105 lines
3.2 KiB
Python
105 lines
3.2 KiB
Python
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from sqlalchemy.orm import Session
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from model.student_info import Student
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from schemas.student_info import StudentCreate, StudentUpdate,StudentDate, StudentResponse
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#查询 查询学生信息（按编号、姓名、班级条件筛选）
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#orm动态查询
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def list_students(db: Session,id: str = None,name: str = None,class_name: str = None):
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# 已逻辑删除的学生
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query = db.query(Student).filter(Student.is_deleted == False)
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# 查询学生信息（支持按编号、姓名、班级等条件筛选）。
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if id:
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query = query.filter(Student.id == id)
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if name:
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query = query.filter(Student.name.like(f"%{name}%"))
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if class_name:
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query = query.filter(Student.class_name == class_name)
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# 执行查询并返回
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return query.all()
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#2创建新的学生
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def create_student(db: Session,student: StudentCreate):
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data = {}
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#遍历
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for field_name in student.model_fields:
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if field_name == "id":
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val = student.id
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elif field_name == "name":
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val = student.name
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elif field_name == "gender":
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val = student.gender
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elif field_name == "class_no":
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val = student.class_name
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elif field_name == "major":
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val = student.major
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elif field_name == "age":
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val = student.age
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elif field_name == "hometown":
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val = student.hometown
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else:
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val = None
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data[field_name] = val
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# 赋值给ORM
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db_student = Student(
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id=data["id"],
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name=data["name"],
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gender=data["gender"],
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class_name=data["class_name"],
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major=data.get("major"),
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age=data.get("age"),
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hometown=data.get("hometown")
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)
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db.add(db_student)
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db.commit()
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db.refresh(db_student)
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return db_student
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# 获取特定学生信息
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# 严格按照需求文档：GET /students/{id}，从URL路径中获取学生学号
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def get_student(db: Session,id: str):
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# 查询：id字段等于url传过来的id
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student = db.query(Student).filter(Student.id == id,).first()
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if student is None:
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return None
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return student
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# 更新学生信息 /students/{id} id为学号
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def update_student( db: Session,id: str, payload: StudentUpdate):
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# 根据学号查询学生
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student = db.query(Student).filter(Student.id == id).first()
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# 学生是否存在
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if student is None:
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return None
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if payload.name is not None:
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student.name = payload.name
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if payload.age is not None:
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student.age = payload.age
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if payload.class_name is not None:
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student.class_name = payload.class_name
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# 保存到数据库
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db.commit()
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db.refresh(student)
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# 返回更新后的学生
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return student
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# 逻辑删除学生。逻辑上删除，实际上未删除
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def delete_student(db: Session,id: str):
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# 根据学号查询
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student = db.query(Student).filter(Student.id == id, Student.is_deleted == False).first()
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# 判断学生是否存在
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if student is None:
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return None
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# 逻辑删除：把is_deleted改成True，不是真的删掉这条记录
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student.is_deleted = True
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db.commit()
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return {"message": f"学生 {id} 已逻辑删除，数据仍保留在库中"}
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