Get "ordered" attribute from Meta

src/apispec/ext/marshmallow/openapi.py

@@ -177,7 +177,7 @@ def schema2jsonschema(self, schema):
         fields = get_fields(schema)
         Meta = getattr(schema, "Meta", None)
         partial = getattr(schema, "partial", None)
-        ordered = getattr(schema, "ordered", False)
+        ordered = getattr(Meta, "ordered", False)
 
         jsonschema = self.fields2jsonschema(fields, partial=partial, ordered=ordered)
 

tests/test_ext_marshmallow_openapi.py

@@ -1,4 +1,5 @@
 import pytest
+from collections import OrderedDict
 from datetime import datetime
 
 from marshmallow import EXCLUDE, fields, INCLUDE, RAISE, Schema, validate
@@ -102,6 +103,21 @@ class BandSchema(Schema):
         res = openapi.schema2jsonschema(BandSchema(partial=("drummer",)))
         assert res["required"] == ["bassist"]
 
+    @pytest.mark.parametrize("ordered_schema", (True, False))
+    def test_ordered(self, openapi, ordered_schema):
+        class BandSchema(Schema):
+            class Meta:
+                ordered = ordered_schema
+
+            drummer = fields.Str()
+            bassist = fields.Str()
+
+        res = openapi.schema2jsonschema(BandSchema)
+        assert isinstance(res["properties"], OrderedDict) == ordered_schema
+
+        res = openapi.schema2jsonschema(BandSchema())
+        assert isinstance(res["properties"], OrderedDict) == ordered_schema
+
     def test_no_required_fields(self, openapi):
         class BandSchema(Schema):
             drummer = fields.Str()