pmall said:

You can merge two collections

$posts = Post::orderBy('created_at', 'DESC')->get(); 
$org = Organization::orderBy('created_at', 'DESC')->get();

$all = $posts->merge($org);

Then you can sort it

$all_sorted = $all->sort(function($a, $b){
 // classic sort callback
});

Thank you so much but can u explain this, pls?

$all_sorted = $all->sort(function($a, $b){
  // classic sort callback
});

see the sort method

However a basic understanding of php is required to use laravel at its full potential, using a callback function to sort an array is a common thing.

pmall said:

see the sort method

However a basic understanding of php is required to use laravel at its full potential, using a callback function to sort an array is a common thing.

thank you so much. I finally got it :)