如何获取django form.errors的内容？

Question

forms.py

class RegisterForm(forms.Form):
    username = forms.CharField(min_length=4, max_length=16,
                           error_messages={'required': u'please input username',   'min_length': 'username is too short',
                                           'max_length': 'username is too long'})
    password = forms.CharField(min_length=6, max_length=16,
                           error_messages={'required': u'please input password', 'min_length': 'password is too short',
                                           'max_length': 'password is too long'})

---

views.py

def register(request):
    if request.method == "POST":
        form = RegisterForm(request.POST)
        if form.is_valid():
            print form
            return HttpResponse("success")
        else:
            print form.errors
            return HttpResponse("error")
    else:
        return render(request, "register.html")

在views.py中，我需要获取错误内容，例如“请输入用户名”，“密码太短”， 但是，form.erros是html部分，你可以参考图片。

Answer 1

你可以这样做：

def clean_username(self):
    if len(username)<1:
        msg = u"Please enter username."
        self._errors["username"] = self.error_class([msg])
        return False
    return self.cleaned_data["username"]
def clean_password(self):
    if len(password)<6:
        msg = u"Password is too short."
        self._errors["password"] = self.error_class([msg])
        return False
    return self.cleaned_data["password"]

详情请点击此处：https://docs.djangoproject.com/en/dev/ref/forms/validation/#cleaning-and-validating-fields-that-depend-on-each-other