Question

我正在尝试在django中构建jquery自动完成，但它在浏览器中返回此响应＆＃34;视图rango.views.AutoCompleteView没有返回HttpResponse对象。＆＃34;我哪里错了？

搜索框

<form id = "aa"  class = "form-inline" method = "post" action="">

    {% csrf_token %}
    <input type="text"  name = "cat_name" class = "form-control" id = "cat" value = ""/>
    <input class ="btn btn-sm btn-info" type="submit"/>

</form>

的javascript

$(function() {
  $("#cat").autocomplete({          
  source: "/rango/autocomplete/",
  minLength:2,
  });
});

视图

class AutoCompleteView(FormView):
def get(self,request,*args,**kwargs):
    data = request.GET
    item = data.get("term")

    if item:
        cats = Category.objects.filter(name__icontains = item)
    else:
        cats = Category.objects.all()
        results = []

        for cat in cats:
            cat_json = {}
            cat_json['id'] = cat.id
            cat_json['label'] = cat.item
            cat_json['value'] = cat.item
            results.append(cat_json)
            data = json.dumps(results)
            mimetype = 'application/json'

            return HttpResponse(data,mimetype)

urls.py

  url(r'^autocomplete/$',AutoCompleteView.as_view())

Answer 1

请注意，只有在您没有“期限”的情况下，您的观看才会返回HttpResponse在request.GET中或在Category模型中有条目。尝试使用此缩进重写代码：

class AutoCompleteView(FormView):
def get(self,request,*args,**kwargs):
    data = request.GET
    item = data.get("term")

    if item is not None:
        cats = Category.objects.filter(name__icontains = item)
    else:
        cats = Category.objects.all()

    results = []

    for cat in cats:
        cat_json = {}
        cat_json['id'] = cat.id
        cat_json['label'] = cat.item
        cat_json['value'] = cat.item
        results.append(cat_json)
    data = json.dumps(results)
    mimetype = 'application/json'

    return HttpResponse(data, mimetype)

了解它的不同之处，这样您无论如何都会返回HttpResponse。

Answer 2

您需要返回一个列表，因此您需要使用 json.dumps（）功能，并且您的缩进看起来非常糟糕，不要对齐返回在 for循环 。

中

return HttpResponse(json.dumps(results))

请关注@ valentjedi的回答。

django jquery自动完成不返回结果

2 个答案: