public static function getCategoriesWithPosts()
{
foreach (DiscussionCategories::find()->all() as $category) {
$q[] = '(SELECT *,discussion_categories.id as dcId FROM discussion_categories
LEFT OUTER JOIN discussion_posts on discussion_posts.discussion_category_id = discussion_categories.id
where discussion_categories.id = ' . $category['id'] . ' ORDER BY discussion_posts.id DESC LIMIT 3 )';
}
if (!empty($q)) {
//var_dump(DiscussionCategories::_group_by(Yii::$app->db->createCommand(implode(' UNION ALL ', $q))->queryAll(), 'name'));
/*Yii::$app->end();*/
return DiscussionCategories::_group_by(Yii::$app->db->createCommand(implode(' UNION ALL ', $q))->queryAll(), 'name');
}
return [];
}
