diff --git a/stu_jiuye/CURD_api.py b/stu_jiuye/CURD_api.py
index e35592e..4fd570b 100644
--- a/stu_jiuye/CURD_api.py
+++ b/stu_jiuye/CURD_api.py
@@ -112,7 +112,11 @@ def worktime(db=Depends(get_db)):
         .filter(Employments.is_deleted==0)\
             .all()
 
-    return [{'学生姓名':i.sname,'就业时常':f'{i.offer_recived_time-i.employment_open_time}' if i.offer_recived_time and i.employment_open_time else '暂无数据'} for i in q]
+    return [
+            {'学生姓名':i.sname
+            ,'就业时常':f'{i.offer_recived_time-i.employment_open_time}'
+            if i.offer_recived_time and i.employment_open_time else '暂无数据'} for i in q
+            ]
 
 
 @CURD.get('/avgworktime',summary='学生平均就业时常')
diff --git a/stu_jiuye/model.py b/stu_jiuye/model.py
index e5bb599..494e5de 100644
--- a/stu_jiuye/model.py
+++ b/stu_jiuye/model.py
@@ -1,5 +1,5 @@
 from sqlalchemy import ForeignKey
-
+from student_manage_system import students,classes
 from stu_jiuye.database import DATETIME,Base,Column,Integer,String,DATE
 from datetime import datetime
 
@@ -13,25 +13,19 @@ class Employments(Base):                                            #学生就
                 # , ForeignKey='student.id'
                 , comment='自增主键'
                 )
-    sname  = Column(String(50)
-                    # , ForeignKey='student.name'
+
+    num  = Column(Integer
+                    , ForeignKey('students.num')
                     )                                #学生姓名，冗余字段
     class_num  = Column(Integer
-                         # , ForeignKey='class.id'
+                         , ForeignKey('classes.id')
                             )                               #学生班级，冗余字段
-
-    # compname=Column(String(50)
-    #                 ,nullable=False
-    #                )
     company_id = Column(Integer                                  #公司id，外键匹配公司表
                         , ForeignKey('Company.id')
                         , nullable=True
 
                         )
-    # address_id = Column(Integer
-    #                     , ForeignKey('Address.id')
-    #                     , nullable=False
-    #                     )
+
     employment_salary  = Column(Integer, nullable=True)                                    #薪资
 
     employment_open_time = Column(DATE, nullable=True)                 #就业开放时间