Symfony2 / Twig dealing with getting URL query string values

You can use app.request.query.all to get your query strings.

If you want to change a param in Twig you can do this

{% set queryParams = app.request.query.all %}
{% set queryParams = queryParams|merge({queryKey: newQueryValue}) %}

To get the query string "https://stackoverflow.com?name=jazz"

{{ app.request.query.get('name') | default('default value if not set'); }}

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