Django, JSON и формы

# -*- coding: utf-8 -*-

from __future__ import absolute_imports
from django.utils import simplejson as json
from django import http

from app.items import forms
from app.items import models
from api.items import serializers

from rest import response


def api_post_view(request):
    if request.method == 'POST' and request.is_ajax():
        # Ну да, всего одна строка. А вы что думали?
        raw_data = json.loads(request.POST)
        new_item_form = forms.CreateItemForm(raw_data)
        if new_item_form.is_valid():
            new_item = new_item_form.save()
            serializer = serializers.ItemReadSerializer()
            return reponse.JsonResponse(serializer.serialize(new_item))
        else:
            return response.JsonResponse(new_tem_form.errors)
    else:
        return http.HttpResponseBadRequest()

from django.core.serializers.json import DjangoJSONEncoder
from django.utils import simplejson as json
from django.http.response import HttpResponse

class JsonResponse(HttpResponse):
    """
    An HTTP response class that consumes data to be serialized to JSON.

    :param data: Data to be dumped into json. By default only ``dict`` objects
      are allowed to be passed due to a security flaw before EcmaScript 5. See
      the ``safe`` parameter for more information.
    :param encoder: Should be a json encoder class. Defaults to
      ``django.core.serializers.json.DjangoJSONEncoder``.
    :param safe: Controls if only ``dict`` objects may be serialized. Defaults
      to ``True``.
    :param json_dumps_params: A dictionary of kwargs passed to json.dumps().
    """

    def __init__(self, data, encoder=DjangoJSONEncoder, safe=True,
                 json_dumps_params=None, **kwargs):
        if safe and not isinstance(data, dict):
            raise TypeError(
                'In order to allow non-dict objects to be serialized set the '
                'safe parameter to False.'
            )
        if json_dumps_params is None:
            json_dumps_params = {}
        kwargs.setdefault('content_type', 'application/json')
        data = json.dumps(data, cls=encoder, **json_dumps_params)
        super().__init__(content=data, **kwargs)