Twig - Template Engine

1use Twig\Environment;
2use Twig\Loader\FilesystemLoader;
3use Twig\Extension\AbstractExtension;
4use Twig\TwigFilter;
5use Twig\TwigFunction;
6 
7class TwigSetup
8{
9    public function createEnvironment(string $templatePath): Environment
10    {
11        $loader = new FilesystemLoader($templatePath);
12        $twig = new Environment($loader, [
13            'cache' => '/tmp/twig_cache',
14            'auto_reload' => true,
15            'strict_variables' => true
16        ]);
17 
18        $twig->addExtension(new CustomExtension());
19        return $twig;
20    }
21}
22 
23class CustomExtension extends AbstractExtension
24{
25    public function getFilters(): array
26    {
27        return [
28            new TwigFilter('price', [$this, 'formatPrice']),
29            new TwigFilter('truncate', [$this, 'truncateText'])
30        ];
31    }
32 
33    public function getFunctions(): array
34    {
35        return [
36            new TwigFunction('asset_url', [$this, 'getAssetUrl'])
37        ];
38    }
39 
40    public function formatPrice(float $value): string
41    {
42        return '$' . number_format($value, 2);
43    }
44 
45    public function truncateText(string $text, int $length): string
46    {
47        return mb_substr($text, 0, $length) . '...';
48    }
49 
50    public function getAssetUrl(string $path): string
51    {
52        return '/assets/' . ltrim($path, '/');
53    }
54}