如何验证表单不接受消息正文中的“http”或“https”？ [复制]

Question

我尝试使用 django 的 regexvalidators 来验证表单，使其不包含 http 或 https（许多垃圾邮件发送者使用链接），但它不起作用。

from django import forms
from django.core.validators import RegexValidator
from antispam.honeypot.forms import HoneypotField

class ContactForm(forms.Form):
    name = forms.CharField(max_length=50)
    email = forms.EmailField()
    phone = forms.CharField(max_length=11)
    message = forms.CharField(widget=forms.Textarea, validators=[RegexValidator(regex=r'http(s)?|HTTP(s)?', message="I don't accept link", code="invalid")])
    spam_honeypot_field = HoneypotField()

我该如何解决这个问题？

Answer 1

This expression 可能会帮助您这样做：

^((?!http|https).)+$

根据Pushpesh 的建议，您可以使用带有负前瞻的much simplified expression：

^(?!.*\bhttps?\b).+$

这张图显示了它是如何工作的：

代码

import re

string = 'Anything else that you wish except http://someurl.org'
# string = 'Anything else that you wish'
matches = re.search(r'^(((?!http|https).)+)$', string)
if matches:
    print(matches.group(1)+ " is a match")
else: 
    print('Sorry! No matches! Something is not right! Call 911!')

输出

Sorry! No matches! Something is not right! Call 911!