Further improvement of teacher functions

-Query student information

EduSystemServer/teacher/urls.py

@@ -15,5 +15,6 @@ urlpatterns = [
     path('student/',student_performance_management),
     path('query/',query_student_information),
     path('course/',teaching_resources),
-    path('selection/',course_selection)
+    path('selection/',course_selection),
+    path('management/',student_management)
 ]

EduSystemServer/teacher/views.py

@@ -98,7 +98,7 @@ def delete(request):
         return JsonResponse({'code': 200, 'msg': '删除失败'}, safe=False)
 
 @csrf_exempt
-def teaching_resources(request): # 课程程序
+def teaching_resources(request): # 课程查询
     if request.method == 'POST':
         cid = int(request.POST.get('cid'))
         name = request.POST.get('name')
@@ -255,13 +255,12 @@ def student_performance_management(request): # 学生成绩管理
     elif request.method == "DELETE":
         put = MultiPartParser(request.META, request, request.upload_handlers, request.encoding).parse()
         sid = put[0]['sid']
-        print(sid)
+        cid = put[0]['cid']
+        print(sid,cid)
         try:
-            info = SC.objects.filter(sid=sid)
+            SC.objects.filter(sid=sid, cid=cid).update(middle_grade=0,end_grade=0)
-            data = info.values()  # 将 QuerySet 对象转换为字典列表
+            data = SC.objects.filter(sid=sid).values()# 将 QuerySet 对象转换为字典列表
             data = list(data)  # 转换为列表以便序列化为 JSON
-            print(info)
-            SC.objects.filter(sid=sid).delete()
             response = ResponseUtil.ok(data,"删除成功！")
             return JsonResponse(response)
         except:
@@ -283,8 +282,9 @@ def student_performance_management(request): # 学生成绩管理
         response = ResponseUtil.ok(data, "学生成绩修改成功")
         return JsonResponse(response)
 
+
 @csrf_exempt
-def course_selection(request):
+def course_selection(request): # 选课管理
     if request.method == 'POST':
         # 假设需要将 tid 为 1 的老师赋值给某个课程的 tid 字段
         teacher_id = int(request.POST.get('tid'))
@@ -360,3 +360,129 @@ def course_selection(request):
         else:
             response = ResponseUtil.error("课程信息修改失败，信息不全")
             return JsonResponse(response)
+@csrf_exempt
+def student_management(request):
+    if request.method == 'GET':
+        tid = request.GET.get('tid')
+        # 获取第1个查询表的数据
+        table1_result = Course.objects.filter(tid__tid=tid)
+        cids = [item.cid for item in table1_result]
+        # 获取第二个查询表的数据
+        table2_result = SC.objects.filter(cid__in=cids)
+        # for item in table2_result:
+        #     print(item.sid.sid)
+        # 获取第三个查询表的数据
+        # 提取查询结果中的 sid 值
+        sids = [item.sid.sid for item in table2_result]
+        table3_result = Student.objects.filter(sid__in=sids).values('sid', 'name', 'sex', 'grade', 'class_name', 'major')
+        table = list(table3_result)
+        response = ResponseUtil.ok(table,"选课学生信息")
+        return JsonResponse(response)
+    if request.method == 'POST':
+        cid = request.POST.get('cid')
+        tid = request.POST.get('tid')
+        grade = request.POST.get('grade')
+        class_name = request.POST.get('class_name')
+        major = request.POST.get('major')
+        # 定义空查询条件
+        data = []
+        if cid:
+            data.append(SC.objects.filter(cid=cid))
+        else:
+            # 获取第1个查询表的数据
+            table1_result = Course.objects.filter(tid__tid=tid)
+            cids = [item.cid for item in table1_result]
+            # 获取第二个查询表的数据
+            data.append(SC.objects.filter(cid__in=cids))
+        # for item in table2_result:
+        #     print(item.sid.sid)
+        # 获取第三个查询表的数据
+        # 提取查询结果中的 sid 值
+        print(data)
+        sids = [item.sid.sid for item in data[0]]
+        conditions = Q(sid__in=sids)
+        if grade:
+            conditions &= Q(grade=grade)
+        if class_name:
+            class_name &= Q(class_name=class_name)
+        if major:
+            conditions &= Q(major=major)
+        table3_result = Student.objects.filter(conditions).values('sid', 'name', 'sex', 'grade', 'class_name',
+                                                                    'major')
+        table = list(table3_result)
+        response = ResponseUtil.ok(table, "选课学生查询成功")
+        return JsonResponse(response)
+
+    if request.method == 'DELETE':
+        put = MultiPartParser(request.META, request, request.upload_handlers, request.encoding).parse()
+        sid = put[0]['sid']
+        cid = put[0]['cid']
+        print(sid)
+        try:
+            info = SC.objects.filter(sid=sid)
+            data = info.values()  # 将 QuerySet 对象转换为字典列表
+            data = list(data)  # 转换为列表以便序列化为 JSON
+            print(info)
+            SC.objects.filter(sid=sid,cid=cid).delete()
+            response = ResponseUtil.ok(data, "学生选课删除成功！")
+            return JsonResponse(response)
+        except:
+            response = ResponseUtil.error("未找到学生成绩")
+            return JsonResponse(response)
+
+@csrf_exempt
+def SC_selection(request):
+    if request.method == 'GET':
+        cid = request.GET.get('cid')
+        table2_result = SC.objects.filter(cid__in=cid)
+        # for item in table2_result:
+        #     print(item.sid.sid)
+        # 获取第三个查询表的数据
+        # 提取查询结果中的 sid 值
+        sids = [item.sid.sid for item in table2_result]
+        table3_result = Student.objects.filter(sid__in=sids).values('sid', 'name', 'sex', 'grade', 'class_name',
+                                                                    'major')
+        table = list(table3_result)
+        response = ResponseUtil.ok(table, "选课学生信息")
+        return JsonResponse(response)
+    if request.method == 'POST':
+        cid = request.POST.get('cid')
+        grade = request.POST.get('grade')
+        class_name = request.POST.get('class_name')
+        major = request.POST.get('major')
+        # 定义空查询条件
+        data = []
+        data.append(SC.objects.filter(cid=cid))
+        # 获取第三个查询表的数据
+        # 提取查询结果中的 sid 值
+        print(data)
+        sids = [item.sid.sid for item in data[0]]
+        conditions = Q(sid__in=sids)
+        if grade:
+            conditions &= Q(grade=grade)
+        if class_name:
+            class_name &= Q(class_name=class_name)
+        if major:
+            conditions &= Q(major=major)
+        table3_result = Student.objects.filter(conditions).values('sid', 'name', 'sex', 'grade', 'class_name',
+                                                                  'major')
+        table = list(table3_result)
+        response = ResponseUtil.ok(table, "选课学生查询成功")
+        return JsonResponse(response)
+
+    if request.method == 'DELETE':
+        put = MultiPartParser(request.META, request, request.upload_handlers, request.encoding).parse()
+        sid = put[0]['sid']
+        cid = put[0]['cid']
+        print(sid)
+        try:
+            info = SC.objects.filter(sid=sid)
+            data = info.values()  # 将 QuerySet 对象转换为字典列表
+            data = list(data)  # 转换为列表以便序列化为 JSON
+            print(info)
+            SC.objects.filter(sid=sid, cid=cid).delete()
+            response = ResponseUtil.ok(data, "学生选课删除成功！")
+            return JsonResponse(response)
+        except:
+            response = ResponseUtil.error("未找到学生成绩")
+            return JsonResponse(response)