Getting array keys in Twig? (Symfony)

Question

Is it possible to get the key of an array in Twig (in Symfony)?

For example if I have an array of:

array(
'key1' => 'value1',
'key2' => 'value2',
);

Is it possible in Twig to print:

key1: value1

key2: value2

Thanks

Answer 1

Try following format:

{% for key, value in array %}
    {{ key }} - {{ value }}
{% endfor %}

More Information on Offical Twig about Iterating over Keys and Values

https://twig.symfony.com/doc/3.x/tags/for.html#iterating-over-keys-and-values

Answer 2

You can use the keys filter. The keys filter returns the keys of an array.

{% set keys = array|keys %}

or

{% for key in array|keys %}
   {{ key }}
{% endfor %}