Twig - loop through part of an array

Question

What I already can do is this:

{% for _item in objects %}
    {{ _item.id }}
{% endfor %}

or this:

{% for i in 0..objects|length-1 %}
    {{ objects[i].id }}
{% endfor %}

To loop though the whole array.

What I want to do is:

loop through a part of an array
if the end of the array is reached: stop (instead of throwing an exception)

Kinda like this - depending on which is smaller (imagine there are only 5 items):

{% for i in 0.. (10 OR objects|length-1) %}
    {{ objects[i].id }}
{% endfor %}

What's the easiest/shortest way of writing this?

EDIT

Of course, I could test it in my controller and than pass the result as a variable to the template, but isn't there an easier way?

Ondrej Machulda · Accepted Answer · 2022-09-20 01:01:04Z

4

You're looking for the slice filter.

edited Sep 20, 2022 at 1:01

Ondrej Machulda

1,0191 gold badge15 silver badges25 bronze badges

answered Jul 7, 2012 at 6:23

Maerlyn

34.2k18 gold badges99 silver badges89 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

JGallardo Over a year ago

Would you be able to add an example in addition to just a link

wouch · Accepted Answer · 2020-06-24 18:17:22Z

2

Posting for anyone who may need this in the future.

I accomplished this with the following slice method to get half of the array and then the other half. I needed this to set a class for only the first half of an array, no matter the number (in my case nav sub-items). Remember to update Array as needed

{% set half_first = Array|slice(0, Array|length / 2) %}
{% set half_second = Array|slice(Array|length / 2) %}

answered Jun 24, 2020 at 18:17

wouch

1,2418 silver badges6 bronze badges

Collectives™ on Stack Overflow

Twig - loop through part of an array

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related