optimize exception handle

StudentSystem-master/StudentSystem/studentManagement/models.py

@@ -13,7 +13,7 @@ class CourseModel(models.Model):
 
 # 学生信息表
 class StudentInformationModel(models.Model):
-    stu_id = models.AutoField(primary_key=True,verbose_name='学生id')
+    stu_id = models.CharField(max_length=15,verbose_name='学生id')
     stu_name = models.CharField(max_length=30, verbose_name='学生姓名')
     stu_phone = models.CharField(max_length=20, verbose_name='学生电话')
     str_addr = models.TextField(verbose_name='学生地址')

StudentSystem-master/StudentSystem/studentManagement/views.py

@@ -92,19 +92,21 @@ def add(request):
         root_id = StudentModel.objects.get(pk=id).stu_id
         if id == root_id:
             stu_name = request.POST.get('stu_name')
-            if not all([stu_name]):
+            if not stu_name:
                 context = {
                     'msg': '名字有遗漏',
                 }
                 return render(request, 'studentManage/add.html', context)
 
             stu_data = StudentInformationModel()
+            stu_data.stu_id=id
             stu_data.stu_name = stu_name
             stu_data.stu_phone = request.POST.get('stu_phone')
             stu_data.str_addr = request.POST.get('str_addr')
             stu_data.stu_faculty =request.POST.get('stu_faculty')
             stu_data.stu_major = request.POST.get('stu_major')
             stu_data.save()
+
             context = {
                 'sucess': '增加成功',
             }
@@ -124,8 +126,13 @@ def select(request):
         id = request.POST.get('stu_id')
         if id=='':
             id=request.session['user']['id']
-        print()
-        stu_data = StudentInformationModel.objects.get(pk=id)
+        try:
+            stu_data = StudentInformationModel.objects.get(pk=id)
+        except:
+            context = {
+                'error': "not found studnet id: "+str(id),
+            }
+            return render(request, 'studentManage/select.html', context)
 
         stu_course = CourseModel.objects.filter(cour_id=id)
         dct = {}
@@ -142,6 +149,8 @@ def select(request):
             'msg': True
         }
         return render(request, 'studentManage/select.html', context)
+
+    # 删除
     else:
         root_information = request.session['user']
         id = root_information['id']
@@ -154,8 +163,11 @@ def select(request):
 # 删除
 def delete(request):
     if request.method == "POST":
-        id = int(request.POST.get('id'))
-        StudentInformationModel.objects.filter(stu_id=id).delete()
+        id = int(request.POST.get('stu_id'))
+        try:
+            StudentInformationModel.objects.filter(stu_id=id).delete()
+        except:
+            pass
         context = {
             'msg': '成功删除'
         }

StudentSystem-master/StudentSystem/templates/studentManage/add.html

@@ -23,6 +23,7 @@
     {% endif %}
     {% if sucess %}
         <h5 style="color: greenyellow">{{ sucess }}</h5><br>
+        <a href=""></a>
     {% endif %}
 </form>
 </body>

StudentSystem-master/StudentSystem/templates/studentManage/select.html

@@ -29,5 +29,8 @@
         {% endfor %}
     </ul>
 {% endif %}
+{% if error %}
+    <h2 style="color: red">{{ error}}</h2>
+{% endif %}
 </body>
 </html>