django for 循环计算仅显示最后一次迭代的期间的贷款偿还和利息

Question

我正在构建一个贷款系统来计算还款期限。当我运行代码时遇到这个问题，它只显示最后一行。下面是我的观点.py 请我需要它来显示所有行，而不仅仅是最后一行

def sveloan(request):
    if 'userid' in request.session:
        if request.method == 'POST':
                            
              balance = 120000

              annual_interest_rate = 42

              monthly_payment_rate =0.3

              monthly_interest_rate = annual_interest_rate / 12

              monthly_payment = monthly_payment_rate * balance

              new_balance= (balance - monthly_payment) * (1 + monthly_interest_rate)

              for month in range(1, 6):

                  monthly_payment = 20000

                  balance = (balance - monthly_payment)

                  rateint = (balance / 100 * monthly_interest_rate)

                  mydist = ('Month: %d \n Minimum monthly payment: %g \n Remaining balance: %g \n Minimum Interest payment: %g'\
                      % (month, round(monthly_payment, 2), round(balance,2), round(rateint, 2)))


                  context={
                      'mylist': mydist
                  }
                      
              
              return render(request,'loantest.html',context)

              
        else:
            return render(request,'index.html')
           
    else:
        return render(request,'index.html')

在我的模板中：

{% for p in mylist %}

{{p}}

{% endfor %}

Answer 1

我认为您只是有一些小事情需要调整。这是我修复该代码的快速尝试。我已经内嵌添加了解释注释：

def sveloan(request):
    if 'userid' in request.session:
        if request.method == 'POST':

            balance = 120000

            annual_interest_rate = 42

            monthly_payment_rate = 0.3

            monthly_interest_rate = annual_interest_rate / 12

            monthly_payment = monthly_payment_rate * balance

            new_balance = (balance - monthly_payment) * (1 + monthly_interest_rate)

            # setting up a collector here for the individual mydist tuples/rows
            mylist = []

            for month in range(1, 6):
                monthly_payment = 20000

                balance = (balance - monthly_payment)

                rateint = (balance / 100 * monthly_interest_rate)

                mydist = (
                        'Month: %d \n Minimum monthly payment: %g \n Remaining balance: %g \n Minimum Interest payment: %g' \
                        % (month, round(monthly_payment, 2), round(balance, 2), round(rateint, 2)))

                # add each mydist tuple to the mylist collector
                mylist.append(mydist)

            # de-indeinting this, it should not be within your for loop
            context = {
                'mylist': mydist
            }

            return render(request, 'loantest.html', context)


        else:
            return render(request, 'index.html')

    else:
        return render(request, 'index.html')