@@ -0,0 +1,319 @@
+from core.models import Volume%0Afrom rest_framework import serializers%0Afrom .provider_serializer import ProviderSerializer%0A%0A%0Aclass VolumeSerializer(serializers.ModelSerializer):%0A    provider = ProviderSerializer()%0A%0A    class Meta:%0A        model = Volume%0A        fields = ('id', 'size', 'name', 'start_date', 'provider')%0A

add volume serializer