Merge two collections A and B, Adding one of every item B after every nth item A

[o-o-o-o-o]

Hi,

I’m trying to merge two collections into a new one by adding one item of $B to every nth item of $A:

  $A =        $programItems->
                  filter(function($child) {	
                  $child->date("Y-m-d", 'start_date') < date("Y-m-d") && 
                  $child->date(null, 'start_date') > strtotime('-6 month') &&
                  !($child->hasChildren()) ; 
                });

  $B =        $pages->
              find('programs')->
              children()->
              find('events','projects')->
              index()->
              visible()->
                 return
                 !($child->hasChildren());  })->
              shuffle()->
              limit(10);       

I’ve trawled through the forum and have seen:

Two variables in one aca merge collections

Hi ! I’m building a website where, on the homepage, news and projects are mixed but organised by date, then for each category there is an attributed page ‘projects’ and ‘news’ which I achieved. However for the homepage, I don’t really know how could I say : for each ‘project’ and ‘news’… For the project I’ve written the variable like this : <?php $projects = page('projects')->children()->visible()->sortBy('date', 'desc'); ?> then I called it like this : <?php foreach($projects as $project)…

One pagination, two collections

Hello fellow Kirby lovers. I’m having some trouble with pagination. So, there is two collection objects, both contains somes pages of the website. The first collection (let’s name it $one) contains some articles. The second collection (so $two) contains a lot of blog posts or equiv. Both are displayed on the home page, like a ‘two speeds carrousel’. But with sources from different parts of a webiste. The aim is to show only one item of $one and 28 items of $two on each page…

$pages->add($collection);

But can’t figure out an elegant way to do the above without resulting to some kind of loop.

thanks!

[o-o-o-o-o]

Scratched my own itch and created a pages method:

/**************************************************	
	
Interleave
Returns a new collections with item A inserted for every nth item B

**************************************************/

pages::$methods['interleave'] = function($pages, $items, $chunkNum=2) {

	$newItems = new Pages();
	$pagesChunks = $pages->chunk($chunkNum);
	$i=0; 

	foreach ($pagesChunks as $chunkItems) {

		$newItems->add($items->nth($i));
		$newItems->add($chunkItems);
		$i++;
		}
	
		return $newItems;

	  };

Usage:

$C = $A->interleave($B,4);