Django模型：自动保存

Question

我有2类从我的模型

class APPLICANT_DATA(models.Model): 
    FIRST_NAME= models.CharField(max_length=20) 
    LAST_NAME= models.CharField(max_length=20) 
    MIDDLE_NAME= models.CharField(max_length=20) 

和

class Applicant_status(models.Model): 
    fkey = models.ForeignKey(APPLICANT_DATA) 
    COMMENTS = models.CharField(max_length=100, null=True) 
    date_of_app = models.DateTimeField(auto_now_add=True, blank=True) 

如何让我的“Applicant_status”每当“APPLICANT_DATA”数据插入填充？

这里是我的views.py

def save_page(request): 
form = application_form(request.POST) 
if request.method == 'POST': 

    if form.is_valid(): 

      emails = form.cleaned_data['EMAIL'] 
      mail = EmailMessage("Your activation and application code is: asdasd, do not show this to anyone", to=[emails]) 

      mail.send() 
      cde = form.save(commit=False) 
      applicant_status.objects.create(fk=cde.id) 
      cde.save() 



      return HttpResponseRedirect('verify') 

else: 
    form = application_form() 

return render(request, 'frontend/apply.html', {'form': form})` 

编辑：我的forms.py

from django.forms import ModelForm 
from django import forms 
from .models import APPLICANT_DATA 
from django.core.exceptions import ValidationError 
from django.core.validators import RegexValidator 

class application_form(ModelForm): 

FIRST_NAME = forms.CharField(max_length=20, label = ("First Name"), 
. . . 
class Meta: 
    model = APPLICANT_DATA 
    fields = ('FIRST_NAME', 'LAST_NAME', 'MIDDLE_NAME',) 

错误的是（1048， “列FKEY”不能为空“）

对不起如果这是一个新手问题

Answer 1

使用django信号来实现这一点。 https://docs.djangoproject.com/en/1.8/topics/signals/

或者您也可以手动保存Applicant_Status，并将fk设置为您刚才在视图中收到的Application_Data。