Fixes object serialization when there is an inline array property which contains a refed enum (#8387)

* Fixes object inline enum defintion with refed enum item

* Adds refed array model example w/ serialization + deserialization

modules/openapi-generator/src/main/resources/python/model_utils.mustache

@@ -1211,10 +1211,13 @@ def model_to_dict(model_instance, serialize=True):
                 # exist in attribute_map
                 attr = model_instance.attribute_map.get(attr, attr)
             if isinstance(value, list):
-                result[attr] = list(map(
-                    lambda x: model_to_dict(x, serialize=serialize)
-                    if hasattr(x, '_data_store') else x, value
-                ))
+                if not value or isinstance(value[0], PRIMITIVE_TYPES):
+                    # empty list or primitive types
+                    result[attr] = value
+                elif isinstance(value[0], ModelSimple):
+                    result[attr] = [x.value for x in value]
+                else:
+                    result[attr] = [model_to_dict(x, serialize=serialize) for x in value]
             elif isinstance(value, dict):
                 result[attr] = dict(map(
                     lambda item: (item[0],

modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonLegacyClientCodegenTest.java

@@ -18,7 +18,6 @@
 package org.openapitools.codegen.python;
 
 import com.google.common.collect.Sets;
-import com.sun.org.apache.xpath.internal.operations.Bool;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
 import io.swagger.v3.oas.models.media.*;

modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml

@@ -1008,6 +1008,26 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/ArrayOfEnums'
+  /fake/refs/enum-test:
+    post:
+      tags:
+        - fake
+      summary: Object contains enum properties and array properties containing enums
+      operationId: EnumTest
+      requestBody:
+        description: Input object
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/Enum_Test'
+        required: false
+      responses:
+        200:
+          description: Got object containing enums
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Enum_Test'
   /fake/additional-properties-with-array-of-enums:
     get:
       tags:
@@ -1671,6 +1691,12 @@ components:
           $ref: '#/components/schemas/IntegerEnumWithDefaultValue'
         IntegerEnumOneValue:
           $ref: '#/components/schemas/IntegerEnumOneValue'
+        InlineArrayOfStrEnum:
+          type: array
+          items:
+            $ref: '#/components/schemas/StringEnum'
+        ArrayOfStrEnum:
+          $ref: '#/components/schemas/ArrayOfEnums'
     AdditionalPropertiesClass:
       type: object
       properties:

samples/client/petstore/python/petstore_api/model_utils.py

@@ -1493,10 +1493,13 @@ def model_to_dict(model_instance, serialize=True):
                 # exist in attribute_map
                 attr = model_instance.attribute_map.get(attr, attr)
             if isinstance(value, list):
-                result[attr] = list(map(
-                    lambda x: model_to_dict(x, serialize=serialize)
-                    if hasattr(x, '_data_store') else x, value
-                ))
+                if not value or isinstance(value[0], PRIMITIVE_TYPES):
+                    # empty list or primitive types
+                    result[attr] = value
+                elif isinstance(value[0], ModelSimple):
+                    result[attr] = [x.value for x in value]
+                else:
+                    result[attr] = [model_to_dict(x, serialize=serialize) for x in value]
             elif isinstance(value, dict):
                 result[attr] = dict(map(
                     lambda item: (item[0],

samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/model_utils.py

@@ -1493,10 +1493,13 @@ def model_to_dict(model_instance, serialize=True):
                 # exist in attribute_map
                 attr = model_instance.attribute_map.get(attr, attr)
             if isinstance(value, list):
-                result[attr] = list(map(
-                    lambda x: model_to_dict(x, serialize=serialize)
-                    if hasattr(x, '_data_store') else x, value
-                ))
+                if not value or isinstance(value[0], PRIMITIVE_TYPES):
+                    # empty list or primitive types
+                    result[attr] = value
+                elif isinstance(value[0], ModelSimple):
+                    result[attr] = [x.value for x in value]
+                else:
+                    result[attr] = [model_to_dict(x, serialize=serialize) for x in value]
             elif isinstance(value, dict):
                 result[attr] = dict(map(
                     lambda item: (item[0],

samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/model_utils.py

@@ -1493,10 +1493,13 @@ def model_to_dict(model_instance, serialize=True):
                 # exist in attribute_map
                 attr = model_instance.attribute_map.get(attr, attr)
             if isinstance(value, list):
-                result[attr] = list(map(
-                    lambda x: model_to_dict(x, serialize=serialize)
-                    if hasattr(x, '_data_store') else x, value
-                ))
+                if not value or isinstance(value[0], PRIMITIVE_TYPES):
+                    # empty list or primitive types
+                    result[attr] = value
+                elif isinstance(value[0], ModelSimple):
+                    result[attr] = [x.value for x in value]
+                else:
+                    result[attr] = [model_to_dict(x, serialize=serialize) for x in value]
             elif isinstance(value, dict):
                 result[attr] = dict(map(
                     lambda item: (item[0],

samples/openapi3/client/petstore/python/README.md

@@ -88,6 +88,7 @@ Class | Method | HTTP request | Description
 *FakeApi* | [**array_of_enums**](docs/FakeApi.md#array_of_enums) | **POST** /fake/refs/array-of-enums | Array of Enums
 *FakeApi* | [**boolean**](docs/FakeApi.md#boolean) | **POST** /fake/refs/boolean | 
 *FakeApi* | [**composed_one_of_number_with_validations**](docs/FakeApi.md#composed_one_of_number_with_validations) | **POST** /fake/refs/composed_one_of_number_with_validations | 
+*FakeApi* | [**enum_test**](docs/FakeApi.md#enum_test) | **POST** /fake/refs/enum-test | Object contains enum properties and array properties containing enums
 *FakeApi* | [**fake_health_get**](docs/FakeApi.md#fake_health_get) | **GET** /fake/health | Health check endpoint
 *FakeApi* | [**mammal**](docs/FakeApi.md#mammal) | **POST** /fake/refs/mammal | 
 *FakeApi* | [**number_with_validations**](docs/FakeApi.md#number_with_validations) | **POST** /fake/refs/number | 

samples/openapi3/client/petstore/python/docs/EnumTest.md

@@ -12,6 +12,8 @@ Name | Type | Description | Notes
 **string_enum_with_default_value** | [**StringEnumWithDefaultValue**](StringEnumWithDefaultValue.md) |  | [optional] 
 **integer_enum_with_default_value** | [**IntegerEnumWithDefaultValue**](IntegerEnumWithDefaultValue.md) |  | [optional] 
 **integer_enum_one_value** | [**IntegerEnumOneValue**](IntegerEnumOneValue.md) |  | [optional] 
+**inline_array_of_str_enum** | [**[StringEnum]**](StringEnum.md) |  | [optional] 
+**array_of_str_enum** | [**ArrayOfEnums**](ArrayOfEnums.md) |  | [optional] 
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
 

samples/openapi3/client/petstore/python/docs/FakeApi.md

@@ -9,6 +9,7 @@ Method | HTTP request | Description
 [**array_of_enums**](FakeApi.md#array_of_enums) | **POST** /fake/refs/array-of-enums | Array of Enums
 [**boolean**](FakeApi.md#boolean) | **POST** /fake/refs/boolean | 
 [**composed_one_of_number_with_validations**](FakeApi.md#composed_one_of_number_with_validations) | **POST** /fake/refs/composed_one_of_number_with_validations | 
+[**enum_test**](FakeApi.md#enum_test) | **POST** /fake/refs/enum-test | Object contains enum properties and array properties containing enums
 [**fake_health_get**](FakeApi.md#fake_health_get) | **GET** /fake/health | Health check endpoint
 [**mammal**](FakeApi.md#mammal) | **POST** /fake/refs/mammal | 
 [**number_with_validations**](FakeApi.md#number_with_validations) | **POST** /fake/refs/number | 
@@ -346,6 +347,84 @@ No authorization required
 
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
+# **enum_test**
+> EnumTest enum_test()
+
+Object contains enum properties and array properties containing enums
+
+### Example
+
+```python
+import time
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.enum_test import EnumTest
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient() as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+    enum_test = EnumTest(
+        enum_string="UPPER",
+        enum_string_required="UPPER",
+        enum_integer=1,
+        enum_number=1.1,
+        string_enum=StringEnum("placed"),
+        integer_enum=IntegerEnum(0),
+        string_enum_with_default_value=StringEnumWithDefaultValue("placed"),
+        integer_enum_with_default_value=IntegerEnumWithDefaultValue(0),
+        integer_enum_one_value=IntegerEnumOneValue(0),
+        inline_array_of_str_enum=[
+            StringEnum("placed"),
+        ],
+        array_of_str_enum=ArrayOfEnums([
+            StringEnum("placed"),
+        ]),
+    ) # EnumTest | Input object (optional)
+
+    # example passing only required values which don't have defaults set
+    # and optional values
+    try:
+        # Object contains enum properties and array properties containing enums
+        api_response = api_instance.enum_test(enum_test=enum_test)
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->enum_test: %s\n" % e)
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **enum_test** | [**EnumTest**](EnumTest.md)| Input object | [optional]
+
+### Return type
+
+[**EnumTest**](EnumTest.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: application/json
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+**200** | Got object containing enums |  -  |
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
 # **fake_health_get**
 > HealthCheckResult fake_health_get()
 

samples/openapi3/client/petstore/python/petstore_api/api/fake_api.py

@@ -26,6 +26,7 @@ from petstore_api.model.animal_farm import AnimalFarm
 from petstore_api.model.array_of_enums import ArrayOfEnums
 from petstore_api.model.client import Client
 from petstore_api.model.composed_one_of_number_with_validations import ComposedOneOfNumberWithValidations
+from petstore_api.model.enum_test import EnumTest
 from petstore_api.model.file_schema_test_class import FileSchemaTestClass
 from petstore_api.model.health_check_result import HealthCheckResult
 from petstore_api.model.mammal import Mammal
@@ -605,6 +606,117 @@ class FakeApi(object):
             callable=__composed_one_of_number_with_validations
         )
 
+        def __enum_test(
+            self,
+            **kwargs
+        ):
+            """Object contains enum properties and array properties containing enums  # noqa: E501
+
+            This method makes a synchronous HTTP request by default. To make an
+            asynchronous HTTP request, please pass async_req=True
+
+            >>> thread = api.enum_test(async_req=True)
+            >>> result = thread.get()
+
+
+            Keyword Args:
+                enum_test (EnumTest): Input object. [optional]
+                _return_http_data_only (bool): response data without head status
+                    code and headers. Default is True.
+                _preload_content (bool): if False, the urllib3.HTTPResponse object
+                    will be returned without reading/decoding response data.
+                    Default is True.
+                _request_timeout (float/tuple): timeout setting for this request. If one
+                    number provided, it will be total request timeout. It can also
+                    be a pair (tuple) of (connection, read) timeouts.
+                    Default is None.
+                _check_input_type (bool): specifies if type checking
+                    should be done one the data sent to the server.
+                    Default is True.
+                _check_return_type (bool): specifies if type checking
+                    should be done one the data received from the server.
+                    Default is True.
+                _host_index (int/None): specifies the index of the server
+                    that we want to use.
+                    Default is read from the configuration.
+                async_req (bool): execute request asynchronously
+
+            Returns:
+                EnumTest
+                    If the method is called asynchronously, returns the request
+                    thread.
+            """
+            kwargs['async_req'] = kwargs.get(
+                'async_req', False
+            )
+            kwargs['_return_http_data_only'] = kwargs.get(
+                '_return_http_data_only', True
+            )
+            kwargs['_preload_content'] = kwargs.get(
+                '_preload_content', True
+            )
+            kwargs['_request_timeout'] = kwargs.get(
+                '_request_timeout', None
+            )
+            kwargs['_check_input_type'] = kwargs.get(
+                '_check_input_type', True
+            )
+            kwargs['_check_return_type'] = kwargs.get(
+                '_check_return_type', True
+            )
+            kwargs['_host_index'] = kwargs.get('_host_index')
+            return self.call_with_http_info(**kwargs)
+
+        self.enum_test = Endpoint(
+            settings={
+                'response_type': (EnumTest,),
+                'auth': [],
+                'endpoint_path': '/fake/refs/enum-test',
+                'operation_id': 'enum_test',
+                'http_method': 'POST',
+                'servers': None,
+            },
+            params_map={
+                'all': [
+                    'enum_test',
+                ],
+                'required': [],
+                'nullable': [
+                ],
+                'enum': [
+                ],
+                'validation': [
+                ]
+            },
+            root_map={
+                'validations': {
+                },
+                'allowed_values': {
+                },
+                'openapi_types': {
+                    'enum_test':
+                        (EnumTest,),
+                },
+                'attribute_map': {
+                },
+                'location_map': {
+                    'enum_test': 'body',
+                },
+                'collection_format_map': {
+                }
+            },
+            headers_map={
+                'accept': [
+                    'application/json'
+                ],
+                'content_type': [
+                    'application/json'
+                ]
+            },
+            api_client=api_client,
+            callable=__enum_test
+        )
+
         def __fake_health_get(
             self,
             **kwargs

samples/openapi3/client/petstore/python/petstore_api/model/enum_test.py

@@ -29,11 +29,13 @@ from petstore_api.model_utils import (  # noqa: F401
 )
 
 def lazy_import():
+    from petstore_api.model.array_of_enums import ArrayOfEnums
     from petstore_api.model.integer_enum import IntegerEnum
     from petstore_api.model.integer_enum_one_value import IntegerEnumOneValue
     from petstore_api.model.integer_enum_with_default_value import IntegerEnumWithDefaultValue
     from petstore_api.model.string_enum import StringEnum
     from petstore_api.model.string_enum_with_default_value import StringEnumWithDefaultValue
+    globals()['ArrayOfEnums'] = ArrayOfEnums
     globals()['IntegerEnum'] = IntegerEnum
     globals()['IntegerEnumOneValue'] = IntegerEnumOneValue
     globals()['IntegerEnumWithDefaultValue'] = IntegerEnumWithDefaultValue
@@ -114,6 +116,8 @@ class EnumTest(ModelNormal):
             'string_enum_with_default_value': (StringEnumWithDefaultValue,),  # noqa: E501
             'integer_enum_with_default_value': (IntegerEnumWithDefaultValue,),  # noqa: E501
             'integer_enum_one_value': (IntegerEnumOneValue,),  # noqa: E501
+            'inline_array_of_str_enum': ([StringEnum],),  # noqa: E501
+            'array_of_str_enum': (ArrayOfEnums,),  # noqa: E501
         }
 
     @cached_property
@@ -131,6 +135,8 @@ class EnumTest(ModelNormal):
         'string_enum_with_default_value': 'StringEnumWithDefaultValue',  # noqa: E501
         'integer_enum_with_default_value': 'IntegerEnumWithDefaultValue',  # noqa: E501
         'integer_enum_one_value': 'IntegerEnumOneValue',  # noqa: E501
+        'inline_array_of_str_enum': 'InlineArrayOfStrEnum',  # noqa: E501
+        'array_of_str_enum': 'ArrayOfStrEnum',  # noqa: E501
     }
 
     _composed_schemas = {}
@@ -190,6 +196,8 @@ class EnumTest(ModelNormal):
             string_enum_with_default_value (StringEnumWithDefaultValue): [optional]  # noqa: E501
             integer_enum_with_default_value (IntegerEnumWithDefaultValue): [optional]  # noqa: E501
             integer_enum_one_value (IntegerEnumOneValue): [optional]  # noqa: E501
+            inline_array_of_str_enum ([StringEnum]): [optional]  # noqa: E501
+            array_of_str_enum (ArrayOfEnums): [optional]  # noqa: E501
         """
 
         _check_type = kwargs.pop('_check_type', True)

samples/openapi3/client/petstore/python/petstore_api/model_utils.py

@@ -1493,10 +1493,13 @@ def model_to_dict(model_instance, serialize=True):
                 # exist in attribute_map
                 attr = model_instance.attribute_map.get(attr, attr)
             if isinstance(value, list):
-                result[attr] = list(map(
-                    lambda x: model_to_dict(x, serialize=serialize)
-                    if hasattr(x, '_data_store') else x, value
-                ))
+                if not value or isinstance(value[0], PRIMITIVE_TYPES):
+                    # empty list or primitive types
+                    result[attr] = value
+                elif isinstance(value[0], ModelSimple):
+                    result[attr] = [x.value for x in value]
+                else:
+                    result[attr] = [model_to_dict(x, serialize=serialize) for x in value]
             elif isinstance(value, dict):
                 result[attr] = dict(map(
                     lambda item: (item[0],

samples/openapi3/client/petstore/python/tests_manual/test_enum_test.py

@@ -0,0 +1,46 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.enum_test import EnumTest
+from petstore_api.model.string_enum import StringEnum
+from petstore_api.model.array_of_enums import ArrayOfEnums
+
+
+class TestEnumTest(unittest.TestCase):
+    """EnumTest unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testEnumTest(self):
+        """Test EnumTest"""
+        # inline array of enums
+        model = EnumTest(
+            enum_string_required='lower',
+            inline_array_of_str_enum=[StringEnum('approved')]
+        )
+        # refed array of enums
+        model = EnumTest(
+            enum_string_required='lower',
+            array_of_str_enum=ArrayOfEnums([StringEnum('approved')])
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()

samples/openapi3/client/petstore/python/tests_manual/test_fake_api.py

@@ -119,6 +119,52 @@ class TestFakeApi(unittest.TestCase):
         """
         pass
 
+    def test_enum_test(self):
+        """Test case for enum_test
+
+        Object contains enum properties and array properties containing enums
+        """
+        from petstore_api.model.enum_test import EnumTest
+        from petstore_api.model.string_enum import StringEnum
+        from petstore_api.model.array_of_enums import ArrayOfEnums
+
+        endpoint = self.api.enum_test
+        assert endpoint.openapi_types['enum_test'] == (EnumTest,)
+        assert endpoint.settings['response_type'] == (EnumTest,)
+
+        # serialization + deserialization works w/ inline array
+        with patch.object(RESTClientObject, 'request') as mock_method:
+            body = EnumTest(
+                enum_string_required='lower',
+                inline_array_of_str_enum=[StringEnum('approved')]
+            )
+            json_value = {'enum_string_required': 'lower', 'InlineArrayOfStrEnum': ['approved']}
+            mock_method.return_value = self.mock_response(json_value)
+
+            response = endpoint(enum_test=body)
+            self.assert_request_called_with(
+                mock_method, 'http://petstore.swagger.io:80/v2/fake/refs/enum-test', json_value)
+
+            assert isinstance(response, EnumTest)
+            assert response == body
+
+        # serialization + deserialization works w/ refed array
+        with patch.object(RESTClientObject, 'request') as mock_method:
+            body = EnumTest(
+                enum_string_required='lower',
+                array_of_str_enum=ArrayOfEnums([StringEnum('approved')])
+            )
+            json_value = {'enum_string_required': 'lower', 'ArrayOfStrEnum': ['approved']}
+            mock_method.return_value = self.mock_response(json_value)
+
+            response = endpoint(enum_test=body)
+            self.assert_request_called_with(
+                mock_method, 'http://petstore.swagger.io:80/v2/fake/refs/enum-test', json_value)
+
+            assert isinstance(response, EnumTest)
+            assert response == body
+
+
     def test_array_of_enums(self):
         """Test case for array_of_enums