django view json decoder auto warp status & errormsg

utils.py

def json_api(func):

    def deco(*args, **kwargs):
        result = {}
        try:
            result['status'] = 0
            result['msg'] = "success"
            result['data'] = func(*args, **kwargs)
        except Exception,e:
            result['status'] = e.errorno if hasattr(e, 'errorno') else 1
            result['msg'] = e.message
        finally:
            result = json.dumps(result)
            return HttpResponse(result, content_type="application/json")

    return deco