Equivalent of is_array in Twig

Question

I'm working on a template and I need to check if something is an array. How do I do that in Twig?

I've tried

{% if my_var is iterable %}
  {% for v in my_var %}
      ...
  {% endfor %}
{% else %}
  {{ my_var }}
{% endif %}

but it always prints my_var, even when my_var is really an array, as evidenced when it prints out

Array
Array
myusername
../data/table.sqlite3

sorry 'bout my prev answer which I deleted... but you could engange in extending twig http://twig.sensiolabs.org/doc/advanced.html, you might find a way to create your own filter there. — DerStoffel, Oct 31 '13 at 08:45
possible duplicate of [Check if variable is string or array in Twig](http://stackoverflow.com/questions/13876023/check-if-variable-is-string-or-array-in-twig) — Potherca, Feb 20 '15 at 10:41

score 4 · Answer 1 · answered Oct 31 '13 at 09:13

4

Another way :

{% if my_var.count()>1 %}

answered Oct 31 '13 at 09:13

BENARD Patrick

1

Impossible to invoke a method ("count") on a string variable (""). – Stan Fad Apr 22 '17 at 17:11

score 4 · Answer 2 · answered Jul 25 '17 at 20:37

4

If you don't want to create a custom filter use iterable, as per the docs :

iterable checks if a variable is an array or a traversable object

{% if myVar is iterable %} ... {% endif %}

answered Jul 25 '17 at 20:37

Raja Khoury

score 3 · Answer 3 · answered Aug 07 '14 at 14:39

3

Just add a custom filter:

$twig->addFilter('is_array', new \Twig_Filter_Function('is_array'));

Then use it like this:

{% if my_var|is_array %}

answered Aug 07 '14 at 14:39

André Figueira

When using this method, you have to use it like this: $twig->addFilter('is_array', new \Twig_Filter_Function('is_array')); Or use {% is_array(my_var) %} – kendepelchin May 21 '15 at 08:54

3 Answers3