This PR was squashed before being merged into the 3.x branch.
Discussion
----------
Create attributes `AsTwigFilter`, `AsTwigFunction` and `AsTwigTest` to ease extension development
One drawback to writing extensions at present is that the declaration of functions/filters/tests is not directly adjacent to the methods. It's worse for runtime extensions because they need to be in 2 different classes. See [`SerializerExtension`](https://github.com/symfony/symfony/blob/7.0/src/Symfony/Bridge/Twig/Extension/SerializerExtension.php) and [`SerializerRuntime`](https://github.com/symfony/symfony/blob/7.0/src/Symfony/Bridge/Twig/Extension/SerializerRuntime.php) as an example.
By using attributes for filters, functions and tests definition, we can make writing extensions more expressive, and use reflection to detect particular options (`needs_environment`, `needs_context`, `is_variadic`).
Example if we implemented the `formatDate` filter: https://github.com/twigphp/Twig/blob/aeeec9a5e907a79e50a6bb78979154599401726e/extra/intl-extra/IntlExtension.php#L392-L395
By using the `AsTwigFilter` attribute, it is not necessary to create the `getFilters()` method. The `needs_environment` option is detected from method signature. The name is still required as the method naming convention (camelCase) doesn't match with Twig naming convention (snake_case).
```php
use Twig\Extension\Attribute\AsTwigFilter;
class IntlExtension
{
#[AsTwigFilter(name: 'format_date')]
public function formatDate(Environment $env, $date, ?string $dateFormat = 'medium', string $pattern = '', $timezone = null, string $calendar = 'gregorian', string $locale = null): string
{
return $this->formatDateTime($env, $date, $dateFormat, 'none', $pattern, $timezone, $calendar, $locale);
}
}
```
This approach does not totally replace the current definition of extensions, which is still necessary for advanced needs. It does, however, make for more pleasant reading and writing.
This makes writing lazy-loaded runtime extension the easiest way to create Twig extension in Symfony: https://github.com/symfony/symfony/pull/52748
Related to https://github.com/symfony/symfony/issues/50016
Is there any need to cache the parsing of method attributes? They are only read at compile time, but that can have a performance impact during development or when using dynamic templates.
Commits
-------
5886907b28 Create attributes `AsTwigFilter`, `AsTwigFunction` and `AsTwigTest` to ease extension development
This PR was squashed before being merged into the 3.x branch.
Discussion
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Fix timezone conversion on strings
When setting a default application timezone, and a display timezone:
```php
date_default_timezone_set('UTC');
$twig->getExtension(\Twig\Extension\CoreExtension::class)->setTimezone('Europe/Paris');
```
Date objects get converted, but strings don't. See #4545.
For most other paths in `convertDate`, the dateTime object is initialized, and afterwards the timezone gets set. For strings, the timezone is passed as a constructor argument before having the timezone set again, losing its converting behaviour. This makes the convertDate method work identical for DateTime objects as strings. This different behaviour was already spotted in #3568.
Fixes#4545#3568#2819
Commits
-------
f69531fa00 Fix timezone conversion on strings
HypeMC
Fabien Potencier
Felds Liscia
Younes ENNAJI
Thomas Cochard
Nicolas Grekas
Simon André
Vincent Langlet
Jérôme Tamarelle
Christophe Coevoet
PrinsFrank