This PR adds support for the optional chaining operator (?.) to Twig.

[shokhaa]

This PR adds support for the optional chaining operator (?.) to Twig.

The optional chaining operator (?.) enables developers to read the value of a property located deep within a chain of connected objects without having to check that each reference in the chain is valid.

Example usage:

{{ foo?.bar?.baz }}

This is equivalent to:

{{ foo.bar.baz is defined ? foo.bar.baz }}`

[shokhaa]

./vendor/bin/simple-phpunit tests/Extension/OptionalChainingTest.php

Testing Twig\Tests\Extension\OptionalChainingTest ......S 7 / 7 (100%)

Time: 00:00.036, Memory: 10.00 MB

[Bilge]

So we doing this or nah?

[ruudk]

@fabpot What do you think of this idea? Today I had again a situation where this would have helped tremendously by doing something like {% if app.user.account.id == some.other.id %} and account being null.

[ryanleichty]

I'm dying for optional chaining in twig 🥵