How to concatenate two Twig variables in a loop

Question

I'm trying to create dynamically variable name so the result to be as the one below

{{ form_label(form.user_1) }}
 {{ form_label(form.user_2) }}
 {{ form_label(form.user_3) }}
 {{ form_label(form.user_4) }}

Here's what I tried so far

{%  for user in users %}
      {{ form_label(form.user~'_'~loop.index) }}
 {% endfor %}

but get

Argument 1 passed to Symfony\Component\Form\FormRenderer::searchAndRenderBlock() must be an instance of Symfony\Component\Form\FormView, string given

What I'm doing wrong?

MeuhMeuh · Accepted Answer · 2015-07-30 07:56:09Z

5

If this doesn't work with the concatenation in the method parameter, try to concatenate it first in a variable like this :

{% set userIndex = 'user_' ~ loop.index %}

And then you should try this :

{{ form_label(attribute(form, userIndex)) }}

answered Jul 30, 2015 at 7:56

MeuhMeuh

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1 Comment

When I do {{ form_label(attribute(form, 'user_1') }} it works but by using userIndex I get the error described in my post.