sprain sprain - 3 months ago 82
Twig Question

Twig: in_array or similar possible within if statement?

I am using Twig as templating engine and I am really loving it. However, now I have run in a situation which definitely mustbe accomplishable in a simpler way than I have found.

What I have right now is this:

{% for myVar in someArray %}
{% set found = 0 %}
{% for id, data in someOtherArray %}
{% if id == myVar %}
{{ myVar }} exists within someOtherArray.
{% set found = 1 %}
{% endif %}
{% endfor %}

{% if found == 0 %}
{{ myVar }} doesn't exist within someOtherArray.
{% endif %}
{% endfor %}


What I am looking for is something more like this:

{% for myVar in someArray %}
{% if myVar is in_array(array_keys(someOtherArray)) %}
{{ myVar }} exists within someOtherArray.
{% else %}
{{ myVar }} doesn't exist within someOtherArray.
{% endif %}
{% endfor %}


Is there a way to accomplish this which I haven't seen yet?

If I need to create my own extension, how can I access myVar within the test function?

Thanks for your help!

Answer

You just have to change the second line of your second code-block from

{% if myVar is in_array(array_keys(someOtherArray)) %}

to

{% if myVar in someOtherArray|keys %}

in is the containment-operator and keys a filter that returns an arrays keys.