I have a view and It added fields in groups and overide view grouping twig template
{#
/**
* @file
* Theme override to display a single views grouping.
*
* Available variables:
* - view: The view object.
* - grouping: The grouping instruction.
* - grouping_level: A number indicating the hierarchical level of the grouping.
* - title: The group heading.
* - content: The content to be grouped.
* - rows: The rows returned from the view.
*
* @see template_preprocess_views_view_grouping()
*/
#}
<div class="view-grouping-header " data-id="item-{{ counter }}">{{ title }}</div>
<div class="view-grouping-content">{{ content }}</div>counter variable should append the number of time grouping accrues. let say in my case there are 5 times grouping. So i counter add 1,2,3,4,5 oneach grouping
<div class="view-grouping-header " data-id="item-1">{{ title }}</div>
<div class="view-grouping-content">{{ content }}</div>
<div class="view-grouping-header " data-id="item-2">{{ title }}</div>
<div class="view-grouping-content">{{ content }}</div>
<div class="view-grouping-header " data-id="item-3">{{ title }}</div>
<div class="view-grouping-content">{{ content }}</div>
<div class="view-grouping-header " data-id="item-4">{{ title }}</div>
<div class="view-grouping-content">{{ content }}</div>
<div class="view-grouping-header " data-id="item-5">{{ title }}</div>
<div class="view-grouping-content">{{ content }}</div>Closed: cannot reproduce
10.1 ✨
Last updated
Very specific support questions are better asked on the support forums like https://drupal.stackexchange.com/
In this case you probably need to do this in a preprocessor function somewhere and not in the twig template, but no idea if this can be done for grouping.