上传文件至「/」

database.py

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+from sqlalchemy import *
+from sqlalchemy.orm import declarative_base,sessionmaker
+
+db_url = "mysql+pymysql://root:123456@127.0.0.1:3306/ai0824?charset=utf8mb4"
+engine = create_engine(db_url)
+
+Base = declarative_base()
+Session = sessionmaker(bind=engine
+                       ,autoflush=False
+                       ,autocommit = False
+                       )
+
+def get_db():
+    db = Session()
+    try:
+        yield db
+    finally:
+        db.close()

main.py

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+from fastapi import FastAPI
+from day23sk.api.order_api import order_api
+
+app = FastAPI()
+
+app.include_router(order_api,tags=['订单接口'],prefix='/orders')
+
+
+if __name__ == '__main__':
+    import uvicorn
+    uvicorn.run("main:app",host='0.0.0.0',port=12345)

order_api.py

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+from fastapi import APIRouter,Depends,HTTPException
+from day23sk.schema.order_request import OrderRequest,OrderResponse
+from day23sk.database import get_db
+from day23sk.model.order_model import Order
+from day23sk.dao.order_dao import add_student_dao,update_orders_dao,delete_orders_dao,get_orders_dao
+
+order_api = APIRouter()
+
+
+@order_api.post('',response_model=OrderResponse)
+def add_orders(order:OrderRequest,db=Depends(get_db)):
+    d = order.model_dump()
+    r = add_student_dao( o=d,db=db )
+    if not r:
+        raise HTTPException(status_code=500,detail='服务器繁忙，请稍后添加！')
+    return OrderResponse(totals=1,data=d)
+
+@order_api.put('/{id}')
+def get_orders(order:OrderRequest,id:int,db=Depends(get_db)):
+    d = order.model_dump(exclude_unset=True)
+    r = update_orders_dao( id=id,update_data=d,db=db )
+    if not r:
+        raise HTTPException(status_code=500, detail='没有更新！')
+    return {'code':200,'totals':r,'detail':'更新成功'}
+
+@order_api.get('')
+def get_orders(order_title:str,db=Depends(get_db)):
+    r = get_orders_dao( order_title=order_title ,db=db )
+    if r is None:
+        raise HTTPException(status_code=500,detail='订单异常！')
+    if not r:
+        raise HTTPException(status_code=404,detail="订单不存在")
+    return [{"order_id":i.id,"order_title":i.order_title,"user_id":i.userid,"create_date":i.create_date,"update_date":i.update_date} for i in r]
+@order_api.delete('/{id}')
+def get_orders(id:int,db=Depends(get_db)):
+    r = delete_orders_dao( id=id ,db=db)
+    if r is None:
+        raise HTTPException(status_code=500, detail='删除异常，稍后操作！')
+    if r == 0:
+        raise HTTPException(status_code=404, detail='订单不存在！')
+    return {'code': 200, 'totals': r, 'detail': '删除成功'}
+
+# 要求：
+'''
+①把剩下的delete、get查询接口完成dao层的分层 (√)
+②新增一个user_info的表，有外键联系，oder订单表外键依赖user_info，改造一下订单post的接口，新增订单前，判断下用户的id是否存在user_info表里
+'''
+
+
+

order_dao.py

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+from day23sk.model.order_model import Order
+
+
+def add_student_dao(o,db):
+    try:
+        o1 = Order( **o)  # 将字典解析成键值对关键字参数输入 title = xxx, userid = XXX
+        db.add(o1)
+    except Exception:
+        db.rollback()
+        return False
+    else:
+        db.commit()
+        return True
+
+
+
+def update_orders_dao(id,update_data,db):
+    try: # 数据更新是有返回值的，返回的是影响的行数
+        rows = db.query( Order ).filter( Order.id == id ).update( update_data )
+    except Exception:
+        db.rollback()
+        return False
+    else:
+        db.commit()
+        return rows
+
+def delete_orders_dao(id,db):
+    try:
+        rows = db.query( Order ).filter( Order.id == id ).delete()
+    except Exception:
+        db.rollback()
+        return None
+    else:
+        db.commit()
+        return rows
+
+def get_orders_dao(order_title,db):
+    try:
+        rows = db.query( Order ).filter( Order.title == order_title ).all()
+    except Exception:
+        db.rollback()
+        return False
+    else:
+        db.commit()
+        return rows