How to asign environment variables to the volume's asset filesystem

[goraxan]

I'm sure this is dumb question but I've been trying to assign an environment variable to a volume's asset filesystem without luck

Whenever I try to put an environment variable, once I focus out the dropdown it gets erased

Should I set it in some config file? I've read that the config/volumes.php is no longer supported so I don't know how to do it.

Any ideas?

[brandonkelly]

The environment variable must already exist, and must be set to the handle of an existing filesystem.

[brandonkelly]

Enter it, prefixed with a $. If the environment variable already exists (and was added properly), it will show up in the autosuggest menu as you start typing it.

[goraxan]

Well... it's not showing up even though the FS_AVATARS variable is correctly set. I'm using Craft CMS 4.3.5 and PHP 8.1.6
This is me trying to set the variable in the dropdown
https://www.loom.com/share/e204e8527fa34c2cb3bcf4add5e3acb0

[brianjhanson]

How are you setting the environment variable? We filter out environment values that don't match over here. I'm wondering if there's something we're not accounting for in there.

[goraxan]

I see... you are reading from $_SERVER, which looks like it doesn't return the .env file variables (which is where I set the variable). Looks like it only returns PHP system variables
dump(array_keys($_SERVER)):

While getenv does return the full list of variables.
dump(array_keys(getenv())):

[goraxan]

Ok more information... I was serving craft using the php craft serve command .
If I start the PHP built-in server by using the php -S 0.0.0.0:8080 in the index.php folder, the $_SERVER variable gets populated with the .env variables. That's weird, isn't it?
dump(array_keys($_SERVER)):

[goraxan]

Ok... for those who might have the same problem, my problem was caused because of how Dotenv is initialized in the craft starter project I'm using (https://github.com/CreateSean/craft-starter).
I've solved it by changing both the craft and index.php files from
Dotenv\Dotenv::create(CRAFT_BASE_PATH)->load();
to
Dotenv\Dotenv::create(CRAFT_BASE_PATH)->overload();
Related with #3993 (comment)

[brandonkelly]

Looks like that starter is still using PHP Dotenv v3: https://github.com/CreateSean/craft-starter/blob/master/composer.json#L32

I’d recommend you update that to v5 (^5.5.0), and then change this line in your craft executable and public/index.php files:

Dotenv\Dotenv::create(CRAFT_BASE_PATH)->load();

to:

Dotenv\Dotenv::createUnsafeMutable(CRAFT_BASE_PATH)->safeLoad();