How to concatenate a field in a form with a var in Twig?

Question

I'm trying to work with a loop in a Controller (in Symfony4) to create a form, with different lines

for ($i=1 ; $i<=$nblig ; $i++) { $formBuilder ->add('date'.$i, DateType::class) -> (...) }

The form works fine (I can dump it). I need a similar loop, when I try to render that form with Twig :

{% for i in 1..nblig %} {{ form_widget(form.date ~ i)) }}{% endfor %}

And I don't know how to concatenate the field name date, with the var i.

Thanks for your help

DarkBee · Accepted Answer · 2019-03-11 05:14:01Z

You are now combining the value of form.date with i, what you want, you can use either the array notation or use attribute for

{{ form_widget(form['date' ~ i]) }}

{{ form_widget(attribute(form, 'date'~i)) }}

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