aaa

student_system_final/dao/class_dao.py

@@ -0,0 +1,85 @@
+from sqlalchemy import and_
+from sqlalchemy.orm import Session
+from model.classes import Class          # ← 必须：操作 ORM 模型
+from scheme.classes import ClassCreate, ClassUpdate  # ← 必须：类型注解
+
+class ClassDao:
+# 新增
+    @staticmethod
+    def create_class_list(db:Session,data:ClassCreate):
+        cls = Class(
+            cid=data.cid,
+            class_name=data.class_name,
+            start_time=data.start_time,
+            headteacher=data.headteacher,
+            flag=1
+        )
+        db.add(cls)
+        db.commit()
+        db.refresh(cls)
+        return cls
+
+    # 查询，查询单个
+    @staticmethod
+    def get_class(db:Session,class_id:int):
+        return db.query(Class).filter(and_(Class.cid==class_id,Class.flag==1)).first()
+  # def get_all_class(db:Session):
+  #       return db.query(Class).filter(Class.flag==1).all()
+    @staticmethod
+    def get_class_list(db:Session,cid:None,class_name:None,headteacher:None,page=1, size=10):
+        query = db.query(Class).filter(Class.flag == 1)
+        if cid:
+            query=query.filter(Class.cid == cid)
+        if class_name:
+            query=query.filter(Class.class_name == class_name)
+        if headteacher:
+            query=query.filter(Class.headteacher == headteacher)
+        total = query.count()
+        items=query.order_by(Class.cid).offset((page-1)*size).limit(size).all()
+        return total, items
+
+    # 查询全部
+    @staticmethod
+    def get_all_class(db:Session):
+        return db.query(Class).filter(Class.flag==1).all()
+    # 查询学生
+    @staticmethod
+    def get_class_student(db:Session,class_id:int):
+        cls = ClassDao.get_class(db,class_id)
+        if not cls:
+            return None
+        return {"id": Class.student.sid, "name": Class.student.name, "age": Class.student.age, "gender": Class.student.gender}
+    #查询老师
+    @staticmethod
+    def get_class_teacher(db:Session,class_id:int):
+        cls = ClassDao.get_class(db,class_id)
+        if not cls:
+            return None
+        return {"id":Class.teachers.id,"name":Class.teachers.name}
+
+    # 更新
+    @staticmethod
+    def update_class(db:Session,class_id:int,data:ClassUpdate):
+        cls = ClassDao.get_class(db,class_id)
+        if not cls:
+            return None
+        if cls.class_name:
+            cls.class_name = data.class_name
+        if cls.headteacher:
+            cls.headteacher = data.headteacher
+        db.commit()
+        return cls
+
+    # 删除
+    @staticmethod
+    def delete_class(db:Session,cid:int):
+        cls = ClassDao.get_class(db,cid)
+        if not cls:
+            return False
+        cls.flag=0
+        db.commit()
+        db.refresh(cls)
+        return cls
+
+
+