Resolve "Frontend for Models"

Closes #1 (closed)

aleksis/apps/lesrooster/schema/__init__.py

 import graphene
 
+from .slot import (
+    SlotType,
+    SlotCreateMutation,
+    SlotDeleteMutation,
+    SlotBatchPatchMutation
+)
 from .validity_range import (
     ValidityRangeType,
     ValidityRangeCreateMutation,
     ValidityRangeDeleteMutation,
     ValidityRangeBatchPatchMutation
 )
-from ..models import ValidityRange
+from ..models import Slot, ValidityRange
 
 
 class Query(graphene.ObjectType):
+    slots = graphene.List(SlotType)
     validity_ranges = graphene.List(ValidityRangeType)
 
     current_validity_range = graphene.Field(ValidityRangeType)
@@ -22,8 +29,16 @@ class Query(graphene.ObjectType):
     def resolve_validity_ranges(root, info):
         return ValidityRange.objects.all()
 
+    @staticmethod
+    def resolve_current_validity_range(root, info):
+        return ValidityRange.current
+
 
 class Mutation(graphene.ObjectType):
+    create_slot = SlotCreateMutation.Field()
+    delete_slot = SlotDeleteMutation.Field()
+    update_slots = SlotBatchPatchMutation.Field()
+
     create_validity_range = ValidityRangeCreateMutation.Field()
     delete_validity_range = ValidityRangeDeleteMutation.Field()
     update_validity_ranges = ValidityRangeBatchPatchMutation.Field()