如何在django中使用不同方法时使用过滤数据？

Question

我希望我的头衔足以理解我的意思，请帮助我解决这个问题的人。

当我尝试这样做时：

id_list = grade.objects.filter(Teacher=m.id).values_list('Students_Enrollment_Records_id',flat=True).distinct()

我使用distinct()从查询结果中消除了“学生注册记录”的重复行，但我想知道为什么结果是这样的：

我该怎么做以显示学生姓名而不是我的html中的那个QuerySet？

这是我当前的views.py：

id_list = grade.objects.filter(Teacher=m.id).values_list('Students_Enrollment_Records_id',flat=True).distinct()
print(id_list)
grades = grade.objects.filter(Students_Enrollment_Records_id__in=id_list)
print(grades)

这是我的models.py：

class grade(models.Model):
    Teacher = models.ForeignKey(EmployeeUser, related_name='+', on_delete=models.CASCADE,
                                null=True, blank=True)
    Grading_Categories = models.ForeignKey(gradingCategories, related_name='+', on_delete=models.CASCADE,
                                           null=True, blank=True)
    Subjects = models.ForeignKey(Subject, related_name='+', on_delete=models.CASCADE, null=True)
    Students_Enrollment_Records = models.ForeignKey(StudentsEnrolledSubject, related_name='+',
                                                    on_delete=models.CASCADE, null=True)
    Average = models.FloatField(null=True, blank=True)

UPDATE

当我尝试这个时

piste = grade.objects.filter(Teacher_id=m.id).values_list('Students_Enrollment_Records').annotate(Average=Avg('Average')).order_by('Grading_Categories').distinct()

计算是固定的，但没有显示教师姓名，科目和学生姓名，但显示的ID却是这样

这是我的愿望答案

这是我在html中发布的方式

views.py

return render(request, 'Homepage/index.html', {"piste":piste})

html

{% for n in piste %}
          <tr>
              <td>{{n.Teacher}}</td>
              <td>{{n.Subjects}}</td>
              <td>{{n.Students_Enrollment_Records.Students_Enrollment_Records.Student_Users}}</td>
              <td>{{n}}</td>
          </tr>
          {% endfor %}

这是model.py

class EmployeeUser(models.Model):
    Image = models.ImageField(upload_to='images', null=True, blank=True)
    Employee_Number = models.CharField(max_length=500, null=True)
    Username = models.CharField(max_length=500, null=True)
    Password = models.CharField(max_length=500, null=True)
    My_Department = models.ForeignKey(Department, related_name='+', on_delete=models.CASCADE, blank=True)
    My_Position = models.ForeignKey(Position, related_name='+', on_delete=models.CASCADE, blank=True)
    Firstname = models.CharField(max_length=500, null=True)
    Middle_Initial = models.CharField(max_length=500, null=True)
    Lastname = models.CharField(max_length=500, null=True)
    Educational_Attainment = models.ForeignKey(EducationalAttainment, related_name='+', on_delete=models.CASCADE,
                                               null=True)
    Landline = models.CharField(max_length=500, null=True)
    Mobile_Number = models.CharField(max_length=500, null=True)
    Email = models.CharField(max_length=500, null=True)
    Facebook_Acoount = models.CharField(max_length=500, null=True)

    Fathers_Firstname = models.CharField(max_length=500, null=True)
    Fathers_Middle_Initial = models.CharField(max_length=500, null=True)
    Fathers_Lastname = models.CharField(max_length=500, )
    Educational_Attainment_Father = models.ForeignKey(EducationalAttainment, related_name='+', on_delete=models.CASCADE,
                                                      null=True)
    Father_Occupation = models.CharField(max_length=500, null=True)
    Father_Company_Employed = models.CharField(max_length=500, null=True)
    Father_Landline = models.CharField(max_length=500, null=True)
    Father_MobileNo = models.CharField(max_length=500, null=True)
    Father_Email = models.CharField(max_length=500, null=True)
    Father_Facebook_Account = models.CharField(max_length=500, null=True)

    Mother_FirstName = models.CharField(max_length=500, null=True)
    Mother_Middle_Initial = models.CharField(max_length=500, null=True)
    Mother_Maiden_LastName = models.CharField(max_length=500, null=True)
    Educational_AttainmentID_Mother = models.ForeignKey(EducationalAttainment, related_name='+',
                                                        on_delete=models.CASCADE, null=True)
    Mother_Occupation = models.CharField(max_length=500, null=True)
    Mother_Company_Employed = models.CharField(max_length=500, null=True)
    Mother_Landline = models.CharField(max_length=500, null=True)
    Mother_MobileNo = models.CharField(max_length=500, null=True)
    Mother_Email = models.CharField(max_length=500, null=True)
    Mother_Facebook_Account = models.CharField(max_length=500, null=True)
    Family_Status = models.ForeignKey(FamilyStatu, related_name='+', on_delete=models.CASCADE, null=True)
    Country = models.CharField(max_length=500, null=True)
    ZIP_Postal_Code = models.CharField(max_length=500, null=True)
    State_Province = models.CharField(max_length=500, null=True)
    City = models.CharField(max_length=500, null=True)
    Barangay = models.CharField(max_length=500, null=True)
    Unit_Number_Street = models.CharField(max_length=500, null=True)
    LandMark = models.CharField(max_length=500, null=True)
    AddressLine1 = models.CharField(max_length=500, null=True)
    AddressLine2 = models.CharField(max_length=500, null=True)
    AddressLine3 = models.CharField(max_length=500, null=True)

    def __str__(self):
        suser = '{0.Firstname}   {0.Middle_Initial}      {0.Lastname}'
        return suser.format(self)

这是完整视图。py

m = EmployeeUser.objects.get(Username=request.POST['p_user'], Password = request.POST['p_pass'], My_Position =request.POST['position'])
piste = grade.objects.all().filter(Teacher=m.id).values_list('Students_Enrollment_Records').annotate(Average=Avg('Average')).order_by('Grading_Categories').distinct()
return render(request, 'Homepage/index.html', {"piste":piste})

Answer 1

原因是值列表

piste = grade.objects.all().filter(Teacher=m.id).values_list('Students_Enrollment_Records').annotate(Average=Avg('Average')).order_by('Grading_Categories').distinct()

删除values_list并尝试。