feat: add article and production modules

backend/plugin/article/app/dao/CategoryDao.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace plugin\article\app\dao;
+
+use core\base\BaseDao;
+use plugin\article\app\model\Category;
+
+class CategoryDao extends BaseDao
+{
+    protected function setModel(): string
+    {
+        return Category::class;
+    }
+
+    protected function getKeywordFields(): array
+    {
+        return ['name', 'slug', 'description'];
+    }
+
+    public function selectModel(
+        array $where,
+        array|string $field = '*',
+        int $page = 0,
+        int $limit = 0,
+        string $order = '',
+        array $with = [],
+        bool $search = false,
+        ?array $withoutScopes = null
+    ): \Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Query\Builder|\Illuminate\Pagination\LengthAwarePaginator|null {
+        $query = parent::selectModel($where, $field, $page, $limit, $order, $with, $search, $withoutScopes);
+
+        if ($query instanceof \Illuminate\Database\Eloquent\Builder) {
+            $query->withCount(['contents as article_count']);
+        }
+
+        return $query;
+    }
+}