Add basic knowledge queries on server

server/api/schema.py

@@ -7,6 +7,7 @@ from graphene_django.debug import DjangoDebug
 from api import graphene_wagtail  # Keep this import exactly here, it's necessary for StreamField conversion
 from assignments.schema.mutations import AssignmentMutations
 from assignments.schema.queries import AssignmentsQuery, StudentSubmissionQuery
+from basicknowledge.queries import BasicKnowledgeQuery
 from books.schema.mutations.main import BookMutations
 from books.schema.queries import BookQuery
 from core.schema.mutations.main import CoreMutations
@@ -18,7 +19,7 @@ from users.schema import UsersQuery
 
 
 class Query(UsersQuery, RoomsQuery, ObjectivesQuery, BookQuery, AssignmentsQuery, StudentSubmissionQuery,
-            graphene.ObjectType):
+            BasicKnowledgeQuery, graphene.ObjectType):
     node = relay.Node.Field()
 
     if settings.DEBUG:

server/basicknowledge/queries.py

@@ -0,0 +1,32 @@
+import graphene
+from graphene import relay
+from graphene_django import DjangoObjectType
+from graphene_django.filter import DjangoFilterConnectionField
+
+from api.utils import get_object
+from .models import BasicKnowledge
+
+
+class BasicKnowledgeNode(DjangoObjectType):
+    class Meta:
+        model = BasicKnowledge
+        filter_fields = ['slug']
+        interfaces = (relay.Node,)
+        only_fields = [
+            'slug', 'title', 'type', 'contents',
+        ]
+
+
+class BasicKnowledgeQuery(object):
+    basic_knowledge = graphene.Field(BasicKnowledgeNode, slug=graphene.String(), id=graphene.ID())
+    basic_knowledge_pages = DjangoFilterConnectionField(BasicKnowledgeNode)
+
+    def resolve_basic_knowledge(self, info, **kwargs):
+        slug = kwargs.get('slug')
+        room_id = kwargs.get('id')
+
+        if room_id is not None:
+            return get_object(BasicKnowledge, room_id)
+        if slug is not None:
+            return BasicKnowledge.objects.get(slug=slug)
+        return None