保存到数据库的视图函数中Django嵌套函数的名称错误

Question

使用Django，当试图将用户的答案保存到数据库时，它向我显示了一个名称错误。我在views函数中嵌套了一个函数，当我不尝试将数据保存到数据库时，它可以正常工作。但是，一旦我尝试在views函数中插入代码来保存数据，就会产生这个名称错误。下面是包含代码的文件

models.py文件

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User 

class ansquestions(models.Model):
    m_invested = models.CharField(max_length=100)
    p_return = models.CharField(max_length=100)
    years = models.CharField(max_length=100)
    inflation_yes_no = models.CharField(max_length=100)
    r_output = models.TextField(default=True)
    date_answered = models.DateTimeField(default=timezone.now)
    author = models.ForeignKey(User, on_delete=models.CASCADE)

forms.py文件

from django import forms
from .models import ansquestions

class ansquestionsForm(forms.ModelForm):
    class Meta:
        model = ansquestions
        fields = ['m_invested', 'p_return', 'years', 'inflation_yes_no', 'r_output', 'date_answered', 'author'

]

views.py文件（注意：fvinvestment函数嵌套在investmentfvcalc函数下。粘贴到此处时，它不会显示为在investmentfvcalc下缩进，但在我的实际代码中，fvinvestment函数缩进并嵌套在InvestmentMetnCalc函数下。）

from django.shortcuts import render
#from django.http import HttpResponse
from .models import ansquestions
from .forms import ansquestionsForm


def investmentfv(request):
    idata = { 'tmi':tmi, 'pry':pry, 'ys':ys, 'qinf':qinf }
    return render(request, 'fvalueapp/investmentfv.html', idata)




 def investmentfvcalc(request):
    if request.method == 'POST':
        form = ansquestionsForm(request.POST)
        if form.is_valid():
            total_i = request.POST.get["m_invested", '']
            perc_r = request.POST.get["p_return", '']
            years_i = request.POST.get["years", '']
            makeup_infl = request.POST.get["inflation_yes_no", '']
            ansquestions_obj = ansquestions(m_invested=total_i, p_return=perc_r, years=years_i, inflation_yes_no=makeup_infl)
            ansquestions_obj.save() 

            

def fvinvestment():
        global fv_i_value
        global r_output
        #global makeup_infl ( global variable might be needed for technique for above. as error says makeup_inf is not defined ) 
        if makeup_infl=='no':
            i_return = (float(perc_r))
        elif makeup_infl=='yes' and int(years_i)<=5:
            i_return = (2+float(perc_r))
        elif makeup_infl=='yes' and int(years_i)>5 and int(years_i)<=9.99 :
            i_return = (4 + float(perc_r))
        elif makeup_infl=='yes' and int(years_i)>= 10 :    
            i_return = ( 6 + float(perc_r))
                
        
        fv_i_value = int(total_i) * (1 + (i_return)*.01) ** int(years_i)

        r_output = 'Your money would grow to the total of ' + str(fv_i_value) +' dollars at the end of this timeframe.'                     
        
    
    fvinvestment()   


  

  

    
idata = { 'tmi':tmi, 'pry':pry, 'ys':ys, 'qinf':qinf, 'r_output': r_output }
return render (request, 'fvalueapp/fvinvestmentcalcresults.html', idata)

错误：

运行上述代码时，它会给我错误“NameError at investmentfv/InvestmentTFVCALC”“在封闭范围内的赋值之前引用的自由变量'Component_infl'”i，然后将变量“Component_infl”作为全局变量放入fvinvestment函数中，这将产生错误“名称错误-未定义名称‘补充信息’

Answer 1

将fvinvestment更改为global scope，传入以下变量：年份和构成

def fvinvestment(years_i, makeup_infl):
    ....

这也将解决您的化妆信息未定义错误