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I am creating a student attendance form where need to get details of student name, student class and Id from student model based on teacher selecting student class in one form. I have tried using initial by using for loop on query data to prefill the form in formset, however it populates data for one record only. Below is the code for forms.py, models and views.py. Can someone help on this

forms.py

class student(models.Model):
    studentid = models.AutoField(primary_key=True)
    Gender = models.CharField(max_length=6, choices=gender, null=True)
    Name = models.CharField(max_length=100, null=True)
    DOB = models.DateField(null=True)
    Image = models.ImageField(null=True, upload_to='images')
    Status = models.CharField(max_length=10, choices=statchoice, null=True)
    Father_name = models.CharField(max_length=100, null=True)
    Mother_name = models.CharField(max_length=100, null=True)
    Address = models.CharField(max_length=200, null=True)
    Contact_no = models.IntegerField(null=True)
    Email = models.EmailField(null=True)
    Admission_class = models.CharField(max_length=40, null=True, choices=grade)
    Admission_date = models.DateField(null=True)
    Current_class = models.CharField(max_length=40, null=True, choices=grade)
    Leaving_date = models.DateField(null=True, blank=True)
    objects = models.Manager() 
    def __str__(self):
        return str(self.studentid)  

class student_attendance(models.Model):
    Student_ID = models.CharField(max_length=100, null=True)
    Student_Name = models.CharField(max_length=100, null=True)
    Student_class = models.CharField(max_length=100, null=True, choices=grade)
    Attendance_date = models.DateField(null=True, auto_now_add=True, blank=True)
    Attendance_status = models.CharField(choices=attendance, null=True, max_length=10)
    objects = models.Manager()

Views.py

def student_attend(request):
if request.method == 'POST':
    data = request.POST.get('studentGrade')
    formset_data = student.objects.filter(Current_class=data)
    AttendanceFormSet = formset_factory(std_attendance, extra=(len(formset_data))-1)
    for element in formset_data:
        formset = AttendanceFormSet(initial=[
            {'Student_ID': element.studentid, 'Student_Name':element.Name, 'Student_class':element.Current_class, 'Attendance_status':"Present"}
        ])
    param = {'formset':formset} 
    return render(request, 'home/student_attendance.html', param)     
return render(request, 'home/student_attendance.html')

form.py:

class student_register(ModelForm):
class Meta:
    model = student
    fields = '__all__'

class std_attendance(ModelForm):
class Meta:
    model = student_attendance
    fields = '__all__'
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1 回答 1

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循环中的每次迭代都会覆盖表单集，这就是为什么只填充一个表单的原因，您需要以这种方式用循环内的所有表单填充参数：

initial = []
for element in formset_data:
        initial.append({'Student_ID': element.studentid, 'Student_Name':element.Name, 'Student_class':element.Current_class, 'Attendance_status':"Present"}
        
formset = AttendanceFormSet(initial=initial)
于 2020-09-23T20:48:54.207 回答