56 lines
2.3 KiB
PHP
56 lines
2.3 KiB
PHP
<?php
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namespace App\Services;
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use Illuminate\Support\ServiceProvider;
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use JetBrains\PhpStorm\ArrayShape;
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class PaginatorService extends ServiceProvider {
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/**
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* Crea una lista asociativa que indica como paginar una lista de elementos.
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* @param $perPage int Cuantos elementos se van a mostrar por pagina
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* @param $page int Que pagina se va a mostrar ahora
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* @param $total int Cuantos elementos en total hay
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* @return array Una lista asociativa conteniendo todos los datos a saber para realizar la paginación
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*/
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#[ArrayShape([
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'per_page' => "int",
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'from' => "int",
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'to' => "int",
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'total' => "int",
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'current_page' => "int",
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'last_page' => "int",
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'links' => 'array'
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])]
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public function paginate(int $perPage, int $page, int $total, string $route, array $data = []) {
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// Se mostraran entre 1 o mas elementos por pagina
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$perPage = max(1, $perPage);
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// Se necesita saber cuantas paginas son, no recuerdo porque la formula funciona, pero lo hace
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$lastPage = floor(($total + $perPage - 1) / $perPage);
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// Se necesita la pagina, la cual debe estar entre 1 y el numero de paginas calculadas previamente
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$currentPage = min($lastPage, max(1, $page));
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// Cuantos elementos se van a saltar para empezar a tomar usuarios
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$skip = ($currentPage - 1) * $perPage;
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return [
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'per_page' => $perPage,
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'from' => max(0, $skip + 1),
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'to' => min($total, $skip + $perPage),
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'total' => $total,
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'current_page' => $currentPage,
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'last_page' => $lastPage,
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'links' => [
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'first' => route($route, array_merge(['page' => 1, 'per_page' => $perPage], $data)),
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'prev' => $currentPage - 1 >= 1 ? route($route, array_merge(['page' => $currentPage - 1, 'per_page' => $perPage], $data)) : null,
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'current' => route($route, array_merge(['page' => $currentPage, 'per_page' => $perPage], $data)),
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'next' => $currentPage + 1 <= $lastPage ? route($route, array_merge(['page' => $currentPage + 1, 'per_page' => $perPage], $data)) : null,
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'last' => route($route, array_merge(['page' => $lastPage, 'per_page' => $perPage], $data)),
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]
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];
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}
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}
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