Path from environment

[thekid]

Scenario: I have a path for my app's content, which defaults to /path/to/webroot/content by default, but can be overridden via an environment variable:

$content= new Path($this->environment->variable('APP_CONTENT') ?? $this->environment->path('content'));

Small glitches here:

• We create an io.Path element when the environment variable is unset although Environment::path() already returns one
• We need an import of io.Path

Is there a more concise way of writing this?

[thekid]

Using the null-coalesce pipe operator:

$content= $this->environment->variable('APP_CONTENT') ?|> new Path(...) ?? $this->environment->path('content'));

This is in line with the following:

$flow= new OAuth2Flow(/* ... */);
$this->environment->variable('APP_URL') ?|> fn($env) => $flow->target(new UseURL($env));

[thekid]

If we restrict APP_CONTENT to relative paths, this will work, which I find quite clear:

$content= $this->environment->path($this->environment->variable('APP_CONTENT') ?? 'content');

This poses the question whether path() should support absolute paths: currently, calling e.g. path('/etc') will return a path inside the web root: $webroot/etc. However, this seems counter-intuitive!