Escape file name with slash

Drupal 9 is end-of-life and is not accepting bug reports. Please test for the bug on a supported release.

Should this issue be against views data export

The module writing the files is responsible for creating the folders

That was quick. Thank you for the replies.

larowlan: Thanks for suggesting a fix might be needed in Views data export. That module brought to light the problem creating subdirs, but the fix needed to be in Drupal core.

cilefen: Druapl 9 at end of life: Thanks. I built a patch for my drupal 9 version and will share. I also checked Drupal 10, the issues is still there, I would like to suggest adding a fix to one line in the core which is:

web/core/lib/Drupal/Core/File/FileSystem.php in function prepareDestination

Instead of calling prepareDirectory with 1 parameter, it should have 2, just like it's used in many other places from within Drupal, like this:

$this->prepareDirectory($dirname, self::CREATE_DIRECTORY | self::MODIFY_PERMISSIONS)

or at least like this:

$this->prepareDirectory($dirname, self::CREATE_DIRECTORY)

Thanks

That function doesn’t say it creates directories in its documentation.

Patch updated for version 10.2.3

I ran into the problem, and looked into the code.

Drupal Core has no problem. views_data_export module also correctly prepared the folder with subfolders on this line

$fileSystem = \Drupal::service('file_system');
$fileSystem->prepareDirectory($directory, FileSystemInterface::CREATE_DIRECTORY);
$destination = $directory . $filename;

The actual problem, at least in my case, was that my filename contains a date, which contains the slash /, which tricks Drupal core to think there are more subfolders.

I repurposed this issue that for this module, it can escape the slash in the filename, which can help users to get around this problem.