[以Django形式使用self.cleaned_data []的Key_error

Question

我在forms.py中的以下第email = self.cleaned_data["email"]行上不断遇到key_error。我也尝试添加电子邮件验证或clean_email方法，因为以某种方式似乎key_error仅在我尝试使用无效的电子邮件地址进行注册时发生。添加def clean_email()是否正确？如果是这样，我班级内的forms.py是否合适？

forms.py：

from django import forms
from django.contrib.auth.models import User


class RegisterForm(forms.Form):
    first_name = forms.CharField(widget=forms.TextInput(attrs={'class': "form-control", 'placeholder': "First Name", 'autocomplete': "nope"}), label="First name", max_length=64, required=True)
    last_name = forms.CharField(widget=forms.TextInput(attrs={'class': "form-control", 'placeholder': "Last Name", 'autocomplete': "new-password"}), label="Last name", max_length=64, required=True)
    email = forms.EmailField(widget=forms.TextInput(attrs={'class': "form-control", 'placeholder': "Email", 'autocomplete': "new-password"}), label="Email", max_length=132, required=True)
    password = forms.CharField(label="Password", max_length=32, widget=forms.PasswordInput(attrs={'class': "form-control", 'placeholder': "Password"}))
    confirmation = forms.CharField(label="Confirmation", max_length=32, widget=forms.PasswordInput(attrs={'class': "form-control", 'placeholder': "Confirm"}))

    def clean(self):
        email = self.cleaned_data["email"]
        if User.objects.filter(username=email).exists():
          raise forms.ValidationError(u'Email "%s" is already in use.' % email)

        password = self.cleaned_data["password"]
        confirmation = self.cleaned_data["confirmation"]
        if password != confirmation:
            raise forms.ValidationError("Password and confirmation do not match!")

views.py中的对应方法是：

from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render, redirect
from django.contrib.auth.models import User
from django.contrib.auth import authenticate, login
from django.contrib import messages

def register_client(request):
  if request.method == "POST":
    form = RegisterForm(request.POST)

    if form.is_valid():
      email = form.cleaned_data['email']
      password = form.cleaned_data['password']
      user = User.objects.create_user(email, email, password)
      user.first_name = form.cleaned_data['first_name']
      user.last_name = form.cleaned_data['last_name']
      user.save()

  else:
    form = RegisterForm()

  return render(request, "pizza/register.html", {'form': form})

register.html：

{% extends "pizza/outerlayout.html" %}

{% block title %}
Register for Pizza
{% endblock %}

{% block body %}

<form action="{% url 'register_client' %}" class="form-signin" method="post" autocomplete="false">
  {% csrf_token %}
  {% load static %}
  <img class="mb-4" src="{% static 'pizza/pizza.jpg' %}" alt="" width="72" height="72">
  <h1 class="h3 mb-3 font-weight-normal">Register as Pizza Client</h1>
  {{ form }}

  <button class="btn btn-lg btn-primary btn-block" type="submit">Register</button>

</form>

{% endblock %}

感谢vm和道歉的基本问题-这是一个新手。

Answer 1

尝试一下：

def clean_email(self):   #add clean_email
    email = self.cleaned_data["email"]
    if User.objects.filter(username=email).exists():
      raise forms.ValidationError(u'Email "%s" is already in use.' % email)

为密码验证另外创建一个def clean_password()