如何获取字典并发送JSON响应

Question

我有以下功能，def facebooktest(request):    fb_value = ast.literal_eval(request.body)    fb_foodies = Foodie.objects.filter(facebook_id__in = fb_value.values())    for fb_foodie in fb_foodies:        state = request.user.relationships.following().filter(username = fb_foodie.user.username).exists()        userData = {            'fbid': fb_foodie.facebook_id,            'followState': int(state),                }基本上我正在检查我的django应用程序上有哪些用户的Facebook朋友。如果是，则返回followState。followState基本上返回1或0。如果用户已经在我的Django应用程序上关注他们，则返回1；如果用户在我的Django应用程序上未关注其Facebook朋友，则返回0。我想将json类型字典返回给该用户，如下所示：[{fbid:222222222222, followState: 0}, {fbid:111111111111, followState: 1}, {fbid:435433434534, followState:1}]

Answer 1

def facebooktest(request):

    fb_value = ast.literal_eval(request.body)

    fb_foodies = Foodie.objects.filter(facebook_id__in = fb_value.values())

    response = []

    for fb_foodie in fb_foodies:

        state = request.user.relationships.following().filter(username = fb_foodie.user.username).exists()

        userData = {

            'fbid': fb_foodie.facebook_id,

            'followState': int(state),

                }

        response.append(userData)

    return json.dumps(response)

Answer 2

我认为您正在寻找这个：

return HttpResponse(simplejson.dumps(response_dict), mimetype='application/json')

其中“ response_dict”将是您的字典。

Answer 3

django.forms.models包中有一个用于该功能的模型：model_to_dict

from django.forms.models import model_to_dict

model_to_dict(your_model, fields=[], exclude=[])

从帮助中：

model_to_dict(instance, fields=None, exclude=None)

    Returns a dict containing the data in ``instance`` suitable for passing as

    a Form's ``initial`` keyword argument.

    ``fields`` is an optional list of field names. If provided, only the named

    fields will be included in the returned dict.

    ``exclude`` is an optional list of field names. If provided, the named

    fields will be excluded from the returned dict, even if they are listed in

    the ``fields`` argument.