Merge pull request #195 from pydanny/ajax-docs-example

view<decorating-class-based-views>` using

:func:`~django.contrib.auth.decorators.login_required`, or

alternatively handle unauthorised users in the :meth:`form_valid()`.

AJAX example

------------

Here is a simple example showing how you might go about implementing a form that

works for AJAX requests as well as 'normal' form POSTs::

    import json

    from django.http import HttpResponse

    from django.views.generic.edit import CreateView

    from django.views.generic.detail import SingleObjectTemplateResponseMixin

    class AjaxableResponseMixin(object):

        """

        Mixin to add AJAX support to a form.

        Must be used with an object-based FormView (e.g. CreateView)

        """

        def render_to_json_response(self, context, **response_kwargs):

            data = json.dumps(context)

            response_kwargs['content_type'] = 'application/json'

            return HttpResponse(data, **response_kwargs)

        def form_invalid(self, form):

            if self.request.is_ajax():

                return self.render_to_json_response(form.errors, status=400)

            else:

                return super(AjaxableResponseMixin, self).form_invalid(form)

        def form_valid(self, form):

            if self.request.is_ajax():

                data = {

                    'pk': form.instance.pk,

                }

                return self.render_to_json_response(data)

            else:

                return super(AjaxableResponseMixin, self).form_valid(form)

    class AuthorCreate(AjaxableResponseMixin, CreateView):

        model = Author