Python 未保存模型表单

我已经创建了一个模型表单，希望在用户在模板中输入值并单击submit时保存数据

我曾试着跟随一位老师来指导我。但是，表单似乎没有保存，也没有将我重定向到我指定的模板

这是我在views.py上看到的

class PaymentView(TemplateView):
    template_name = 'classroom/teachers/app-student-dashboard.html'

    def get(self, request):
        paymentform = MentorPaymentForm()
        return render(request, self.template_name, {'paymentform':paymentform})

    def post(self, request):
        paymentform = MentorPaymentForm(request.POST)
        if paymentform.is_valid:
            payment = paymentform.save(commit=False)
            payment.user = request.user
            payment.save()
            address = paymentform.cleaned_data['address']
            country = paymentform.cleaned_data['country']
            invoice_name = paymentform.cleaned_data['invoice_name']
            account_num = paymentform.cleaned_data['account_num']
            bank_name = paymentform.cleaned_data['bank_name']
            branch_code = paymentform.cleaned_data['branch_code']
            paymentform = MentorPaymentForm()
            return redirect('teachers:app-instructor-dashboard')

        args = {'paymentform': paymentform, 'address': address,
                'country': country, 'invoice_name': invoice_name,
                'account_num': account_num, 'bank_name': bank_name,
                'branch_code': branch_code}
        return render(request, self.template_name, args)

forms.py

class MentorPaymentForm(forms.ModelForm):
    class Meta:
        model = Mentor
        fields = ('address', 'country', 'invoice_name', 'account_num', 'bank_name', 'branch_code')

models.py：

class Mentor(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='mentor')
    COUNTRIES = (
        ('SA', 'South Africa'),
        ('NG', 'Nigeria'),
        ('KE', 'Kenya'),
        ('OT', 'Other')
    )
    address = models.CharField(max_length=500, null=True, blank=True)
    country = models.CharField(max_length=30, choices=COUNTRIES)
    invoice_name = models.CharField(max_length=200, null=False, blank=False)
    account_num = models.IntegerField(default=1234)
    bank_name = models.CharField(max_length=50, null=False)
    branch_code = models.IntegerField(default=1234)

和我的模板：

<form id="edit-payment-details", method="post",enctype="multipart/form-data" class="form-horizontal">
                        {% csrf_token %}
                      <div class="form-group">
                        <label for="name" class="col-md-2 control-label">Name on Invoice</label>
                        <div class="col-md-6">
                          <div class="form-control-material">
                            <input type="text" class="form-control used" id="name" value="{{ paymentform.invoice_name }}">
                              {{ paymentform.invoice_name }}
                            <label for="invoice_name"></label>
                          </div>
                        </div>
                      </div>
                      <div class="form-group">
                        <label for="address" class="col-md-2 control-label">Address</label>
                        <div class="col-md-6">
                          <div class="form-control-material">
                            <textarea class="form-control used" id="address"> </textarea>
                              {{ paymentform.address }}
                            <label for="address">Address</label>
                          </div>
                        </div>
                      </div>
                      <div class="form-group">
                        <label for="country" class="col-md-2 control-label">Country</label>
...
                          <button type="submit" class="btn btn-success paper-shadow relative" data-z="0.5" data-hover-z="1" data-animated>Update Billing</button>

更新

尝试并解决运行迁移时出现的错误消息。我尝试删除所有迁移，然后运行makemigrations并再次迁移。我不再收到错误唯一约束失败错误。但是，我仍然无法将表单的数据保存到数据库中

find . -path "*/migr
ations/*.py" -not -name "__init__.py" -delete

如前所述。你必须使用

if paymentform.is_valid():

而不是

if paymentform.is_valid:

---

由于它是一种方法而不是属性

您确定数据库中关于新的\uuuu教室\u导师.id字段的内容不一致吗？我认为你应该先解决这个问题，然后再研究你的模型form@Batman据我所知，paymentform.is\u valid不应作为方法而不是属性调用：paymentform.is\u valid（）

if paymentform.is_valid: