How to call a Twig function with the argument being another Twig function or filter?

Question

I've made a Twig Extension with some filters and need to call a function with the argument being another function or a filter but it does not output correctly, the argument gets outputed outside of the function call.

for instance:

        {% set clean_url = current_url|NoQuery %}
        {{ BeginPostForm(clean_url) }}

or

    {{ BeginPostForm(URL()) }}            

this outputs first the function argument and then the function output as if the default argument was passed. ( ie : /blog/welcome instead of &ltform action='/blog/welcome'&gt )

Thanks in advance.

Answer 1

我发现了错误，我在执行echo而不是在Twig_Extension函数上返回，这就是它表现不佳的原因。