "c_name": "用戶編號",
            "e_name": "user_id",
            "type": "int"
        },{
            "code": "UserName",
            "c_name": "用戶名稱",
            "e_name": "user_name",
            "type": "string"
        }]
    },
    {
        "table": "Role",
        "columns": [{
            "code": "RoleID",
            "c_name": "角色編號",
            "e_name": "role_id",
            "type": "int"
        },{
            "code": "RoleName",
            "c_name": "用戶名稱",
            "e_name": "role_name",
            "type": "string"
        }]
    }
]


def load_api():
    for temp in config_json:
        # 模型參數(shù)
        kwargs = {}

        # 設(shè)置參數(shù)
        for col in temp["columns"]:
            if col["type"] == "int":
                kwargs[col["code"]] = 1
            elif col["type"] == "string":
                kwargs[col["code"]] = (str,...)

        DynamicFoobarModel = create_model(temp["table"], **kwargs)

        @app.get("/" + temp["table"])
        async def read_item(request: Request, skip: int = 0, limit: int = 10):
            # 如果想獲取路由，在處理方法中不能直接使用 temp["table"] , 會被覆蓋為最后一個值，可以使用request 獲取
            return {"type": "get" , "route：": request.url.path}
        @app.post("/" + temp["table"])
        async def update_item(request: Request, item: DynamicFoobarModel):
            return {"type": "post" , "route：": request.url.path , "kwargs": item.to_string()}


if __name__ == '__main__':
    load_api()
    import uvicorn
    uvicorn.run(app, host='127.0.0.1', port=8000)

# 避免命令行啟動，修改為 run
# 命令行啟動方式為：uvicorn 文件名:app --reload

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