Django TypeError'QueryDict'对象不可调用

Question

我找过那些经历过我目前遇到的同样问题的帖子.但我还没有找到解决方案.我的问题是:

我有一个标签列表.由...生成{% for tag in all_tags %}.每个标签都有一个tagstatus形式.当用户从下拉列表中选择一个选项时,表单会提交并且应该保存TagStatus对象(标签对TagStatus是foreignKey'd).但是,返回的是:

Exception Type: TypeError
Exception Value: 'QueryDict' object is not callable

HTML:

<form class="nice" id="status-form" method="POST" action="">
     {% csrf_token %}
     <input type="hidden" name="status_check" />
     <input type='hidden' name="tag" value="{{ tag }}" />
     <select name="select" id="positionSelect" class="input-text category" onchange="this.form.submit()">
          <option name="all" value="0">Your Status</option>
          <option name="investing" value="1">Status 1</option>
          <option name="selling" value="2">Status 2</option>
          <option name="interested" value="3">Status 3</option>
     </select>
</form>

views.py:

@login_required
def tags(request):
    all_tags = Tag.objects.all()
    context = base_context(request)
    if request.method == 'POST':
        if 'status_check' in request.POST:
            status = request.GET('status')
            tag = request.GET('tag')
            user = request.user
            tag_status, created = TagStatus.objects.get_or_create(status=len(status), tag=tag, user=user).save()

            response = simplejson.dumps({"status": "Successfully changed status"})
        else:
            response = simplejson.dumps({"status": "Error"})
            return HttpResponse (response, mimetype='application/json')
    context['all_tags'] = all_tags
    return render_to_response('tags/tag.html', context, context_instance=RequestContext(request))

models.py(如果相关):

class TagStatus(models.Model):
    user = models.ForeignKey(User, null=True, unique=True)
    status = models.CharField(max_length=2, choices=tag_statuses)
    tag = models.ForeignKey(Tag, null=True, blank=True)

    def __unicode__(self):
        return self.status

    def save(self, *args, **kwargs):
        super(TagStatus, self).save(*args, **kwargs)

从我收集的内容来看,这与状态不是一个数字有关.但是当我将它转换为int时.我犯了同样的错误.请帮我.为什么会这样？什么是修复？我不太清楚如何解决这个问题.提前谢谢你的帮助.

Answer 1

我相信你遇到的错误是这些:

status = request.GET('status')
tag = request.GET('tag')

request.GET是一个QueryDict,并在尝试"调用"一个不可调用的对象后添加().您正在寻找的语法似乎是字典查找语法:

status = request.GET['status']
tag = request.GET['tag']

Answer 2

或者只是调用 GETs get 来获取你的值

status = request.GET.get('status')
tag = request.GET.get('tag')