A pageable Collection implementation for Laravel
<?php
namespace App\Providers;
use Illuminate\Support\Collection;
use Illuminate\Pagination\LengthAwarePaginator;
class AppServiceProvider extends ServiceProvider
{
public function boot()
{
/**
* Paginate a standard Laravel Collection.
*
* @param int $perPage
* @param int $total
* @param int $page
* @param string $pageName
* @return array
*/
Collection::macro('paginate', function($perPage, $total = null, $page = null, $pageName = 'page') {
$page = $page ?: LengthAwarePaginator::resolveCurrentPage($pageName);
return new LengthAwarePaginator(
$this->forPage($page, $perPage),
$total ?: $this->count(),
$perPage,
$page,
[
'path' => LengthAwarePaginator::resolveCurrentPath(),
'pageName' => $pageName,
]
);
});
}
}
<?php
namespace App\Support;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Collection as BaseCollection;
class Collection extends BaseCollection
{
public function paginate($perPage, $total = null, $page = null, $pageName = 'page')
{
$page = $page ?: LengthAwarePaginator::resolveCurrentPage($pageName);
return new LengthAwarePaginator(
$this->forPage($page, $perPage),
$total ?: $this->count(),
$perPage,
$page,
[
'path' => LengthAwarePaginator::resolveCurrentPath(),
'pageName' => $pageName,
]
);
}
}
Laravel provides pagination out of the box for Eloquent Collections, but you can't use that by default on ordinary Collections.
Collections do have the forPage()
method, but it's more low-level, so it doesn't generate pagination links.
So you have to create a LengthAwarePaginator instance. But what if you want the behaviour to be the same as an Eloquent collection? Then use this macro!
The benefit of this is that the syntax and output is almost identical to the Eloquent Collection paginate()
method and so it can (relatively) easily be swapped out for an Eloquent Collection when testing.
Feel free to copy the most relevant code into your project. You're free to use and adapt as you need.
There are 2 approaches below. Which one you use is up to you, but you don't need both. I personally prefer the macro method as I feel it's cleaner and works well with minimal effort, but it's not so good at working with your IDE (code hints etc) and can feel a little detached in some cases.
macro
wayIf you prefer, add the Collection
macro to a Service Provider. That way you can call paginate()
on any collection:
collect([ ... ])->paginate( 20 );
See AppServiceProvider.php
for a sample implementation.
Where you want a "pageable" collection that is distinct from the standard Illuminate\Support\Collection
, implement a copy of Collection.php
in your application and simply replace your use Illuminate\Support\Collection
statements at the top of your dependent files with use App\Support\Collection
:
// use Illuminate\Support\Collection
use App\Support\Collection;
$items = [];
$collection = (new Collection($items))->paginate(20);
Note that this method doesn't work with the collect()
helper function.