获取分页数列表

beike/Repositories/CategoryRepo.php

@@ -67,6 +67,21 @@ class CategoryRepo
         return DB::select($sql);
     }
 
+    /**
+     * 生成每页产品数列表, 客户可以自己选择如何分页
+     *
+     * @return array
+     */
+    public static function getPerPages(): array
+    {
+        $perPages = [];
+        $configPerPage = system_setting('base.product_per_page', 20);
+        for ($index = 1; $index <= 5; $index++) {
+            $perPages[] = $configPerPage * $index;
+        }
+        return $perPages;
+    }
+
     /**
      * 获取顶级及其子分类
      */
@@ -167,7 +182,7 @@ class CategoryRepo
     {
         if (is_int($category)) {
             $category = Category::query()->findOrFail($category);
-        } elseif (! ($category instanceof Category)) {
+        } elseif (!($category instanceof Category)) {
             throw new \Exception('invalid category');
         }
         $category->descriptions()->delete();

beike/Shop/Http/Controllers/CategoryController.php

@@ -27,6 +27,7 @@ class CategoryController extends Controller
             'filter_data'     => ['attr' => ProductRepo::getFilterAttribute($filterData), 'price' => ProductRepo::getFilterPrice($filterData)],
             'products_format' => $products->jsonSerialize(),
             'products'        => $products,
+            'per_pages'       => CategoryRepo::getPerPages(),
         ];
 
         return view('category', $data);