外键

scores/database.py

@@ -1,7 +1,17 @@
 from sqlalchemy import *
 from sqlalchemy.orm import declarative_base,sessionmaker
 
-db_url='mysql+pymysql://root:123456@127.0.0.1:3306/student_manage_system?charset=utf8mb4'
+# 导入.env参数
+import os
+from dotenv import load_dotenv
+load_dotenv( )
+DB_USER = os.getenv("DB_USER", "root")
+DB_PASSWORD = os.getenv("DB_PASSWORD", "")
+DB_HOST = os.getenv("DB_HOST", "localhost")
+DB_PORT = os.getenv("DB_PORT", "3306")
+DB_NAME = os.getenv("DB_NAME", "student_manage_system")
+
+db_url = f"mysql+pymysql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}?charset=utf8mb4"
 engine = create_engine(db_url)
 
 Base = declarative_base()

scores/main.py

@@ -1,8 +1,13 @@
-from fastapi import FastAPI
+from fastapi import FastAPI,APIRouter
 from scores.api.score_api import score_api
-from scores.database import *
-app = FastAPI(title='成绩管理系统')
+from scores.database import engine,Base
 
+# 合并接口
+Scores_API = APIRouter()
+Scores_API.include_router(score_api)
+
+# 自测接口
+app = FastAPI(title='成绩管理系统')
 app.include_router(score_api)
 
 Base.metadata.create_all(engine)

scores/model/score_model.py

@@ -1,6 +1,6 @@
 from scores.database import Base
 from datetime import datetime
-from sqlalchemy import DateTime,Column,Integer,String,Float
+from sqlalchemy import DateTime,Column,Integer,String,Float,ForeignKey
 class Score(Base):
     __tablename__='scores'
     id = Column(Integer
@@ -9,9 +9,11 @@ class Score(Base):
                  ,comment ='编号'
                  )
     sid = Column(Integer
+                 ,ForeignKey('students.id')
                  ,comment ='学生ID'
                  )
     cid = Column(Integer
+                 ,ForeignKey('classes.id')
                  ,comment ='班级ID'
                  )
     num = Column(Integer
@@ -19,6 +21,7 @@ class Score(Base):
                  )
     score = Column(Integer,nullable = False)
     tsub = Column(String(100)
+                  , ForeignKey('subject.id')
                    ,nullable = False
                    )
     create_date = Column(DateTime