如何使用 Django 中的內置 EmailValidator 驗證 UserCreationForm 的 email 字段？

Question

現在，如果我在我的 UserCreationForm 中輸入無效數據並提交它，頁面會重新加載但不會顯示任何錯誤。 我希望 Django 中的 EmailValidator 驗證器顯示錯誤。 我嘗試將驗證器屬性添加到 email 字段，但它沒有做任何事情。

以下是我的看法：

from django.contrib.auth import authenticate, login, logout
from django.http import HttpResponse, HttpResponseRedirect, Http404
from django.shortcuts import render
from django.urls import reverse

from .models import CustomUserCreationForm

# Create your views here.
def register(request):
    if request.user.is_authenticated:
        return HttpResponseRedirect(reverse('index'))
    elif request.method == 'GET':
        form = CustomUserCreationForm()
    elif request.method == 'POST':
        form = CustomUserCreationForm(request.POST)
        if form.is_valid():
            form.save()
            context = {
                'user': request.user,
            }
            return HttpResponseRedirect(reverse('index'), context)
        else:
            return HttpResponseRedirect(reverse('register'))
    else:
        return HttpResponse("Project 3: TODO")

    context = {
        'form': form,
    }

    return render(request, 'registration/signup.html', context)

def logout_view(request):
    logout(request)
    return HttpResponseRedirect(reverse('login'))

這是我的模型：

from django.contrib.auth.models import AbstractUser, AbstractBaseUser
from django import forms
from django.contrib.auth.models import User
from django.db import models
from django.contrib.auth.forms import UserCreationForm
from django.core.validators import EmailValidator

# Create your models here.

# Customer class.
class CustomUser(User):
    REQUIRED_FIELDS = ['email', 'first_name', 'last_name']

# Create user registration form class.
class CustomUserCreationForm(UserCreationForm):

    first_name = forms.CharField(required=True, max_length=150, help_text='Required.')
    last_name = forms.CharField(required=True, max_length=150, help_text='Required.')
    email = forms.CharField(required=True, max_length=150, help_text='Required.', validators=[EmailValidator], error_messages={'invalid': 'This does not look like an email address.'})

    class Meta:
        model = User
        fields = UserCreationForm.Meta.fields + ('first_name', 'last_name', 'email',)
    # TODO: show an error message when email is incorrectly formatted.
    # TODO: make email field unique and show an error message when it was already used.

Answer 1

在CustomUserCreationForm中使用 Django 的內置EmailField

email = forms.EmailField(...)

也看到這個（驗證電子郵件）（form.clean） ，閱讀這個以顯示單個表單字段的錯誤