fix: Fix multipart body file array

end_to_end_tests/baseline_openapi_3.0.json

@@ -476,6 +476,55 @@
         }
       }
     },
+    "/tests/upload/multiple-files-in-object": {
+      "post": {
+        "tags": [
+          "tests"
+        ],
+        "summary": "Array of files in object",
+        "description": "Upload an array of files as part of an object",
+        "operationId": "upload_array_of_files_in_object_tests_upload_post",
+        "parameters": [],
+        "requestBody": {
+          "content": {
+            "multipart/form-data": {
+              "schema": {
+                "type" : "object",
+                "files" : {
+                  "type" : "array",
+                  "items" : {
+                    "type" : "string",
+                    "description" : "attachments content",
+                    "format" : "binary"
+                  }
+                }
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {}
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/HTTPValidationError"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/tests/json_body": {
       "post": {
         "tags": [

end_to_end_tests/baseline_openapi_3.1.yaml

@@ -463,6 +463,55 @@ info:
       }
     }
   },
+  "/tests/upload/multiple-files-in-object": {
+    "post": {
+      "tags": [
+        "tests"
+      ],
+      "summary": "Array of files in object",
+      "description": "Upload an array of files as part of an object",
+      "operationId": "upload_array_of_files_in_object_tests_upload_post",
+      "parameters": [ ],
+      "requestBody": {
+        "content": {
+          "multipart/form-data": {
+            "schema": {
+              "type": "object",
+              "files": {
+                "type": "array",
+                "items": {
+                  "type": "string",
+                  "description": "attachments content",
+                  "format": "binary"
+                }
+              }
+            }
+          }
+        },
+        "required": true
+      },
+      "responses": {
+        "200": {
+          "description": "Successful Response",
+          "content": {
+            "application/json": {
+              "schema": { }
+            }
+          }
+        },
+        "422": {
+          "description": "Validation Error",
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/HTTPValidationError"
+              }
+            }
+          }
+        }
+      }
+    }
+  },
   "/tests/json_body": {
     "post": {
       "tags": [

end_to_end_tests/custom-templates-golden-record/my_test_api_client/api/tests/__init__.py

@@ -20,6 +20,7 @@
     test_inline_objects,
     token_with_cookie_auth_token_with_cookie_get,
     unsupported_content_tests_unsupported_content_get,
+    upload_array_of_files_in_object_tests_upload_post,
     upload_file_tests_upload_post,
     upload_multiple_files_tests_upload_post,
 )
@@ -89,6 +90,13 @@ def upload_multiple_files_tests_upload_post(cls) -> types.ModuleType:
         """
         return upload_multiple_files_tests_upload_post
 
+    @classmethod
+    def upload_array_of_files_in_object_tests_upload_post(cls) -> types.ModuleType:
+        """
+        Upload an array of files as part of an object
+        """
+        return upload_array_of_files_in_object_tests_upload_post
+
     @classmethod
     def json_body_tests_json_body_post(cls) -> types.ModuleType:
         """

end_to_end_tests/golden-record/my_test_api_client/models/__init__.py

@@ -87,6 +87,7 @@
 )
 from .test_inline_objects_body import TestInlineObjectsBody
 from .test_inline_objects_response_200 import TestInlineObjectsResponse200
+from .upload_array_of_files_in_object_tests_upload_post_body import UploadArrayOfFilesInObjectTestsUploadPostBody
 from .validation_error import ValidationError
 
 __all__ = (
@@ -167,5 +168,6 @@
     "PostResponsesUnionsSimpleBeforeComplexResponse200AType1",
     "TestInlineObjectsBody",
     "TestInlineObjectsResponse200",
+    "UploadArrayOfFilesInObjectTestsUploadPostBody",
     "ValidationError",
 )

end_to_end_tests/golden-record/my_test_api_client/models/a_model.py

@@ -206,6 +206,7 @@ def to_dict(self) -> dict[str, Any]:
             not_required_nullable_model = self.not_required_nullable_model
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update(
             {
                 "an_enum_value": an_enum_value,

end_to_end_tests/golden-record/my_test_api_client/models/body_upload_file_tests_upload_post.py

@@ -136,6 +136,7 @@ def to_dict(self) -> dict[str, Any]:
         field_dict: dict[str, Any] = {}
         for prop_name, prop in self.additional_properties.items():
             field_dict[prop_name] = prop.to_dict()
+
         field_dict.update(
             {
                 "some_file": some_file,
@@ -167,44 +168,59 @@ def to_dict(self) -> dict[str, Any]:
 
         return field_dict
 
-    def to_multipart(self) -> dict[str, Any]:
+    def to_multipart(self) -> list[tuple[str, Any]]:
+        field_list: list[tuple[str, Any]] = []
         some_file = self.some_file.to_tuple()
 
+        field_list.append(("some_file", some_file))
         some_required_number = (None, str(self.some_required_number).encode(), "text/plain")
 
+        field_list.append(("some_required_number", some_required_number))
         some_object = (None, json.dumps(self.some_object.to_dict()).encode(), "application/json")
 
+        field_list.append(("some_object", some_object))
         some_nullable_object: tuple[None, bytes, str]
 
         if isinstance(self.some_nullable_object, BodyUploadFileTestsUploadPostSomeNullableObject):
             some_nullable_object = (None, json.dumps(self.some_nullable_object.to_dict()).encode(), "application/json")
         else:
             some_nullable_object = (None, str(self.some_nullable_object).encode(), "text/plain")
 
+        field_list.append(("some_nullable_object", some_nullable_object))
         some_optional_file: Union[Unset, FileJsonType] = UNSET
         if not isinstance(self.some_optional_file, Unset):
             some_optional_file = self.some_optional_file.to_tuple()
 
+        if some_optional_file is not UNSET:
+            field_list.append(("some_optional_file", some_optional_file))
         some_string = (
             self.some_string
             if isinstance(self.some_string, Unset)
             else (None, str(self.some_string).encode(), "text/plain")
         )
 
+        if some_string is not UNSET:
+            field_list.append(("some_string", some_string))
         a_datetime: Union[Unset, bytes] = UNSET
         if not isinstance(self.a_datetime, Unset):
             a_datetime = self.a_datetime.isoformat().encode()
 
+        if a_datetime is not UNSET:
+            field_list.append(("a_datetime", a_datetime))
         a_date: Union[Unset, bytes] = UNSET
         if not isinstance(self.a_date, Unset):
             a_date = self.a_date.isoformat().encode()
 
+        if a_date is not UNSET:
+            field_list.append(("a_date", a_date))
         some_number = (
             self.some_number
             if isinstance(self.some_number, Unset)
             else (None, str(self.some_number).encode(), "text/plain")
         )
 
+        if some_number is not UNSET:
+            field_list.append(("some_number", some_number))
         some_nullable_number: Union[Unset, tuple[None, bytes, str]]
 
         if isinstance(self.some_nullable_number, Unset):
@@ -214,14 +230,17 @@ def to_multipart(self) -> dict[str, Any]:
         else:
             some_nullable_number = (None, str(self.some_nullable_number).encode(), "text/plain")
 
-        some_int_array: Union[Unset, tuple[None, bytes, str]] = UNSET
-        if not isinstance(self.some_int_array, Unset):
-            _temp_some_int_array = []
-            for some_int_array_item_data in self.some_int_array:
-                some_int_array_item: Union[None, int]
-                some_int_array_item = some_int_array_item_data
-                _temp_some_int_array.append(some_int_array_item)
-            some_int_array = (None, json.dumps(_temp_some_int_array).encode(), "application/json")
+        if some_nullable_number is not UNSET:
+            field_list.append(("some_nullable_number", some_nullable_number))
+        for some_int_array_element in self.some_int_array or []:
+            some_int_array_item: tuple[None, bytes, str]
+
+            if isinstance(some_int_array_element, int):
+                some_int_array_item = (None, str(some_int_array_element).encode(), "text/plain")
+            else:
+                some_int_array_item = (None, str(some_int_array_element).encode(), "text/plain")
+
+            field_list.append(("some_int_array", some_int_array_item))
 
         some_array: Union[Unset, tuple[None, bytes, str]]
 
@@ -236,47 +255,28 @@ def to_multipart(self) -> dict[str, Any]:
         else:
             some_array = (None, str(self.some_array).encode(), "text/plain")
 
+        if some_array is not UNSET:
+            field_list.append(("some_array", some_array))
         some_optional_object: Union[Unset, tuple[None, bytes, str]] = UNSET
         if not isinstance(self.some_optional_object, Unset):
             some_optional_object = (None, json.dumps(self.some_optional_object.to_dict()).encode(), "application/json")
 
+        if some_optional_object is not UNSET:
+            field_list.append(("some_optional_object", some_optional_object))
         some_enum: Union[Unset, tuple[None, bytes, str]] = UNSET
         if not isinstance(self.some_enum, Unset):
             some_enum = (None, str(self.some_enum.value).encode(), "text/plain")
 
+        if some_enum is not UNSET:
+            field_list.append(("some_enum", some_enum))
+
         field_dict: dict[str, Any] = {}
         for prop_name, prop in self.additional_properties.items():
             field_dict[prop_name] = (None, json.dumps(prop.to_dict()).encode(), "application/json")
-        field_dict.update(
-            {
-                "some_file": some_file,
-                "some_required_number": some_required_number,
-                "some_object": some_object,
-                "some_nullable_object": some_nullable_object,
-            }
-        )
-        if some_optional_file is not UNSET:
-            field_dict["some_optional_file"] = some_optional_file
-        if some_string is not UNSET:
-            field_dict["some_string"] = some_string
-        if a_datetime is not UNSET:
-            field_dict["a_datetime"] = a_datetime
-        if a_date is not UNSET:
-            field_dict["a_date"] = a_date
-        if some_number is not UNSET:
-            field_dict["some_number"] = some_number
-        if some_nullable_number is not UNSET:
-            field_dict["some_nullable_number"] = some_nullable_number
-        if some_int_array is not UNSET:
-            field_dict["some_int_array"] = some_int_array
-        if some_array is not UNSET:
-            field_dict["some_array"] = some_array
-        if some_optional_object is not UNSET:
-            field_dict["some_optional_object"] = some_optional_object
-        if some_enum is not UNSET:
-            field_dict["some_enum"] = some_enum
 
-        return field_dict
+        field_list += list(field_dict.items())
+
+        return field_list
 
     @classmethod
     def from_dict(cls: type[T], src_dict: Mapping[str, Any]) -> T:

end_to_end_tests/golden-record/my_test_api_client/models/http_validation_error.py

@@ -30,6 +30,7 @@ def to_dict(self) -> dict[str, Any]:
                 detail.append(detail_item)
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update({})
         if detail is not UNSET:
             field_dict["detail"] = detail

end_to_end_tests/golden-record/my_test_api_client/models/model_with_additional_properties_inlined.py

@@ -33,6 +33,7 @@ def to_dict(self) -> dict[str, Any]:
         field_dict: dict[str, Any] = {}
         for prop_name, prop in self.additional_properties.items():
             field_dict[prop_name] = prop.to_dict()
+
         field_dict.update({})
         if a_number is not UNSET:
             field_dict["a_number"] = a_number

end_to_end_tests/golden-record/my_test_api_client/models/model_with_union_property.py

@@ -29,6 +29,7 @@ def to_dict(self) -> dict[str, Any]:
             a_property = self.a_property.value
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update({})
         if a_property is not UNSET:
             field_dict["a_property"] = a_property

end_to_end_tests/golden-record/my_test_api_client/models/model_with_union_property_inlined.py

@@ -34,6 +34,7 @@ def to_dict(self) -> dict[str, Any]:
             fruit = self.fruit.to_dict()
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update({})
         if fruit is not UNSET:
             field_dict["fruit"] = fruit

end_to_end_tests/golden-record/my_test_api_client/models/post_bodies_multiple_files_body.py

@@ -30,18 +30,20 @@ def to_dict(self) -> dict[str, Any]:
 
         return field_dict
 
-    def to_multipart(self) -> dict[str, Any]:
+    def to_multipart(self) -> list[tuple[str, Any]]:
+        field_list: list[tuple[str, Any]] = []
         a = self.a if isinstance(self.a, Unset) else (None, str(self.a).encode(), "text/plain")
 
+        if a is not UNSET:
+            field_list.append(("a", a))
+
         field_dict: dict[str, Any] = {}
         for prop_name, prop in self.additional_properties.items():
             field_dict[prop_name] = (None, str(prop).encode(), "text/plain")
 
-        field_dict.update({})
-        if a is not UNSET:
-            field_dict["a"] = a
+        field_list += list(field_dict.items())
 
-        return field_dict
+        return field_list
 
     @classmethod
     def from_dict(cls: type[T], src_dict: Mapping[str, Any]) -> T:

end_to_end_tests/golden-record/my_test_api_client/models/test_inline_objects_body.py

@@ -21,6 +21,7 @@ def to_dict(self) -> dict[str, Any]:
         a_property = self.a_property
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update({})
         if a_property is not UNSET:
             field_dict["a_property"] = a_property

end_to_end_tests/golden-record/my_test_api_client/models/test_inline_objects_response_200.py

@@ -21,6 +21,7 @@ def to_dict(self) -> dict[str, Any]:
         a_property = self.a_property
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update({})
         if a_property is not UNSET:
             field_dict["a_property"] = a_property

end_to_end_tests/golden-record/my_test_api_client/models/validation_error.py

@@ -27,6 +27,7 @@ def to_dict(self) -> dict[str, Any]:
         type_ = self.type_
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update(
             {
                 "loc": loc,

end_to_end_tests/literal-enums-golden-record/my_enum_api_client/models/a_model.py

@@ -52,6 +52,7 @@ def to_dict(self) -> dict[str, Any]:
                 nested_list_of_enums.append(nested_list_of_enums_item)
 
         field_dict: dict[str, Any] = {}
+
         field_dict.update(
             {
                 "an_enum_value": an_enum_value,