第一次提交

dao/teachers_dao.py

@@ -0,0 +1,141 @@
+from datetime import date
+
+from sqlalchemy.orm import sessionmaker, declarative_base, Session, Query, selectinload
+
+from model.teachers import Teacher
+
+#添加方法
+def add_teachers(db:Session ,t_name:str, t_gender:str, t_phone:str, t_subject:str,t_created:date):
+    t1=Teacher(
+        t_name=t_name,
+        t_gender=t_gender,
+        t_phone=t_phone,
+        t_subject=t_subject,
+        t_created=t_created,
+        t_delete=False
+    )
+    try:
+        db.add(t1)
+        db.commit()
+        db.refresh(t1)
+        return {"msg":"添加成功"}
+    except Exception as e:
+        print(e)
+        return {"msg":"删除成功"}
+
+
+#删除方法
+def del_teachers(db:Session,t_id:int,t_name:str):
+    teacher=db.query(Teacher).filter(Teacher.t_id==t_id,
+                                     Teacher.t_name==t_name,
+                                     Teacher.t_delete==False
+                                     ).first()
+    if not teacher:
+        return {"msg":"没找到老师信息"}
+    #逻辑删除
+    try:
+        teacher.t_delete=True
+        db.commit()
+        return {"msg":"删除成功"}
+    except Exception as e:
+        print("删除异常",e)
+        return {"msg":"删除失败"}
+
+#修改老师
+def update_teachers(db:Session,t_id:int,new_name,new_gender,new_phone,new_subject,new_created):
+    teacher=db.query(Teacher).filter(Teacher.t_id==t_id,Teacher.t_delete==False).first()
+    if not teacher:
+        return {"msg":"没找到老师信息"}
+    teacher.t_name=new_name
+    teacher.t_gender=new_gender
+    teacher.t_phone=new_phone
+    teacher.t_subject=new_subject
+    teacher.t_created=new_created
+    try:
+        db.commit()
+        db.refresh(teacher)
+        return {"msg":"修改成功"}
+    except Exception as e:
+        print(e)
+        return {"msg": "修改失败"}
+
+# 查询所有老师信息
+# 分页
+def search_teachers(db:Session,page:int,size:int):
+    start = (page - 1) * size
+    teachers=db.query(Teacher.t_id,
+                      Teacher.t_name,
+                      Teacher.t_gender,
+                      Teacher.t_phone,
+                      Teacher.t_subject,
+                      Teacher.t_created).filter(Teacher.t_delete==False)
+    teach=teachers.offset(start).limit(size).all()  #跳过多少行,查询当前页数据
+    total=teachers.count()
+    l1=[]
+    #将查出来的值存入列表
+    for i in teach:
+        bb={
+            "t_id":i[0],
+            "t_name":i[1],
+            "t_gender":i[2],
+            "t_phone":i[3],
+            "t_subject":i[4],
+            "t_created":i[5].strftime("%Y-%m-%d") # 将字符串转时间
+        }
+        l1.append(bb)
+    return {
+        "total":total,
+        "page":page,
+        "size":size,
+        "list":l1
+    }
+
+
+
+#查询单个老师信息
+#根据id查
+def search_teachers_by_id(db:Session,t_id:int):
+    teachers=db.query(Teacher).filter(Teacher.t_id==t_id,Teacher.t_delete==False).first()
+    if not teachers:
+        return None
+    l2={
+        "t_id":teachers.t_id,
+        "t_name":teachers.t_name,
+        "t_gender":teachers.t_gender,
+        "t_phone":teachers.t_phone,
+        "t_subject":teachers.t_subject,
+        "t_created":teachers.t_created.strftime("%Y-%m-%d")
+    }
+    return l2
+
+#查看带班信息
+def get_teacher_classes(db:Session,t_id:int):
+    teacher=(db.query(Teacher).filter(Teacher.t_id==t_id,Teacher.t_delete==False)
+           .options(selectinload(Teacher.classes)).first())
+    if not teacher:
+        return None
+
+    l3=[]
+    for i in teacher.classes:
+        l3.append({
+            "class_id":i.class_id,
+            "class_name":i.class_name,
+            "create_time":i.create_time.strftime("%Y-%m-%d"),
+        })
+
+    res={
+        "tid":teacher.t_id,
+        "t_id": teacher.t_id,
+        "t_name": teacher.t_name,
+        "t_gender": teacher.t_gender,
+        "t_phone": teacher.t_phone,
+        "t_subject": teacher.t_subject,
+        "t_created": teacher.t_created.strftime("%Y-%m-%d"),
+        "class_list": l3
+    }
+    return res
+
+
+
+
+