json - 如何使用 jquery 从 db 中正确获取 django 模型？

Question

我正在尝试从 django 获取模型，但没有显示任何内容。该应用程序部署在 Google App Engine 上。

这是我看到的错误：

AttributeError at /get_companies_json

'str' object has no attribute 'status_code'

Request Method:     GET
Request URL:    http://127.0.0.1:8000/get_companies_json
Django Version:     1.3
Exception Type:     AttributeError
Exception Value:    

'str' object has no attribute 'status_code'

以下是我的网址，查看功能：

网址：

('^get_companies_json$', 'companies.views.all_companies_json')

视图功能：

def all_companies_json(request):
    # json_serializer = serializers.get_serializer("json")();
    companies_json = serializers.serialize("json", Company.objects.filter(approved = True));
    return companies_json;

jQuery：

$.getJSON("/get_companies_json",
            function(data){
                $.each(data.items, function(i, item){
                    console.log(item);
                });             
            }
        );      

我正在关注 jQuery 网站上的示例：http: //api.jquery.com/jQuery.getJSON/

我究竟做错了什么？

Answer 1

我认为这个功能

def all_companies_json(request):
    # json_serializer = serializers.get_serializer("json")();
    companies_json = serializers.serialize("json", Company.objects.filter(approved = True));
    return companies_json;

需要改为

def all_companies_json(request):
    # json_serializer = serializers.get_serializer("json")();
    companies_json = serializers.serialize("json", Company.objects.filter(approved = True));
    return HttpResponse(companies_json, mimetype="application/json")