Files in acf-json should be group-writable

[joemaller]

When pulling changes, files in wp-content/themes/<theme>/acf-json often switch to 644 mode -rw-r--r-- . This causes a permission denied error when ACF tries to write updates to those files. Files should be 664 -rw-rw-r--

What exactly is causing those files to switch to 644?
Add group-write to umask?

Warning: file_put_contents(/var/www/html/wp-content/themes/iop-nrmp/acf-json/group_60de150bd0cd2.json): failed to open stream: Permission denied in /var/www/html/wp-content/plugins/advanced-custom-fields-pro/includes/local-json.php on line 223

[joemaller]

Some notes:

Files are being created by www-data with 0644 -rw-r--r-- permissions instead of 664 -rw-rw-r--.

This only seems to happen when creating the files from PHP.

Running this command from inside the container correctly creates an 0664 file (login user is root):

su - www-data -s /bin/bash -c 'touch /var/www/html/wp-content/themes/test-theme/acf-json/zzz.json'

Adding either of these code blocks to functions.php creates an 0644 perms file. Same result when creating a top-level PHP file outside of WordPress.

file_put_contents(
    __DIR__ . '/acf-json/' . time() . '.json',
    json_encode(['a' => 123])
);

$fp = fopen(__DIR__ . '/acf-json/' . time() . '.json', "w");
fputs ($fp, json_encode(['a' => 123]));
fclose ($fp);

Possibly an Apache config issue? Combined with Wordpress FS_METHOD constant?
https://wordpress.stackexchange.com/a/57089/71132

That seemed to do it!

• Add umask to Apache envvars
• Add define('FS_METHOD', 'direct'); to wp-config.php