Question

There is a multilingual website built in Symfony2. In the base layout, there is language switch something like this:

<a href="{{ path(app.request.attributes.get('_route'), {_locale: 'en'}) }}">EN</a>
<a href="{{ path(app.request.attributes.get('_route'), {_locale: 'fr'}) }}">FR</a>

This works fine switching languages without changing the current page. However, if there are other parameters it throws an exception because of ‘missing mandatory parameters’. How to overcome this?

Answer 1

You could do something like :

<a href="{{ path(app.request.attributes.get('_route'), app.request.query.all|merge({'_locale': 'en'})) }}">EN</a>
<a href="{{ path(app.request.attributes.get('_route'), app.request.query.all|merge({'_locale': 'fr'})) }}">FR</a>

What this does is merge the _locale parameter with the existing query parameters.