add duration field #78

drf_spectacular/openapi.py

@@ -462,6 +462,9 @@ def _map_serializer_field(self, field, direction):
         if isinstance(field, serializers.UUIDField):
             return append_meta(build_basic_type(OpenApiTypes.UUID), meta)
 
+        if isinstance(field, serializers.DurationField):
+            return append_meta(build_basic_type(OpenApiTypes.STR), meta)
+
         if isinstance(field, serializers.IPAddressField):
             # TODO this might be a DRF bug. protocol is not propagated to serializer although it
             #  should have been. results in always 'both' (thus no format)

tests/test_fields.py

@@ -1,5 +1,5 @@
 import uuid
-from datetime import datetime, date
+from datetime import datetime, date, timedelta
 from decimal import Decimal
 
 import pytest
@@ -44,6 +44,7 @@ class AllFields(models.Model):
     field_possmallint = models.PositiveSmallIntegerField()
     field_nullbool = models.NullBooleanField()
     field_time = models.TimeField()
+    field_duration = models.DurationField()
     # field_image = models.ImageField()
     # field_filepath = models.FilePathField()
 
@@ -191,6 +192,7 @@ def test_model_setup_is_valid():
         field_possmallint=1,
         field_nullbool=None,
         field_time='00:05:23.283',
+        field_duration=timedelta(seconds=10),
         # relations
         field_foreign=aux,
         field_o2o=aux,

tests/test_fields.yml

@@ -228,6 +228,8 @@ components:
         field_time:
           type: string
           format: time
+        field_duration:
+          type: string
         field_foreign:
           type: string
           format: uuid
@@ -251,6 +253,7 @@ components:
       - field_datetime
       - field_decimal
       - field_decimal_uncoerced
+      - field_duration
       - field_email
       - field_file
       - field_float