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Is it possible to break out of a loop in twig? If it is, how would I do it?

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2 Answers

up vote 6 down vote accepted

Marion Newlevant wrote a Craft plugin that adds {% break %} and {% continue %} tags to Twig:

https://github.com/marionnewlevant/craft-mnbreakandcontinue

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So my answer is invalid? –  nicael 20 hours ago
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@nicael certainly not, your answer is definitely the best way to do it without any plugins. –  Brandon Kelly 20 hours ago
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up vote 4 down vote

Currently there is no special build-in command to do it (unless you want to use a plugin, as stated by Brandon Kelly). There is a workaround, however. The workaround is to check for additional condition.

{% set break = 0 %}

{# this variable we will set to 1 when we do not want code in our loop to run anymore #}

{% for i in 20..100 if break == 0 %} 
    ...
    {# on some condition we will set break to 1 to prevent running of further code #}
    {% set break = 1 %}
    ...
{% endfor %}
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Interesting. Apparently you can use Twig conditional filters as well. Have you run into a practical need for this, or is this a theoretical question? –  Matt Stein 21 hours ago
    
@Matt Didn't know about conditional filters. About practical need - yes, finding if number is prime ;-) And nobody forbid you to post an answer about using filters to break from a loop (I won't edit mine because its your idea) :-) –  nicael 21 hours ago
    
For reference, it doesn't look like break or continue will ever be part of Twig: github.com/fabpot/Twig/issues/654 –  Brad Bell 21 hours ago
    
@Brad So exclude "currently"? –  nicael 20 hours ago
    
@nicael - It's still technically accurate. There's always the chance it being missing will annoy us enough that we'll add it in Craft, like we did with {% switch %}. –  Brad Bell 20 hours ago
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