#210 Added the new pagination class

johncms · Mar 30, 2022 · 5c6b196 · 5c6b196
1 parent 19936dc
commit 5c6b196
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Showing 2 changed files with 94 additions and 8 deletions.
diff --git a/system/src/Http/Request.php b/system/src/Http/Request.php
@@ -113,17 +113,15 @@ private function filterVar(int|string $key, mixed $var, int $filter, mixed $opti
 
     /**
      * Getting a query string without the specified parameters.
-     *
-     * @param array $remove_params
-     * @return string
      */
-    public function getQueryString(array $remove_params = []): string
+    public function getQueryString(array $removeParams = [], array $additionalParams = []): string
     {
-        $query_params = $this->getQueryParams();
-        if (! empty($remove_params)) {
-            $query_params = array_diff_key($query_params, array_flip($remove_params));
+        $queryParams = $this->getQueryParams();
+        if (! empty($removeParams)) {
+            $queryParams = array_diff_key($queryParams, array_flip($removeParams));
         }
-        $str = http_build_query($query_params);
+        $queryParams = array_merge($queryParams, $additionalParams);
+        $str = http_build_query($queryParams);
 
         return $this->getUri()->getPath() . (! empty($str) ? '?' . $str : '');
     }

diff --git a/system/src/Utility/Pagination.php b/system/src/Utility/Pagination.php
@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Johncms\Utility;
+
+use JetBrains\PhpStorm\Pure;
+use Johncms\Http\Request;
+use Johncms\Settings\SiteSettings;
+use Johncms\View\Render;
+
+class Pagination
+{
+    private int $total;
+    private string $pageParamName;
+    private int $perPage;
+    private int $currentPage;
+    private Request $request;
+    private \Compolomus\Pagination\Pagination $pagination;
+
+    public function __construct(int $total, ?int $perPage = null, string $pageParamName = 'page', ?int $currentPage = null)
+    {
+        $this->total = $total;
+        $this->pageParamName = $pageParamName;
+        $this->request = di(Request::class);
+        if (! $perPage) {
+            $this->perPage = di(SiteSettings::class)->getPerPage();
+        } else {
+            $this->perPage = $perPage;
+        }
+        $this->setCurrentPage($currentPage);
+        $this->pagination = new \Compolomus\Pagination\Pagination($this->currentPage, $this->perPage, $this->total, 2);
+    }
+
+    public function setCurrentPage(?int $currentPage = null): static
+    {
+        if ($currentPage) {
+            $this->currentPage = $currentPage;
+        } else {
+            $this->currentPage = $this->request->getQuery($this->pageParamName, 1, FILTER_VALIDATE_INT);
+            if ($this->currentPage < 1) {
+                $this->currentPage = 1;
+            }
+        }
+        return $this;
+    }
+
+    private function buildUrl(int $page): string
+    {
+        return $this->request->getQueryString(additionalParams: [$this->pageParamName => $page]);
+    }
+
+    #[Pure]
+    public function getOffset(): int
+    {
+        return $this->pagination->getOffset();
+    }
+
+    #[Pure]
+    public function getLimit(): int
+    {
+        $limit = $this->pagination->getLimit();
+        return min($this->total, $limit);
+    }
+
+    public function getPages(): array
+    {
+        $items = $this->pagination->get();
+        return array_map(function ($item) {
+            return [
+                'active' => $item === $this->currentPage,
+                'name'   => $item,
+                'url'    => is_numeric($item) ? $this->buildUrl($item) : '',
+            ];
+        }, $items);
+    }
+
+    public function render(): string
+    {
+        $render = di(Render::class);
+        return $render->render(
+            'system::app/pagination',
+            [
+                'items' => $this->getPages(),
+            ]
+        );
+    }
+}