Question

我有一个ajax登录视图。我可以登录确定但是当我登录不正确时我的json返回： {“errors”：{}} 我的观点如下：

def ajaxlogin(request):
    from forms import LoginForm
    form = LoginForm(request.POST)
    logged_in = False
    username = request.POST['username']
    password = request.POST['password']
    user = authenticate(username=username, password=password)
    if request.is_ajax() and user is not None:
        login(request, user)
        logged_in = True
        return HttpResponse(simplejson.dumps({'redirect' : 'true'}), content_type='application/json')
    else:
        return HttpResponse(simplejson.dumps({'errors': dict(form.errors.items())}), content_type='application/json')

有什么想法吗？

如果我使用不启用js的登录功能，表单将显示所有相关的错误消息。

我的LoginForm：

from django import forms
from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth import authenticate
from django.utils.translation import ugettext_lazy as _

class LoginForm(AuthenticationForm):
    username = forms.CharField(min_length=5, max_length=30,error_messages={'required':_("please enter a username"), 'min_length':_("username must be at least 5 characters"), 'max_length':_("username must be at less than 30 characters")})
    password = forms.CharField(min_length=6, error_messages={'required':_("please enter a password"), 'min_length':_("password must be at least 6 characters")})

    def clean(self):
        username = self.cleaned_data.get('username')
        password = self.cleaned_data.get('password')

        if username and password:
            self.user_cache = authenticate(username=username, password=password)
            if self.user_cache is None:
                raise forms.ValidationError(_("you have entered an incorrect username and/or password"))
            elif not self.user_cache.is_active:
            raise forms.ValidationError(_("This account is inactive."))
        self.check_for_test_cookie()
        return self.cleaned_data

Answer 1

您尚未向我们展示您的LoginForm的样子。假设它只有两个CharField，只要你提供了用户名和密码，我就不会发现任何错误。

要显示无效的用户名和密码组合的错误，您的表单必须包含用于验证登录数据的逻辑。

幸运的是，你自己没有写过这个，你可以使用内置AuthenticationForm的Django。如果用户名和密码无效，则会返回错误。

from django.contrib.auth.forms imoirt AuthenticationForm
from django.contrib.auth import login as auth_login

# in the view
if request.method == "POST":
    form = AuthenticationForm(data=request.POST)
    if form.is_valid():
        # if the form is valid, the user has provided a valid 
        # username and password. We can get the user with the 
        # form.get_user method and log them in
        auth_login(request, form.get_user())
        # return suitable ajax responses

Answer 2

尝试类似：

return HttpResponse(simplejson.dumps({'errors': form.errors.as_text()}), content_type='application/json')

Django空错误消息

2 个答案: