Passing variable value inside setcontent in bolt.cm

Question

I'm using a framework called bolt.cm. A simple framework based on silex. There is a twig function to get records of specific contenttype :

{% setcontent products = 'products' %}

To get record and order them by specific field :

{% setcontent products = 'products' orderby 'datepublish' %}

Above will fetch records ordered by datepublish field. Now, I wanted to pass the orderby field from GET parameter. I store the GET parameter in a global twig variable which passed from the controller, defined as sort_by variable.

{{ sort_by }}

Above will print sort_by value into html. In page : /products?sort_by=datepublish will set sort_by value as datepublish Now I'm going to combine this variable into setcontent function as described below :

{% setcontent products = 'products' orderby sort_by %}

Now I'm getting error :

An exception has been thrown during the compilation of a template ("Attribute "value" does not exist for Node "Twig_Node_Expression_Name".") in "products.twig".

My question is simply, how to make sort_by recognized as a value inside that function ? Please don't tell me to do :

{% if sort_by == 'datepublish' %}
  {% setcontent products = 'products' orderby 'datepublish' %}
{% elseif sort_by == 'another_field' %}
  {% setcontent products = 'products' orderby 'another_field' %}

{# and so on for every single field #}

{% endif %}

Answer 1

Which version of Bolt are you using? This should be possible since version 1.6. The release notes say:

You can now use variables in your {% setcontent %} tags, like this: {% setcontent mypages = 'pages' order my_var limit other_var %}.