python - 验证失败时，Django 自定义表单验证器不会引发异常

Question

我在 form.py 中设置了一个正则表达式，当我验证表单中的数字时，它成功失败并刷新表单，但不会引发 ValidationError 或显示消息。我已经尝试过 RegexField 并且也不会引发错误，但是它正确地失败了，我做错了什么？

这是视图设置的示例：

from django.shortcuts import render, redirect
from django.http import HttpResponse, Http404
from django.urls import reverse
from django.template import loader
from django.core.mail import send_mail, mail_admins
from .forms import Register
# Importing Models
from .models import Users
# Create your views here.

# Create your views here.
def register(request):
    if request.method == "POST":
        forms = Register(request.POST)

        if forms.is_valid():
            f_name = forms.cleaned_data["first_name"]
            l_name = forms.cleaned_data["last_name"]
            em = forms.cleaned_data["email"]
            num = forms.cleaned_data["phone"]
            user = Users(
                first_name=f_name,
                last_name=l_name,
                email=em,
                phone=num
                )
            user.save()
            # Saving session
            request.session['f_name'] = f_name
            
            # User Mailing
            subject = f'Welcome to JSG {f_name}'
            message = 'Testing'
            from_email = '[e-mail]'
            recipient_list = [em]

            user_mail = send_mail(
                subject,
                message,
                from_email,
                recipient_list,
                fail_silently = False,
                )

            # Admin Mailing
            subject = f'New member has joined the family {f_name}'
            message = ( f"Name: {f_name} {l_name}\n" 
                        f"Email: {em}\n"
                        f"Phone: {num}\n" 
                      )

            admin_mail = mail_admins(
                subject,
                message,
                fail_silently = False,
                )

            return redirect('success')

            
                
        
        else:
            forms = Register()
            context = {
                'forms':forms
                      }
            return render(request, 'register/register.html', context)
    
    forms = Register()
    title = "Join now"
    
    context = {
    'title':title,
    'forms':forms,
    }
    
    return render(request, 'register/register.html', context)

def success(request):
    welcome = request.session['f_name']

        
    context = {
        'welcome' : welcome
        }
    return render(request, 'register/success.html', context)

这是我的注册表单的forms.py：

from django import forms
from django.core.validators import RegexValidator
from django.core.exceptions import ValidationError
import re




def validate_phone(val):
    if not re.match(r'^(05)', val):
        raise ValidationError("Not correct")

class Register(forms.Form):
    first_name = forms.CharField(label="First Name", max_length=20,)

    last_name = forms.CharField(label="Last Name", max_length=20)

    email = forms.EmailField(label="Email", 
        max_length=50,
        help_text="[e-mail]")

    phone = forms.CharField(label="Phone",
        help_text="055-555-5555",
        max_length=10,
        min_length=10,
        validators=[validate_phone])

我阅读和使用但在不显示错误时也存在相同问题的另一种方法是：

validate_phone = RegexValidator(r'^(05)\d{9}$', 
"must only be numbers", 
"invalid number")

phone = forms.CharField(label="Phone",
        help_text="055-555-5555",
        max_length=10,
        min_length=10,
        validators=[validate_phone])

也成功失败但不会在表单中引发错误或消息，我是否错过了一个步骤，或者是否应该以另一种方式完成以闪烁错误消息？

这是发布后的结果

标签： pythondjangodjango-viewsdjango-formsdjango-validation