| srikanth | 116e6e8 | 2014-08-19 07:22:37 -0700 | [diff] [blame] | 1 | # |
| 2 | # Copyright (c) 2013 Big Switch Networks, Inc. |
| 3 | # |
| 4 | # Licensed under the Eclipse Public License, Version 1.0 (the |
| 5 | # "License"); you may not use this file except in compliance with the |
| 6 | # License. You may obtain a copy of the License at |
| 7 | # |
| 8 | # http://www.eclipse.org/legal/epl-v10.html |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| 13 | # implied. See the License for the specific language governing |
| 14 | # permissions and limitations under the License. |
| 15 | # |
| 16 | |
| 17 | from django.http import HttpResponseForbidden, HttpResponse |
| 18 | from django.utils.simplejson import JSONEncoder |
| 19 | from django.utils.encoding import force_unicode |
| 20 | from django.db.models.base import ModelBase |
| 21 | from django.utils.simplejson import dumps |
| 22 | |
| 23 | class JsonResponse(HttpResponse): |
| 24 | """A HttpResponse subclass that creates properly encoded JSON response""" |
| 25 | |
| 26 | def __init__(self, content='', json_opts={}, |
| 27 | mimetype="application/json", *args, **kwargs): |
| 28 | |
| 29 | if content is None: content = [] |
| 30 | content = serialize_to_json(content,**json_opts) |
| 31 | super(JsonResponse,self).__init__(content,mimetype,*args,**kwargs) |
| 32 | |
| 33 | class JsonEncoder(JSONEncoder): |
| 34 | """A JSONEncoder subclass that also handles querysets and models objects.""" |
| 35 | |
| 36 | def default(self,o): |
| 37 | # this handles querysets and other iterable types |
| 38 | try: iterable = iter(o) |
| 39 | except TypeError: pass |
| 40 | else: return list(iterable) |
| 41 | |
| 42 | # this handlers Models objects |
| 43 | try: isinstance(o.__class__,ModelBase) |
| 44 | except Exception: pass |
| 45 | else: return force_unicode(o) |
| 46 | |
| 47 | # delegate the rest to JSONEncoder |
| 48 | return super(JsonEncoder,self).default(obj) |
| 49 | |
| 50 | def serialize_to_json(obj,*args,**kwargs): |
| 51 | """A wrapper for dumps with defaults as: |
| 52 | ensure_ascii=False |
| 53 | cls=JsonEncoder""" |
| 54 | |
| 55 | kwargs['ensure_ascii'] = kwargs.get('ensure_ascii', False) |
| 56 | kwargs['cls'] = kwargs.get('cls', JsonEncoder) |
| 57 | return dumps(obj,*args,**kwargs) |
| 58 | |
| 59 | def as_kwargs(qdict): |
| 60 | kwargs = {} |
| 61 | for k,v in qdict.items(): |
| 62 | kwargs[str(k)] = v |
| 63 | return kwargs |