确认后如何提交 Django 表格

Question

我正在开发一个储蓄应用程序，我希望用户在显示带有消息的确认表单后添加客户存款。 我已尽我所能，但我意识到存款 function 工作正常并显示确认消息，但在确认表单上单击确认时无法提交存款表单，而是系统将我再次重定向回存款表单； 在输入表单上显示金额字段不能为空的错误。

Model 代码：

class Deposit(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.CASCADE, null=True)
    acct = models.CharField(max_length=6, null=True)
    staff = models.ForeignKey(User, on_delete=models.CASCADE, null=True)
    deposit_amount = models.PositiveIntegerField(null=True)
    date = models.DateTimeField(auto_now_add=True)

    def get_absolute_url(self):
        return reverse('create_account', args=[self.id])

    def __str__(self):
       return f'{self.customer} Deposited {self.deposit_amount} by {self.staff.username}'

表格代码：

class CustomerDepositForm(forms.ModelForm):

    class Meta:
       model = Deposit
       fields = ['deposit_amount']

查看代码：

def customer_deposit(request, id):
    context = {}
    form = CustomerDepositForm(request.POST or None)
    #Set Page Title
    page_title = "Customer Deposit"
    #Get Current Date
    current_date = datetime.now().date()
    #Get Current Month Name from Calendar
    current_month_name = calendar.month_name[date.today().month]

    try:
        #Check the Customer ID in DB
        customer = Customer.objects.get(id=id)
        #Customer Account
        acct = customer.account_number
   except Customer.DoesNotExist:
        messages.error(request, 'Customer Does Not Exist')
        return redirect('customer_create')
   else:
       #Get the Customer total deposit
       deposit = Deposit.objects.filter(customer_id = id).aggregate(total=Sum('deposit_amount')
       )['total'] or Decimal()
       if request.method == 'POST':
            #Deposit Form
            form = CustomerDepositForm(request.POST or None)
            if form.is_valid():
                amount = form.cleaned_data['deposit_amount']
                context.update(  {
                'deposit':deposit,
                'page_title':page_title,
                'customer':customer,
                'current_date':current_date,
                'current_month_name':current_month_name,
                'form':form,
                'amount':amount,
                'acct':acct,
                })
                return render(request, 'dashboard/deposit_approval_form.html', context)
            
        else:
            form = CustomerDepositForm()
            context = {
            'deposit':deposit,
            'page_title':page_title,
            'customer':customer,
            'current_date':current_date,
            'current_month_name':current_month_name,
            'form':form,
        
            'acct':acct,
            }
            return render(request, 'dashboard/deposit.html', context)

def approve_deposit(request, id):
    user = request.user
    form = CustomerDepositForm(request.POST or None)
    amount = form.cleaned_data['deposit_amount'].value()
    try:
        #Check the Customer ID in DB
        customer = Customer.objects.get(id=id)
        #Customer Account
        acct = customer.account_number
   except Customer.DoesNotExist:
       messages.error(request, 'Customer Does Not Exist')
       return redirect('customer_create')
   else:
       if request.method == 'POST':
           #Create Customer Deposit
           credit_acct = Deposit.objects.create(customer=customer, acct=acct, staff=user,    deposit_amount=amount)
           credit_acct.save()
           messages.success(request, f'N{amount} Credited for Account {acct} Successfully.')
           return redirect('deposit-slip')
               
      else:
          form = CustomerDepositForm()

return render(request, 'dashboard/deposit_approval_form.html')

存款批准模板代码：

<form method="POST">
               {% csrf_token %} 

             

            <a class="btn btn-secondary" href="{% url 'create-deposit' customer.id %}">Cancel</a>

               <input class="btn btn-danger" type="submit" value="Confirm">
           </form>

有人应该帮助实现这一目标的最佳方式。 谢谢

Answer 1

您必须使用null=True, blank=True对于您未在表单中使用的字段。 然后再次进行迁移

null = True, blank = False表示该字段在 DATABASE 中可以为空，但不能在 FORM 中，反之亦然。

Answer 2

根据我的观察，您没有在try block中提交表单，您只是在else block中提交表单。 表单永远不会提交，因为try block始终为 true