Haystack cannot find results

Question

I am new to Haystack and I just installed it using Whoosh .

base.py

HAYSTACK_CONNECTIONS = {
    'default': {
        'ENGINE': 'haystack.backends.whoosh_backend.WhooshEngine',
        'PATH': os.path.join(os.path.dirname(__file__), 'whoosh_index'),
    },
}

My ad model (located in the app posts):

class Announcement(models.Model):
    title = models.CharField(null=True, max_length=256)
    description = models.CharField('Announcement description',
                                   null=True, max_length=500)
    slug = models.SlugField(default=uuid.uuid1, unique=True)
    author = models.ForeignKey(to=User, related_name='posts',
                               null=True, blank=True)

So, I built an index file with a name search_indexes.pylocated inside the application posts.

class AnnouncementIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.CharField(document=True, use_template=True)
    title = indexes.CharField(model_attr="title")
    description = indexes.CharField(model_attr="description")
    author = indexes.CharField(model_attr='author')
    status = indexes.BooleanField(model_attr='status')

    def get_model(self):
        return Announcement

    def index_queryset(self, using=Announcement):
        return self.get_model().objects.filter(status=False)

My search and the search form do not fit in the application posts, they are in the application with the name homepages. This is the form homepages/forms.py:

class PostsSearchForm(SearchForm):

    def no_query_found(self):
        return self.searchqueryset.all()

And the view homepages/views.py:

def home(request):
    categories = Category.objects.all()
    if request.user.is_authenticated():
        current_user = request.user
        form = PostsSearchForm(request.GET)
        posts = None
        if form.data != {} and form.is_valid():
            posts = form.search()
            return render_to_response('search/search.html', {
                'posts': posts,
                'form': form
            })

The template with the form is in the file templates/homepages/home.html:

        <form method="GET">
              {% csrf_token %}
              {{ form.q }}
        </form>

And I have a file templates/searches/indexes/posts/announcement_text.txt:

{{ object.title }}
{{ object.description }}