updata models

EduSystemServer/Student/urls.py

@@ -4,5 +4,9 @@ from .views import *
 
 urlpatterns = [
     path("", studnets),
-    path("selectCourse", get_select_course_by_id)
+    path("selectCourse", get_select_course_by_id),
+    path("selectGrade/", search_grade),
+    path("changeInfo/", change_info),
+    path("chooseCourse/", choose_course),
+    path("deleteCourse/",delete_course)
 ]

EduSystemServer/Student/views.py

@@ -4,6 +4,7 @@ from django.http import HttpRequest
 from django.http import JsonResponse
 from EduSystemServer.utils import ResponseUtil
 from .models import Student
+from teacher.models import Teacher
 from course.models import SC, Course
 from django.views.decorators.csrf import csrf_exempt
 from django.http import QueryDict
@@ -99,7 +100,8 @@ def studnets(request):
         return JsonResponse(ResponseUtil.ok(data, "修改成功！"))
 
 
-def search_grade(request):
+# 查询成绩
+def search_grade(request):  # 获取SID，返回该同学的所有成绩
     if request.method == "GET":
         sid = request.GET.get('sid')
         cid = SC.objects.filter(sid_id=sid).values()
@@ -117,5 +119,125 @@ def search_grade(request):
         return JsonResponse(ResponseUtil.ok(data_list, "成绩查询成功！"))
 
 
+# 修改信息
+@csrf_exempt
+def change_info(request):
+    if request.method == "GET":
+        sid = request.GET.get('sid')
+        info = Student.objects.filter(sid=sid).values()
+        data = {
+            '学生编号': sid,
+            '用户账号': info[0]['username'],
+            '用户密码': info[0]['password'],
+            '姓名': info[0]['name'],
+            '性别': info[0]['sex'],
+            '年级': info[0]['grade'],
+            '班级': info[0]['class_name'],
+            '专业': info[0]['major'],
+        }
+        return JsonResponse(ResponseUtil.ok(data, "个人信息查询成功！"))
+    elif request.method == "POST":
+        sid = request.GET.get('sid')
+        stu_info = Student.objects.get(sid=sid)
+        username = request.POST.get('username') or stu_info.username
+        password = request.POST.get('password') or stu_info.password
+        name = request.POST.get('name') or stu_info.name
+        sex = request.POST.get('sex') or stu_info.sex
+        grade = request.POST.get('grade') or stu_info.grade
+        class_name = request.POST.get('class_name') or stu_info.class_name
+        major = request.POST.get('major') or stu_info.major
+        Student.objects.filter(sid=sid).update(username=username, password=password, name=name, sex=sex, grade=grade,
+                                               class_name=class_name, major=major)
+        data = {
+            '学生编号': sid,
+            '用户账号': username,
+            '用户密码': password,
+            '姓名': name,
+            '性别': sex,
+            '年级': grade,
+            '班级': class_name,
+            '专业': major,
+        }
+        return JsonResponse(ResponseUtil.ok(data, "学生信息修改成功！"))
+
+
+# 选课
+@csrf_exempt
+def choose_course(request):
+    if request.method == "GET":  # 将所有课程信息返回
+        course_list = []
+        course = Course.objects.all().values()
+        for i in range(len(course)):
+            teacher = Teacher.objects.filter(tid=course[i]['tid_id']).values('name')
+            data = {
+                '课程编号': course[i]['cid'],
+                '课程名称': course[i]['name'],
+                '课程类型': course[i]['type'],
+                '课程学分': course[i]['credit'],
+                '教师': teacher[0]['name'],
+            }
+            course_list.append(data)
+        return JsonResponse(ResponseUtil.ok(course_list, "课程查询成功！"))
+    elif request.method == "POST":  # 将选择的课程添加到选课表
+        sid = request.GET.get('sid')
+        cid = request.POST.get('cid_id')
+        try:
+            SC.objects.create(sid_id=sid, cid_id=cid)
+            course = Course.objects.filter(cid=cid).values()
+            teacher = Teacher.objects.filter(tid=course[0]['tid_id']).values('name')
+            data = {
+                '课程编号': cid,
+                '课程名称': course[0]['name'],
+                '课程类型': course[0]['type'],
+                '课程学分': course[0]['credit'],
+                '教师': teacher[0]['name'],
+            }
+            return JsonResponse(ResponseUtil.ok(data, "选课成功！"))
+        except:
+            return JsonResponse(ResponseUtil.error("选课失败！"))
+
+
+# 退课
+@csrf_exempt
+def delete_course(request):
+    if request.method == "GET":  # 返回用户所有选择的课程
+        sid = request.GET.get('sid')
+        course_list = []
+        try:
+            cid = SC.objects.filter(sid_id=sid).values('cid_id')  # 通过选课表找到学生选的所有课程
+            for i in range(len(cid)):
+                course = Course.objects.filter(cid=cid[i]['cid_id']).values()  # 在课程表中找课程详细信息
+                teacher = Teacher.objects.filter(tid=course[0]['tid_id']).values('name')
+                data = {
+                    '课程编号': course[0]['cid'],
+                    '课程名称': course[0]['name'],
+                    '课程类型': course[0]['type'],
+                    '课程学分': course[0]['credit'],
+                    '教师': teacher[0]['name'],
+                }
+                course_list.append(data)
+            return JsonResponse(ResponseUtil.ok(course_list, "课程查询成功！"))
+        except:
+            return JsonResponse(ResponseUtil.error('你还没有选课！'))
+    elif request.method == "POST":  # 将用户选择的课程删除
+        sid = request.GET.get('sid')
+        cid = request.POST.get('cid')
+        try:
+            course = Course.objects.filter(cid=cid).values()  # 在课程表中找课程详细信息
+            teacher = Teacher.objects.filter(tid=course[0]['tid_id']).values('name')
+            data = {
+                '课程编号': course[0]['cid'],
+                '课程名称': course[0]['name'],
+                '课程类型': course[0]['type'],
+                '课程学分': course[0]['credit'],
+                '教师': teacher[0]['name'],
+            }
+            SC.objects.filter(sid_id=sid, cid_id=cid).delete()
+            return JsonResponse(ResponseUtil.ok(data, "退课成功！"))
+        except:
+            JsonResponse(ResponseUtil.error('退课失败！'))
+
+
+
 def get_select_course_by_id(request):
     pass

EduSystemServer/course/models.py

@@ -25,8 +25,8 @@ class Course(models.Model):
 class SC(models.Model):
     sid = models.ForeignKey(Student, to_field="sid", on_delete=models.CASCADE, name="sid")
     cid = models.ForeignKey(Course, to_field="cid", on_delete=models.CASCADE, name="cid")
-    middle_grade = models.IntegerField(name="middle_grade")
+    middle_grade = models.IntegerField(name="middle_grade", blank=True, null=True)
-    end_grade = models.IntegerField(name="end_grade")
+    end_grade = models.IntegerField(name="end_grade", blank=True, null=True)
 
     def to_dict(self):
         return {"sid": self.sid, "cid": self.cid, "middle_grade": self.middle_grade, "end_grade": self.end_grade}