python之Django: 'AnonymousUser' 对象没有属性 'get_full_name'

我正在尝试在 Django 中创建一个表单，其中包含一个表单字段，该表单字段具有从 User 对象中提取的默认值。

表单.py

class EvangelizedForm(forms.ModelForm): 
    #full_name = forms.CharField(help_text="Full Name") 
    email = forms.CharField(help_text="Email ID") 
    mobile_no = forms.CharField(help_text="Mobile number") 
    twitter_url = forms.CharField(help_text="Twitter URL") 

模型.py

class Evangelized(models.Model): 
    full_name = models.CharField(max_length=128) 
    email = models.EmailField() 
    mobile_no = models.CharField(unique=True, max_length = 10, validators=[RegexValidator(regex='^\w{10}$', message='Mobile number should be strictly of 10 digits.')]) 
    twitter_url = models.CharField(unique=True, max_length=128) 

View .py

def fillform(request): 
    if request.method == 'POST': 
        form = EvangelizedForm(request.POST) 
        if form.is_valid(): 
            form.save(commit=True) 
            return index(request) 
        else: 
            form.errors 
    else: 
        #form = EvangelizedForm() 
        form = EvangelizedForm(initial={'full_name': request.get_full_name()}) 
 
    context = RequestContext(request, 
                           {'request': request, 
                            'user': request.user, 'form':form})     
 
    #return render(request, 'rango/fillform.html', {'form': form, 'context_instance':context})   
    return render_to_response('rango/fillform.html', 
                             context_instance=context) 

但是，我遇到了以下错误:

'AnonymousUser' object has no attribute 'get_full_name' 

这个错误意味着什么，我该如何解决这个错误？

请您参考如下方法:

您很可能想要:

request.user.get_full_name() if request.user.is_authenticated() else ""