Haystack 2

search_indexes.py

from django.db import Count

from haystack import indexes

from learnit.models import Course


class CourseIndex(indexes.SearchIndex, indexes.Indexable):
	text = indexes.CharField(document=True, use_template=True)
	author = indexes.IntegerField(model_attr="user_id")
	tags = indexes.CharField(model_attr="tags")
	
	# slide_count is set during index_queryset.
	slide_count = indexes.IntegerField(model_attr="slide_count")
	
	def get_model(self):
		return Course
	
	def index_queryset(self):
		return self.get_model().objects.annotate(slide_count=Count('slides'))