排序

2026-09-04 22:10:28 +08:00
parent cf1d3a6229
commit 1e25459676
4 changed files with 65 additions and 1 deletions
@@ -74,6 +74,36 @@ class ProductCategoryModel extends Model
        return static::buildTree($query->get($columns)->toArray());
    }

+    /**
+     * 按树展示顺序（sort/id 深度优先）获取分类 ID 列表，供商品列表等按分类顺序排序
+     *
+     * @param bool $onlyEnabled 是否仅包含启用分类
+     * @return array<int, int>
+     */
+    public static function getTreeOrderedIds(bool $onlyEnabled = false): array
+    {
+        return static::flattenTreeIds(static::getTreeData(['id', 'parent_id'], $onlyEnabled));
+    }
+
+    /**
+     * 深度优先展开分类树为有序 ID 列表
+     *
+     * @param array<int, array<string, mixed>> $tree
+     * @return array<int, int>
+     */
+    private static function flattenTreeIds(array $tree): array
+    {
+        $ids = [];
+        foreach ($tree as $node) {
+            $ids[] = (int) $node['id'];
+            if (!empty($node['children'])) {
+                $ids = [...$ids, ...static::flattenTreeIds($node['children'])];
+            }
+        }
+
+        return $ids;
+    }
+
    /**
     * 将扁平分类列表组装为树
     *