使用动态参数调用Twig函数

Question

I'm using Twig with Slim and their Twig-View view layer. This view layer has a function for creating URLs, which from the documentation looks like this:

{{ path_for('profile', { 'name': 'josh' }) }}

This works fine, but I have problems when the parameters are built with variables from dynamic data. For example this expression:

{{ path_for('profile', { 'name': '{{ PERSON.name }}' }) }}

Is simply evaluated as {{ PERSON.name }}. Twig does not parse the content of {{ PERSON.name }}, it just returns this as the value, so my URL looks something like /path/to/profile/{{ PERSON.name}}. If I move the expression outside my function call it is evaluated correctly.

I have looked at the attribute function, but can not figure out how to use this is my situation, as it seem more suited for calling functions dynamically on objects.

Answer 1

To use vars inside your twig expression, you don't have to use the {{.}} syntax. Just write the plain var and it should work.

{{ path_for('profile', { 'name': PERSON.name }) }}