search_sites.py

coach_models = [ 
    (health.models.HealthMessage, health.search_indexes.HealthMessageIndex),
    (django.contrib.auth.models.User, health.search_indexes.UserIndex),
]
coach_site = haystack.sites.SearchSite()
coach_indexes = {}

def setup_signals(model):

    index = coach_site.get_index(model)

    @receiver(pre_delete, sender=model)
    def _remove_on_delete(sender, instance=None, **kwargs):
        index.backend.remove(instance)
        coach_logger.debug('removed %r instance', model)

    @receiver(post_save, sender=model)
    def _update_on_save(sender, instance=None, **kwargs):
        index.backend.update(index, [instance])
        coach_logger.debug('updated %r instance', model)
            
    coach_logger.info('configured receivers for %r', model)
    return _remove_on_delete, _update_on_save


for model, index in coach_models:
    try:
        haystack.site.unregister(model)
    except NotRegistered:
        pass
    coach_site.register(model, index)
    setup_signals(model)