Today, I wanted to style a little bit my project. The basic way in
classic PHP project would be to use the iterator variable of your
for loop with the use of modulo.
For example:
{% raw %}<div class="<?php echo ($i % 2 == 0) 'odd' : 'even' ; ?>"></div>{% endraw %}
In twig, when you use a loop, there are several variables that you can
use like loop.index, loop.first, loop.last. I won’t copy/paste the
official documentation here, you can read it here
twig loop
documentation.
To use the modulo function in twig, just use
{% raw %} {{ 10 % 2 }} {% endraw %}
And there you go, as simple as in PHP.
Then, using twig, you can do this:
{% raw %} {% if loop.index % 2 == 0 %} {% endraw %}
Or in my case I needed this :
{% raw %} {% if loop.parent.loop.index % 2 == 0 %} {% endraw %}
To be able to use the index of my parent loop :)
On this blog, I found the following tips :
{% raw %} {% if loop.index divisibleby(2) %} {% endraw %}
Isn’t it beautiful ? But it gets even better!
{% raw %} {{ cycle(['odd', 'even'], loop.index) }} {% endraw %}
And there you go, thank you twig !