如何在JSON字符串中包含注释? [英] How to include annotation in JSON string?

问题描述

我有一个视图，该视图返回编码为JSON的货运清单...

I've got a view that returns a list of shipments encoded as JSON...

def get_new_shipments(request):
    # ...
    shipments = Shipment.objects.filter(filter).exclude(**exclude).order_by(order) \
        .annotate(num_bids=Count('bids'), min_bid=Min('bids__amount'), max_bid=Max('bids__amount'))
    return json_response(shipments)

def json_response(data):
    response = HttpResponse(mimetype='application/json')
    serializer = serializers.get_serializer("json")()
    data = list(data)
    serializer.serialize(data, ensure_ascii=False, stream=response)
    return response

但是我在任何地方都看不到JSON中的那些批注...如何将它们包括在内?

But I don't see those annotations in the JSON anywhere... how do I get them to be included?

推荐答案

这似乎可行:

return HttpResponse(simplejson.dumps(list(shipments.values()), ensure_ascii=False, default=json_formatter), mimetype='application/json')

def json_formatter(obj):
    if isinstance(obj, datetime.datetime):
        return obj.isoformat()
    elif isinstance(obj, Decimal):
        return unicode(obj)
    else:
        raise TypeError, 'Object of type %s with value of %s is not JSON serializable' % (type(obj), repr(obj))

信用

这篇关于如何在JSON字符串中包含注释?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！