fix(explorer): normalize folder path

antarest/study/model.py

@@ -16,7 +16,7 @@
 import typing as t
 import uuid
 from datetime import datetime, timedelta
-from pathlib import Path, PurePath
+from pathlib import Path, PurePath, PurePosixPath
 
 from antares.study.version import StudyVersion
 from pydantic import BeforeValidator, ConfigDict, Field, PlainSerializer, computed_field, field_validator
@@ -358,7 +358,7 @@ class NonStudyFolderDTO(AntaresBaseModel):
     so the user can navigate in the hierarchy
     """
 
-    path: Path
+    path: PurePosixPath
     workspace: str
     name: str
     has_children: bool = Field(
@@ -368,18 +368,25 @@ class NonStudyFolderDTO(AntaresBaseModel):
     model_config = ConfigDict(populate_by_name=True)
 
     @computed_field(alias="parentPath")
-    def parent_path(self) -> Path:
+    def parent_path(self) -> PurePosixPath:
         """
         This computed field is convenient for the front.
 
         This field is also aliased as parentPath to match the front-end naming convention.
 
         Returns: the parent path of the current directory. Starting with the workspace as a root directory (we want /workspafe/folder1/sub... and not workspace/folder1/fsub... ).
         """
-        workspace_path = Path(f"/{self.workspace}")
+        workspace_path = PurePosixPath(f"/{self.workspace}")
         full_path = workspace_path.joinpath(self.path)
         return full_path.parent
 
+    @field_validator("path", mode="before")
+    def to_posix(cls, path: Path) -> PurePosixPath:
+        """
+        Always convert path to posix path.
+        """
+        return PurePosixPath(path)
+
 
 class WorkspaceMetadata(AntaresBaseModel):
     """

antarest/study/storage/explorer_service.py

@@ -11,6 +11,7 @@
 # This file is part of the Antares project.
 
 import logging
+from pathlib import PurePosixPath
 from typing import List
 
 from antarest.core.config import Config
@@ -48,7 +49,7 @@ def list_dir(
                 try:
                     if is_non_study_folder(child, workspace.filter_in, workspace.filter_out):
                         # we don't want to expose the full absolute path on the server
-                        child_rel_path = child.relative_to(workspace.path)
+                        child_rel_path = PurePosixPath(child.relative_to(workspace.path))
                         has_children = has_non_study_folder(child, workspace.filter_in, workspace.filter_out)
                         directories.append(
                             NonStudyFolderDTO(