php - How To Pass A Twig Output String Into the urlFor() Function -

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i pass id of category parameter using urlfor().

{% category in categories %} <br> <p><a href="{{urlfor('showtopic.post', {"cat_id": "{{category.id}}"})}}">{{category.category_title}}<a><br>{{category.category_description}}</p> <br> <br> {% endfor %}

this not work. passes in {{category.id}} instead of actual id category. have id each category in database. if try use {{category.category_title}}, know works because output title, same thing. help

try 

<a href="{{urlfor('showtopic.post', {"cat_id": category.id})}}">{{category.category_title}}<a>

you don't need surround category.id {{ , }} because in print mode


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