[python] Fix unnamed dicts with additional properties (#16779)

* test: Add two extra models for testing

* Fix unnamed dicts with additional properties

Closes #16630

Author: robertschweizer

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

@@ -182,15 +182,17 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
         {{/isArray}}
         {{#isMap}}
         {{#items.isArray}}
+        {{^items.items.isPrimitiveType}}
         # override the default output from pydantic by calling `to_dict()` of each value in {{{name}}} (dict of array)
         _field_dict_of_array = {}
         if self.{{{name}}}:
             for _key in self.{{{name}}}:
-                if self.{{{name}}}[_key]:
+                if self.{{{name}}}[_key] is not None:
                     _field_dict_of_array[_key] = [
                         _item.to_dict() for _item in self.{{{name}}}[_key]
                     ]
             _dict['{{{baseName}}}'] = _field_dict_of_array
+        {{/items.items.isPrimitiveType}}
         {{/items.isArray}}
         {{^items.isArray}}
         {{^items.isPrimitiveType}}

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

@@ -2351,3 +2351,21 @@ components:
       title: ListOfObjects
       items:
         $ref: "#/components/schemas/Tag"
+    UnnamedDictWithAdditionalStringListProperties:
+      type: object
+      properties:
+        dictProperty:
+          type: object
+          additionalProperties:
+            type: array
+            items:
+              type: string
+    UnnamedDictWithAdditionalModelListProperties:
+      type: object
+      properties:
+        dictProperty:
+          type: object
+          additionalProperties:
+            type: array
+            items:
+              $ref: "#/components/schemas/CreatureInfo"

samples/openapi3/client/petstore/python-aiohttp/.openapi-generator/FILES

@@ -86,6 +86,8 @@ docs/StoreApi.md
 docs/Tag.md
 docs/TestInlineFreeformAdditionalPropertiesRequest.md
 docs/Tiger.md
+docs/UnnamedDictWithAdditionalModelListProperties.md
+docs/UnnamedDictWithAdditionalStringListProperties.md
 docs/User.md
 docs/UserApi.md
 docs/WithNestedOneOf.md
@@ -181,6 +183,8 @@ petstore_api/models/special_name.py
 petstore_api/models/tag.py
 petstore_api/models/test_inline_freeform_additional_properties_request.py
 petstore_api/models/tiger.py
+petstore_api/models/unnamed_dict_with_additional_model_list_properties.py
+petstore_api/models/unnamed_dict_with_additional_string_list_properties.py
 petstore_api/models/user.py
 petstore_api/models/with_nested_one_of.py
 petstore_api/py.typed

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

@@ -212,6 +212,8 @@ Class | Method | HTTP request | Description
  - [Tag](docs/Tag.md)
  - [TestInlineFreeformAdditionalPropertiesRequest](docs/TestInlineFreeformAdditionalPropertiesRequest.md)
  - [Tiger](docs/Tiger.md)
+ - [UnnamedDictWithAdditionalModelListProperties](docs/UnnamedDictWithAdditionalModelListProperties.md)
+ - [UnnamedDictWithAdditionalStringListProperties](docs/UnnamedDictWithAdditionalStringListProperties.md)
  - [User](docs/User.md)
  - [WithNestedOneOf](docs/WithNestedOneOf.md)
 

samples/openapi3/client/petstore/python-aiohttp/docs/UnnamedDictWithAdditionalModelListProperties.md

@@ -0,0 +1,28 @@
+# UnnamedDictWithAdditionalModelListProperties
+
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**dict_property** | **Dict[str, List[CreatureInfo]]** |  | [optional] 
+
+## Example
+
+```python
+from petstore_api.models.unnamed_dict_with_additional_model_list_properties import UnnamedDictWithAdditionalModelListProperties
+
+# TODO update the JSON string below
+json = "{}"
+# create an instance of UnnamedDictWithAdditionalModelListProperties from a JSON string
+unnamed_dict_with_additional_model_list_properties_instance = UnnamedDictWithAdditionalModelListProperties.from_json(json)
+# print the JSON string representation of the object
+print UnnamedDictWithAdditionalModelListProperties.to_json()
+
+# convert the object into a dict
+unnamed_dict_with_additional_model_list_properties_dict = unnamed_dict_with_additional_model_list_properties_instance.to_dict()
+# create an instance of UnnamedDictWithAdditionalModelListProperties from a dict
+unnamed_dict_with_additional_model_list_properties_form_dict = unnamed_dict_with_additional_model_list_properties.from_dict(unnamed_dict_with_additional_model_list_properties_dict)
+```
+[[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-aiohttp/docs/UnnamedDictWithAdditionalStringListProperties.md

@@ -0,0 +1,28 @@
+# UnnamedDictWithAdditionalStringListProperties
+
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**dict_property** | **Dict[str, List[str]]** |  | [optional] 
+
+## Example
+
+```python
+from petstore_api.models.unnamed_dict_with_additional_string_list_properties import UnnamedDictWithAdditionalStringListProperties
+
+# TODO update the JSON string below
+json = "{}"
+# create an instance of UnnamedDictWithAdditionalStringListProperties from a JSON string
+unnamed_dict_with_additional_string_list_properties_instance = UnnamedDictWithAdditionalStringListProperties.from_json(json)
+# print the JSON string representation of the object
+print UnnamedDictWithAdditionalStringListProperties.to_json()
+
+# convert the object into a dict
+unnamed_dict_with_additional_string_list_properties_dict = unnamed_dict_with_additional_string_list_properties_instance.to_dict()
+# create an instance of UnnamedDictWithAdditionalStringListProperties from a dict
+unnamed_dict_with_additional_string_list_properties_form_dict = unnamed_dict_with_additional_string_list_properties.from_dict(unnamed_dict_with_additional_string_list_properties_dict)
+```
+[[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-aiohttp/petstore_api/__init__.py

@@ -115,5 +115,7 @@
 from petstore_api.models.tag import Tag
 from petstore_api.models.test_inline_freeform_additional_properties_request import TestInlineFreeformAdditionalPropertiesRequest
 from petstore_api.models.tiger import Tiger
+from petstore_api.models.unnamed_dict_with_additional_model_list_properties import UnnamedDictWithAdditionalModelListProperties
+from petstore_api.models.unnamed_dict_with_additional_string_list_properties import UnnamedDictWithAdditionalStringListProperties
 from petstore_api.models.user import User
 from petstore_api.models.with_nested_one_of import WithNestedOneOf

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/__init__.py

@@ -91,5 +91,7 @@
 from petstore_api.models.tag import Tag
 from petstore_api.models.test_inline_freeform_additional_properties_request import TestInlineFreeformAdditionalPropertiesRequest
 from petstore_api.models.tiger import Tiger
+from petstore_api.models.unnamed_dict_with_additional_model_list_properties import UnnamedDictWithAdditionalModelListProperties
+from petstore_api.models.unnamed_dict_with_additional_string_list_properties import UnnamedDictWithAdditionalStringListProperties
 from petstore_api.models.user import User
 from petstore_api.models.with_nested_one_of import WithNestedOneOf

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/map_of_array_of_model.py

@@ -75,7 +75,7 @@ def to_dict(self) -> Dict[str, Any]:
         _field_dict_of_array = {}
         if self.shop_id_to_org_online_lip_map:
             for _key in self.shop_id_to_org_online_lip_map:
-                if self.shop_id_to_org_online_lip_map[_key]:
+                if self.shop_id_to_org_online_lip_map[_key] is not None:
                     _field_dict_of_array[_key] = [
                         _item.to_dict() for _item in self.shop_id_to_org_online_lip_map[_key]
                     ]

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/unnamed_dict_with_additional_model_list_properties.py

@@ -0,0 +1,96 @@
+# 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: \" \\
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+    Do not edit the class manually.
+"""  # noqa: E501
+
+
+from __future__ import annotations
+import pprint
+import re  # noqa: F401
+import json
+
+
+from typing import Dict, List, Optional
+from pydantic import BaseModel
+from pydantic import Field
+from petstore_api.models.creature_info import CreatureInfo
+from typing import Dict, Any
+try:
+    from typing import Self
+except ImportError:
+    from typing_extensions import Self
+
+class UnnamedDictWithAdditionalModelListProperties(BaseModel):
+    """
+    UnnamedDictWithAdditionalModelListProperties
+    """
+    dict_property: Optional[Dict[str, List[CreatureInfo]]] = Field(default=None, alias="dictProperty")
+    __properties: ClassVar[List[str]] = ["dictProperty"]
+
+    model_config = {
+        "populate_by_name": True,
+        "validate_assignment": True
+    }
+
+
+    def to_str(self) -> str:
+        """Returns the string representation of the model using alias"""
+        return pprint.pformat(self.model_dump(by_alias=True))
+
+    def to_json(self) -> str:
+        """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
+        return json.dumps(self.to_dict())
+
+    @classmethod
+    def from_json(cls, json_str: str) -> Self:
+        """Create an instance of UnnamedDictWithAdditionalModelListProperties from a JSON string"""
+        return cls.from_dict(json.loads(json_str))
+
+    def to_dict(self):
+        """Returns the dictionary representation of the model using alias"""
+        _dict = self.model_dump(by_alias=True,
+                          exclude={
+                          },
+                          exclude_none=True)
+        # override the default output from pydantic by calling `to_dict()` of each value in dict_property (dict of array)
+        _field_dict_of_array = {}
+        if self.dict_property:
+            for _key in self.dict_property:
+                if self.dict_property[_key] is not None:
+                    _field_dict_of_array[_key] = [
+                        _item.to_dict() for _item in self.dict_property[_key]
+                    ]
+            _dict['dictProperty'] = _field_dict_of_array
+        return _dict
+
+    @classmethod
+    def from_dict(cls, obj: dict) -> Self:
+        """Create an instance of UnnamedDictWithAdditionalModelListProperties from a dict"""
+        if obj is None:
+            return None
+
+        if not isinstance(obj, dict):
+            return cls.model_validate(obj)
+
+        _obj = cls.model_validate({
+            "dictProperty": dict(
+                (_k,
+                        [CreatureInfo.from_dict(_item) for _item in _v]
+                        if _v is not None
+                        else None
+                )
+                for _k, _v in obj.get("dictProperty").items()
+            )
+        })
+        return _obj
+
+