Twig - loop default value

Question

I am trying to print array from the cotroller into the twig temlate. I want to print "-" whenever array is NULL. My problem is that in for-loop case it writes nothing, however single row working fine. Is there some simple way how to do it correctly?

this is not working as i expected

{% for key  in keywords|default('-') %} 
    {{ key~', '}} 
{% endfor %}

this is working

{{ key |default('-')}}

Darkstarone · Accepted Answer · 2017-04-22 21:34:45Z

2

You can use an {% else %} construct on a for loop to do something else if the array is null:

{% for key  in keywords %} 
    {{ key~', '}} 
{% else %}
    -
{% endfor %}

See the documentation here.

edited Apr 22, 2017 at 21:34

answered Apr 22, 2017 at 2:41

Darkstarone

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1 Comment

DarkBee Over a year ago

My comment doesn't make any sense I mean't {% else %}-{% endfor %} indeed, just found it strange to use twig to just output a string

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