我无法将 django-recaptcha 添加到注册表单。该表单是 django-registration 表单的扩展。这是我插入它的方法（仅显示相关代码）：
网址.py：
from registration_custom.forms import RegistrationFormUniqueEmail
url(r'^accounts/register/$', 'registration_custom.views.register',
{'form_class':RegistrationFormUniqueEmail,
'backend':'registration.backends.default.DefaultBackend' }, name='registration_register',),
*registration_custom.forms.py:*
from captcha.fields import ReCaptchaField
class RegistrationFormUniqueEmail(RegistrationForm):
"""
Subclass of ``RegistrationForm`` which enforces uniqueness of
email addresses.
"""
# added recaptcha
captcha = ReCaptchaField()
def clean_email(self):
"""
Validate that the supplied email address is unique for the
site.
"""
if User.objects.filter(email__iexact=self.cleaned_data['email']):
raise forms.ValidationError(_("This email address is already in use. Please supply a different email address."))
return self.cleaned_data['email']
我已经检查过我的 recaptcha 密钥是否正确，并且它们是正确的，并且这些密钥是为我用来测试的域设置的。
你能发现我错过的东西吗？谢谢。