Fix wrong import of DRF constant

dodobas · dodobas · commit 9d3e288ae230 · 2018-03-05T15:16:32.000+01:00
We are stuck on DRF 3.5.1 because on 3.5.2 this PR got merged encode/django-rest-framework#4628
diff --git a/temba/api/v2/fields.py b/temba/api/v2/fields.py
@@ -4,7 +4,7 @@
 import six
 
 from django.db.models import Q
-from rest_framework import serializers
+from rest_framework import serializers, relations
 
 from temba.campaigns.models import Campaign, CampaignEvent
 from temba.channels.models import Channel
@@ -133,7 +133,7 @@ def many_init(cls, *args, **kwargs):
         """
         list_kwargs = {'child_relation': cls(*args, **kwargs)}
         for key in kwargs.keys():
-            if key in serializers.MANY_RELATION_KWARGS:
+            if key in relations.MANY_RELATION_KWARGS:
                 list_kwargs[key] = kwargs[key]
         return TembaModelField.LimitedSizeList(**list_kwargs)
 
