ajax上传图片

import os
def upload(request):
    if request.method == 'GET':
        img_list = models.Img.objects.all()
        return render(request,'upload.html',{'img_list': img_list})
    elif request.method == "POST":
        user = request.POST.get('user')
        fafafa = request.POST.get('fafafa')
        obj = request.FILES.get('fafafa')

        file_path = os.path.join('static','upload',obj.name)
        f = open(file_path, 'wb')
        for chunk in obj.chunks():
            f.write(chunk)
        f.close()

        models.Img.objects.create(path=file_path)

        ret = {'status': True, 'path': file_path}

        return HttpResponse(json.dumps(ret))

        function Uploadjq() {
            var dic = new FormData();
            dic.append('user', 'v1');
            dic.append('fafafa', document.getElementById('img').files[0]);

            $.ajax({
                url: '/upload.html',
                type: 'POST',
                data: dic,
                processData: false,  // tell jQuery not to process the data
                contentType: false,  // tell jQuery not to set contentType
                dataType: 'JSON',
                success: function (arg) {
                    if (arg.status){
                        var img = document.createElement('img');
                        img.src = "/" + arg.path;
                        $('#imgs').append(img);
                    }
                }
            })

        }