Added Search API

The API now exposes endpoints for searching courses and course runs.

ECOM-4747

course_discovery/apps/api/serializers.py

+# pylint: disable=abstract-method
+
+import datetime
 from urllib.parse import urlencode
 
 from django.contrib.auth import get_user_model
 from django.utils.translation import ugettext_lazy as _
+from drf_haystack.serializers import HaystackSerializer, HaystackFacetSerializer
 from rest_framework import serializers
 
 from course_discovery.apps.catalogs.models import Catalog
 from course_discovery.apps.course_metadata.models import (
     Course, CourseRun, Image, Organization, Person, Prerequisite, Seat, Subject, Video
 )
+from course_discovery.apps.course_metadata.search_indexes import CourseIndex, CourseRunIndex
 
 User = get_user_model()
 
+COMMON_IGNORED_FIELDS = ('text',)
+COMMON_SEARCH_FIELD_ALIASES = {
+    'q': 'text',
+}
+COURSE_RUN_FACET_FIELD_OPTIONS = {
+    'level_type': {},
+    'organizations': {},
+    'prerequisites': {},
+    'subjects': {},
+    'language': {},
+    'transcript_languages': {},
+    'pacing_type': {},
+    'start': {
+        "start_date": datetime.datetime.now() - datetime.timedelta(days=365),
+        "end_date": datetime.datetime.now(),
+        "gap_by": "month",
+        "gap_amount": 1,
+    },
+    'content_type': {},
+}
+COURSE_RUN_SEARCH_FIELDS = (
+    'key', 'title', 'short_description', 'full_description', 'start', 'end', 'enrollment_start', 'enrollment_end',
+    'pacing_type', 'language', 'transcript_languages', 'marketing_url', 'text',
+)
+
 
 def get_marketing_url_for_user(user, marketing_url):
     """
@@ -47,12 +77,14 @@ class NamedModelSerializer(serializers.ModelSerializer):
 
 class SubjectSerializer(NamedModelSerializer):
     """Serializer for the ``Subject`` model."""
+
     class Meta(NamedModelSerializer.Meta):
         model = Subject
 
 
 class PrerequisiteSerializer(NamedModelSerializer):
     """Serializer for the ``Prerequisite`` model."""
+
     class Meta(NamedModelSerializer.Meta):
         model = Prerequisite
 
@@ -169,7 +201,7 @@ class CourseRunSerializer(TimestampModelSerializer):
         return get_marketing_url_for_user(self.context['request'].user, obj.marketing_url)
 
 
-class ContainedCourseRunsSerializer(serializers.Serializer):  # pylint: disable=abstract-method
+class ContainedCourseRunsSerializer(serializers.Serializer):
     """Serializer used to represent course runs contained by a catalog."""
     course_runs = serializers.DictField(
         child=serializers.BooleanField(),
@@ -207,7 +239,7 @@ class CourseSerializerExcludingClosedRuns(CourseSerializer):
     course_runs = CourseRunSerializer(many=True, source='active_course_runs')
 
 
-class ContainedCoursesSerializer(serializers.Serializer):  # pylint: disable=abstract-method
+class ContainedCoursesSerializer(serializers.Serializer):
     """Serializer used to represent courses contained by a catalog."""
     courses = serializers.DictField(
         child=serializers.BooleanField(),
@@ -330,3 +362,70 @@ class FlattenedCourseRunWithCourseSerializer(CourseRunSerializer):
 
     def get_course_key(self, obj):
         return obj.course.key
+
+
+class CourseSearchSerializer(HaystackSerializer):
+    content_type = serializers.CharField(source='model_name')
+
+    class Meta:
+        field_aliases = COMMON_SEARCH_FIELD_ALIASES
+        fields = ('key', 'title', 'short_description', 'full_description', 'text',)
+        ignore_fields = COMMON_IGNORED_FIELDS
+        index_classes = [CourseIndex]
+
+
+class CourseFacetSerializer(HaystackFacetSerializer):
+    serialize_objects = True
+
+    class Meta:
+        field_aliases = COMMON_SEARCH_FIELD_ALIASES
+        field_options = {
+            'level_type': {},
+            'organizations': {},
+            'prerequisites': {},
+            'subjects': {},
+        }
+        ignore_fields = COMMON_IGNORED_FIELDS
+
+
+class CourseRunSearchSerializer(HaystackSerializer):
+    content_type = serializers.CharField(source='model_name')
+
+    class Meta:
+        field_aliases = COMMON_SEARCH_FIELD_ALIASES
+        fields = COURSE_RUN_SEARCH_FIELDS
+        ignore_fields = COMMON_IGNORED_FIELDS
+        index_classes = [CourseRunIndex]
+
+
+class CourseRunFacetSerializer(HaystackFacetSerializer):
+    serialize_objects = True
+
+    class Meta:
+        field_aliases = COMMON_SEARCH_FIELD_ALIASES
+        field_options = COURSE_RUN_FACET_FIELD_OPTIONS
+        ignore_fields = COMMON_IGNORED_FIELDS
+
+
+class AggregateSearchSerializer(HaystackSerializer):
+    class Meta:
+        field_aliases = COMMON_SEARCH_FIELD_ALIASES
+        fields = COURSE_RUN_SEARCH_FIELDS
+        ignore_fields = COMMON_IGNORED_FIELDS
+        serializers = {
+            CourseRunIndex: CourseRunSearchSerializer,
+            CourseIndex: CourseSearchSerializer,
+        }
+
+
+class AggregateFacetSearchSerializer(HaystackFacetSerializer):
+    serialize_objects = True
+
+    class Meta:
+        field_aliases = COMMON_SEARCH_FIELD_ALIASES
+        field_options = COURSE_RUN_FACET_FIELD_OPTIONS
+        ignore_fields = COMMON_IGNORED_FIELDS
+        serializers = {
+            CourseRunIndex: CourseRunFacetSerializer,
+            CourseIndex: CourseFacetSerializer,
+        }

course_discovery/apps/api/v1/tests/test_views/test_search.py

+import json
+import urllib.parse
+
+import ddt
+from django.core.urlresolvers import reverse
+from rest_framework.test import APITestCase
+
+from course_discovery.apps.core.tests.factories import UserFactory, USER_PASSWORD
+from course_discovery.apps.core.tests.mixins import ElasticsearchTestMixin
+from course_discovery.apps.course_metadata.tests.factories import CourseRunFactory
+
+
+@ddt.ddt
+class CourseRunSearchViewSetTests(ElasticsearchTestMixin, APITestCase):
+    """ Tests for CourseRunSearchViewSet. """
+    faceted_path = reverse('api:v1:search-course_runs-facets')
+    list_path = reverse('api:v1:search-course_runs-list')
+
+    def setUp(self):
+        super(CourseRunSearchViewSetTests, self).setUp()
+        self.user = UserFactory()
+        self.client.login(username=self.user.username, password=USER_PASSWORD)
+
+    def get_search_response(self, query=None, faceted=False):
+        qs = ''
+
+        if query:
+            qs = urllib.parse.urlencode({'q': query})
+
+        path = self.faceted_path if faceted else self.list_path
+        url = '{path}?{qs}'.format(path=path, qs=qs)
+        return self.client.get(url)
+
+    def serialize_date(self, d):
+        return d.strftime('%Y-%m-%dT%H:%M:%S') if d else None
+
+    def serialize_language(self, language):
+        return language.name
+
+    def serialize_course_run(self, course_run):
+        return {
+            'transcript_languages': [self.serialize_language(l) for l in course_run.transcript_languages.all()],
+            'short_description': course_run.short_description,
+            'start': self.serialize_date(course_run.start),
+            'end': self.serialize_date(course_run.end),
+            'enrollment_start': self.serialize_date(course_run.enrollment_start),
+            'enrollment_end': self.serialize_date(course_run.enrollment_end),
+            'key': course_run.key,
+            'marketing_url': course_run.marketing_url,
+            'pacing_type': course_run.pacing_type,
+            'language': self.serialize_language(course_run.language),
+            'full_description': course_run.full_description,
+            'title': course_run.title,
+            'content_type': 'courserun'
+        }
+
+    @ddt.data(True, False)
+    def test_authentication(self, faceted):
+        """ Verify the endpoint requires authentication. """
+        self.client.logout()
+        response = self.get_search_response(faceted=faceted)
+        self.assertEqual(response.status_code, 403)
+
+    def test_search(self):
+        """ Verify the view returns search results. """
+        self.assert_successful_search(faceted=False)
+
+    def test_faceted_search(self):
+        """ Verify the view returns results and facets. """
+        course_run, response_data = self.assert_successful_search(faceted=True)
+
+        # Validate the pacing facet
+        expected = {
+            'text': course_run.pacing_type,
+            'count': 1,
+        }
+        self.assertDictContainsSubset(expected, response_data['fields']['pacing_type'][0])
+
+    def assert_successful_search(self, faceted=False):
+        """ Asserts the search functionality returns results for a generated query. """
+
+        # Generate data that should be indexed and returned by the query
+        course_run = CourseRunFactory(course__title='Software Testing')
+        response = self.get_search_response('software', faceted=faceted)
+
+        self.assertEqual(response.status_code, 200)
+        response_data = json.loads(response.content.decode('utf-8'))
+
+        # Validate the search results
+        expected = {
+            'count': 1,
+            'results': [
+                self.serialize_course_run(course_run)
+            ]
+        }
+        actual = response_data['objects'] if faceted else response_data
+        self.assertDictContainsSubset(expected, actual)
+
+        return course_run, response_data

course_discovery/apps/api/v1/urls.py

 """ API v1 URLs. """
-from rest_framework import routers
 from django.conf.urls import include, url
+from rest_framework import routers
 
 from course_discovery.apps.api.v1 import views
 
-
 partners_router = routers.SimpleRouter()
 partners_router.register(r'affiliate_window/catalogs', views.AffiliateWindowViewSet, base_name='affiliate_window')
 partners_urls = partners_router.urls
@@ -17,5 +16,8 @@ router.register(r'catalogs', views.CatalogViewSet)
 router.register(r'courses', views.CourseViewSet, base_name='course')
 router.register(r'course_runs', views.CourseRunViewSet, base_name='course_run')
 router.register(r'management', views.ManagementViewSet, base_name='management')
+router.register(r'search/all', views.AggregateSearchViewSet, base_name='search-all')
+router.register(r'search/courses', views.CourseSearchViewSet, base_name='search-courses')
+router.register(r'search/course_runs', views.CourseRunSearchViewSet, base_name='search-course_runs')
 
 urlpatterns += router.urls

course_discovery/apps/api/v1/views.py

@@ -11,21 +11,21 @@ from django.db.models import Q
 from django.db.models.functions import Lower
 from django.http import HttpResponse
 from django.shortcuts import get_object_or_404
+from drf_haystack.filters import HaystackFacetFilter, HaystackFilter
+from drf_haystack.mixins import FacetMixin
+from drf_haystack.viewsets import HaystackViewSet
 from dry_rest_permissions.generics import DRYPermissions
 from edx_rest_framework_extensions.permissions import IsSuperuser
 from rest_framework import status, viewsets
 from rest_framework.decorators import detail_route, list_route
 from rest_framework.exceptions import PermissionDenied
+from rest_framework.pagination import PageNumberPagination
 from rest_framework.permissions import IsAuthenticated
 from rest_framework.response import Response
 
+from course_discovery.apps.api import serializers
 from course_discovery.apps.api.filters import PermissionsFilter
 from course_discovery.apps.api.renderers import AffiliateWindowXMLRenderer, CourseRunCSVRenderer
-from course_discovery.apps.api.serializers import (
-    CatalogSerializer, CourseSerializer, CourseRunSerializer, ContainedCoursesSerializer,
-    CourseSerializerExcludingClosedRuns, AffiliateWindowSerializer, ContainedCourseRunsSerializer,
-    FlattenedCourseRunWithCourseSerializer
-)
 from course_discovery.apps.catalogs.models import Catalog
 from course_discovery.apps.core.utils import SearchQuerySetWrapper
 from course_discovery.apps.course_metadata.constants import COURSE_ID_REGEX, COURSE_RUN_ID_REGEX
@@ -43,7 +43,7 @@ class CatalogViewSet(viewsets.ModelViewSet):
     lookup_field = 'id'
     permission_classes = (DRYPermissions,)
     queryset = Catalog.objects.all()
-    serializer_class = CatalogSerializer
+    serializer_class = serializers.CatalogSerializer
 
     @transaction.atomic
     def create(self, request, *args, **kwargs):
@@ -103,14 +103,14 @@ class CatalogViewSet(viewsets.ModelViewSet):
         Only courses with active course runs are returned. A course run is considered active if it is currently
         open for enrollment, or will open in the future.
         ---
-        serializer: CourseSerializerExcludingClosedRuns
+        serializer: serializers.CourseSerializerExcludingClosedRuns
         """
 
         catalog = self.get_object()
         queryset = catalog.courses().active()
 
         page = self.paginate_queryset(queryset)
-        serializer = CourseSerializerExcludingClosedRuns(page, many=True, context={'request': request})
+        serializer = serializers.CourseSerializerExcludingClosedRuns(page, many=True, context={'request': request})
         return self.get_paginated_response(serializer.data)
 
     @detail_route()
@@ -120,7 +120,7 @@ class CatalogViewSet(viewsets.ModelViewSet):
 
         A dictionary mapping course IDs to booleans, indicating course presence, will be returned.
         ---
-        serializer: ContainedCoursesSerializer
+        serializer: serializers.ContainedCoursesSerializer
         parameters:
             - name: course_id
               description: Course IDs to check for existence in the Catalog.
@@ -136,7 +136,7 @@ class CatalogViewSet(viewsets.ModelViewSet):
         courses = catalog.contains(course_ids)
 
         instance = {'courses': courses}
-        serializer = ContainedCoursesSerializer(instance)
+        serializer = serializers.ContainedCoursesSerializer(instance)
         return Response(serializer.data)
 
     @detail_route()
@@ -147,7 +147,7 @@ class CatalogViewSet(viewsets.ModelViewSet):
         Only active course runs are returned. A course run is considered active if it is currently
         open for enrollment, or will be open for enrollment in the future.
         ---
-        serializer: FlattenedCourseRunWithCourseSerializer
+        serializer: serializers.FlattenedCourseRunWithCourseSerializer
         """
         catalog = self.get_object()
         courses = catalog.courses().active()
@@ -158,7 +158,9 @@ class CatalogViewSet(viewsets.ModelViewSet):
             for acr in active_course_runs:
                 course_runs.append(acr)
 
-        serializer = FlattenedCourseRunWithCourseSerializer(course_runs, many=True, context={'request': request})
+        serializer = serializers.FlattenedCourseRunWithCourseSerializer(
+            course_runs, many=True, context={'request': request}
+        )
         data = CourseRunCSVRenderer().render(serializer.data)
 
         response = HttpResponse(data, content_type='text/csv')
@@ -174,7 +176,7 @@ class CourseViewSet(viewsets.ReadOnlyModelViewSet):
     lookup_value_regex = COURSE_ID_REGEX
     queryset = Course.objects.all()
     permission_classes = (IsAuthenticated,)
-    serializer_class = CourseSerializer
+    serializer_class = serializers.CourseSerializer
 
     def get_queryset(self):
         q = self.request.query_params.get('q', None)
@@ -210,7 +212,7 @@ class CourseRunViewSet(viewsets.ReadOnlyModelViewSet):
     lookup_value_regex = COURSE_RUN_ID_REGEX
     queryset = CourseRun.objects.all().order_by(Lower('key'))
     permission_classes = (IsAuthenticated,)
-    serializer_class = CourseRunSerializer
+    serializer_class = serializers.CourseRunSerializer
 
     def get_queryset(self):
         q = self.request.query_params.get('q', None)
@@ -244,7 +246,7 @@ class CourseRunViewSet(viewsets.ReadOnlyModelViewSet):
         A dictionary mapping course run keys to booleans,
         indicating course run presence, will be returned.
         ---
-        serializer: ContainedCourseRunsSerializer
+        serializer: serializers.ContainedCourseRunsSerializer
         parameters:
             - name: query
               description: Elasticsearch querystring query
@@ -270,7 +272,7 @@ class CourseRunViewSet(viewsets.ReadOnlyModelViewSet):
                 contains[course_run.key] = True
 
             instance = {'course_runs': contains}
-            serializer = ContainedCourseRunsSerializer(instance)
+            serializer = serializers.ContainedCourseRunsSerializer(instance)
             return Response(serializer.data)
         return Response(status=status.HTTP_400_BAD_REQUEST)
 
@@ -321,7 +323,7 @@ class AffiliateWindowViewSet(viewsets.ViewSet):
     """ AffiliateWindow Resource. """
     permission_classes = (IsAuthenticated,)
     renderer_classes = (AffiliateWindowXMLRenderer,)
-    serializer_class = AffiliateWindowSerializer
+    serializer_class = serializers.AffiliateWindowSerializer
 
     def retrieve(self, request, pk=None):  # pylint: disable=redefined-builtin,unused-argument
         """
@@ -345,5 +347,63 @@ class AffiliateWindowViewSet(viewsets.ViewSet):
              Q(course_run__enrollment_end__gte=datetime.datetime.now(pytz.UTC)))
         )
 
-        serializer = AffiliateWindowSerializer(seats, many=True)
+        serializer = serializers.AffiliateWindowSerializer(seats, many=True)
         return Response(serializer.data)
+
+
+class BaseCourseHaystackViewSet(FacetMixin, HaystackViewSet):
+    document_uid_field = 'key'
+    facet_filter_backends = [HaystackFacetFilter, HaystackFilter]
+    load_all = True
+    lookup_field = 'key'
+    permission_classes = (IsAuthenticated,)
+
+    # NOTE: We use PageNumberPagination because drf-haytack's facet serializer relies on the page_query_param
+    # attribute, and it is more appropriate for search results than our default limit-offset pagination.
+    pagination_class = PageNumberPagination
+
+    def list(self, request, *args, **kwargs):
+        """
+        Search.
+        ---
+        parameters:
+            - name: q
+              description: Search text
+              paramType: query
+              type: string
+              required: false
+        """
+        return super(BaseCourseHaystackViewSet, self).list(request, *args, **kwargs)
+
+    @list_route(methods=["get"], url_path="facets")
+    def facets(self, request):
+        """
+        Returns faceted search results
+        ---
+        parameters:
+            - name: q
+              description: Search text
+              paramType: query
+              type: string
+              required: false
+        """
+        return super(BaseCourseHaystackViewSet, self).facets(request)
+
+
+class CourseSearchViewSet(BaseCourseHaystackViewSet):
+    facet_serializer_class = serializers.CourseFacetSerializer
+    index_models = (Course,)
+    serializer_class = serializers.CourseSearchSerializer
+
+
+class CourseRunSearchViewSet(BaseCourseHaystackViewSet):
+    facet_serializer_class = serializers.CourseRunFacetSerializer
+    index_models = (CourseRun,)
+    serializer_class = serializers.CourseRunSearchSerializer
+
+
+# TODO Remove the detail routes. They don't work, and make no sense here given that we cannot specify the type.
+class AggregateSearchViewSet(BaseCourseHaystackViewSet):
+    """ Search all content types. """
+    facet_serializer_class = serializers.AggregateFacetSearchSerializer
+    serializer_class = serializers.AggregateSearchSerializer

course_discovery/apps/course_metadata/models.py

@@ -267,6 +267,14 @@ class CourseRun(TimeStampedModel):
         value = value or None
         self.full_description_override = value
 
+    @property
+    def subjects(self):
+        return self.course.subjects
+
+    @property
+    def organizations(self):
+        return self.course.organizations
+
     @classmethod
     def search(cls, query):
         """ Queries the search index.

course_discovery/apps/course_metadata/search_indexes.py

@@ -4,18 +4,49 @@ from opaque_keys.edx.keys import CourseKey
 from course_discovery.apps.course_metadata.models import Course, CourseRun
 
 
-class CourseIndex(indexes.SearchIndex, indexes.Indexable):
+class BaseIndex(indexes.SearchIndex):
+    model = None
+
     text = indexes.CharField(document=True, use_template=True)
+    content_type = indexes.CharField(faceted=True)
+
+    def prepare_content_type(self, obj):  # pylint: disable=unused-argument
+        return self.model.__name__.lower()
+
+    def get_model(self):
+        return self.model
+
+    def get_updated_field(self):  # pragma: no cover
+        return 'modified'
+
+    def index_queryset(self, using=None):
+        return self.model.objects.all()
+
+
+class BaseCourseIndex(BaseIndex):
     key = indexes.CharField(model_attr='key', stored=True)
     title = indexes.CharField(model_attr='title')
     short_description = indexes.CharField(model_attr='short_description', null=True)
     full_description = indexes.CharField(model_attr='full_description', null=True)
-    level_type = indexes.CharField(model_attr='level_type__name', null=True)
+    subjects = indexes.MultiValueField(faceted=True)
+    organizations = indexes.MultiValueField(faceted=True)
+
+    def prepare_organizations(self, obj):
+        return ['{key}: {name}'.format(key=organization.key, name=organization.name) for organization in
+                obj.organizations.all()]
+
+    def prepare_subjects(self, obj):
+        return [subject.name for subject in obj.subjects.all()]
+
+
+class CourseIndex(BaseCourseIndex, indexes.Indexable):
+    model = Course
+
+    level_type = indexes.CharField(model_attr='level_type__name', null=True, faceted=True)
     course_runs = indexes.MultiValueField()
     expected_learning_items = indexes.MultiValueField()
-    organizations = indexes.MultiValueField()
-    prerequisites = indexes.MultiValueField()
-    subjects = indexes.MultiValueField()
+
+    prerequisites = indexes.MultiValueField(faceted=True)
 
     def prepare_course_runs(self, obj):
         return [course_run.key for course_run in obj.course_runs.all()]
@@ -23,46 +54,30 @@ class CourseIndex(indexes.SearchIndex, indexes.Indexable):
     def prepare_expected_learning_items(self, obj):
         return [item.value for item in obj.expected_learning_items.all()]
 
-    def prepare_organizations(self, obj):
-        return ['{key}: {name}'.format(key=organization.key, name=organization.name) for organization in
-                obj.organizations.all()]
-
     def prepare_prerequisites(self, obj):
         return [prerequisite.name for prerequisite in obj.prerequisites.all()]
 
-    def prepare_subjects(self, obj):
-        return [subject.name for subject in obj.subjects.all()]
 
-    def get_model(self):
-        return Course
+class CourseRunIndex(BaseCourseIndex, indexes.Indexable):
+    model = CourseRun
 
-    def index_queryset(self, using=None):
-        return self.get_model().objects.all()
-
-    def get_updated_field(self):  # pragma: no cover
-        return 'modified'
-
-
-class CourseRunIndex(indexes.SearchIndex, indexes.Indexable):
-    text = indexes.CharField(document=True, use_template=True)
     course_key = indexes.CharField(model_attr='course__key', stored=True)
-    key = indexes.CharField(model_attr='key', stored=True)
     org = indexes.CharField()
     number = indexes.CharField()
-    title = indexes.CharField(model_attr='title_override', null=True)
-    start = indexes.DateTimeField(model_attr='start', null=True)
+    start = indexes.DateTimeField(model_attr='start', null=True, faceted=True)
     end = indexes.DateTimeField(model_attr='end', null=True)
     enrollment_start = indexes.DateTimeField(model_attr='enrollment_start', null=True)
     enrollment_end = indexes.DateTimeField(model_attr='enrollment_end', null=True)
     announcement = indexes.DateTimeField(model_attr='announcement', null=True)
     min_effort = indexes.IntegerField(model_attr='min_effort', null=True)
     max_effort = indexes.IntegerField(model_attr='max_effort', null=True)
-    language = indexes.CharField(null=True)
-    transcript_languages = indexes.MultiValueField()
-    pacing_type = indexes.CharField(model_attr='pacing_type', null=True)
+    language = indexes.CharField(null=True, faceted=True)
+    transcript_languages = indexes.MultiValueField(faceted=True)
+    pacing_type = indexes.CharField(model_attr='pacing_type', null=True, faceted=True)
+    marketing_url = indexes.CharField(model_attr='marketing_url', null=True)
 
     def _prepare_language(self, language):
-        return '{code}: {name}'.format(code=language.code, name=language.name)
+        return language.name
 
     def prepare_language(self, obj):
         if obj.language:
@@ -79,9 +94,3 @@ class CourseRunIndex(indexes.SearchIndex, indexes.Indexable):
 
     def prepare_transcript_languages(self, obj):
         return [self._prepare_language(language) for language in obj.transcript_languages.all()]
-
-    def get_model(self):
-        return CourseRun
-
-    def get_updated_field(self):  # pragma: no cover
-        return 'modified'

course_discovery/apps/course_metadata/views.py

@@ -2,4 +2,8 @@ from django.views.generic import TemplateView
 
 
 class QueryPreviewView(TemplateView):
-    template_name = 'catalogs/preview.html'
+    template_name = 'demo/query_preview.html'
+
+
+class SearchDemoView(TemplateView):
+    template_name = 'demo/search.html'

course_discovery/templates/demo/search.html

+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Search Demo</title>
+</head>
+<body>
+<h2>Search</h2>
+
+<form method="get" action=".">
+    <table>
+        {{ form.as_table }}
+        <tr>
+            <td>&nbsp;</td>
+            <td>
+                <input type="submit" value="Search">
+            </td>
+        </tr>
+    </table>
+
+    {% if query %}
+        <h3>Results</h3>
+
+        {% for result in page.object_list %}
+            <p>
+                <a href="{{ result.object.get_absolute_url }}">{{ result.object.title }}</a>
+            </p>
+        {% empty %}
+            <p>No results found.</p>
+        {% endfor %}
+
+        {% if page.has_previous or page.has_next %}
+            <div>
+                {% if page.has_previous %}
+                    <a href="?q={{ query }}&amp;page={{ page.previous_page_number }}">{% endif %}&laquo; Previous
+                {% if page.has_previous %}</a>{% endif %}
+                |
+                {% if page.has_next %}<a href="?q={{ query }}&amp;page={{ page.next_page_number }}">{% endif %}
+                Next &raquo;{% if page.has_next %}</a>{% endif %}
+            </div>
+        {% endif %}
+    {% else %}
+        {# Show some example queries to run, maybe query syntax, something else? #}
+    {% endif %}
+</form>
+</body>
+</html>
\ No newline at end of file

course_discovery/templates/search/indexes/course_metadata/courserun_text.txt

@@ -3,3 +3,7 @@
 {{ object.short_description|default:'' }}
 {{ object.full_description|default:'' }}
 {{ object.pacing_type|default:'' }}
+
+{% for language in object.transcript_languages.all %}
+    {{ language }}
+{% endfor %}

requirements/base.txt

@@ -11,6 +11,7 @@ djangorestframework-csv==1.4.1
 djangorestframework-jwt==1.8.0
 djangorestframework-xml==1.3.0
 django-rest-swagger[reST]==0.3.7
+drf-haystack==1.6.0rc1
 dry-rest-permissions==0.1.6
 edx-auth-backends==0.5.0
 edx-ccx-keys==0.2.0