我应该如何以及在哪里添加检查条件以查看用户是否在 Django 中年满 18 岁？

Question

我想要做的是，如果用户在 18 岁以上，那么请他填写表格……如果低于 18 岁，那么请他填写不同的表格并将表格保存到数据库中

视图.py

from django.shortcuts import render

from app1.form import UserForm

from django.http import HttpResponse

# Create your views here.

def home(request):

    return render(request,"home.html")

def formpage(request):

    form=UserForm()

    if(request.method=='POST'):

        form=UserForm(request.POST)

        if(form.is_valid()):

            form.save()

            return home(request)

    return render(request,'formpage.html',{'form':form})

模型.py

from django.db import models

# Create your models here.

gen_opts= [

('male','Male'),

('female', 'Female'),

]

class MyUser(models.Model):

    name=models.CharField(max_length=40)

    gender = models.CharField(max_length=6, choices=gen_opts)

    age= models.PositiveIntegerField()

    ph.num=models.PositiveIntegerField()

    check_box = models.BooleanField()

    def __str__(self):

        return self.name

表格.py

from app1.models import MyUser

from django import forms

class UserForm(forms.ModelForm):

    class Meta():

        model=MyUser

        fields='__all__'