Laravel: List all existing app models.

list_models.php

<?php

if (! function_exists('list_models')) {
    /**
     * Return a list of existing app models.
     *
     * @return array
     */
    function list_models(): array
    {
        $path = app_path('Models');
        $files = \File::allFiles($path);

        return collect($files)
            ->map(fn ($name) => $name->getFilenameWithoutExtension())
            ->filter(fn ($name) => is_app_model($name))
            ->values()
            ->toArray();
    }
}

if (! function_exists('is_app_model')) {
    /**
     * Check if a given name is an existing app model.
     *
     * @return bool
     */
    function is_app_model(string $name): bool
    {
        return is_subclass_of(
            "\\App\\Models\\" . $name,
            \Illuminate\Database\Eloquent\Model::class
        );
    }
}