将Laravel DB :: raw()查询与join连接到Eloquent

时间:2015-02-25 22:25:21

标签: php mysql laravel laravel-4 eloquent

我有一个模特'图片' (数据库表' uploaded_pictures')有很多'喜欢'(s)

private function likeWrapper() {
    return $this->hasMany( 'Like', 'typeId');
}

public function likes() {
    return $this->likeWrapper()->where( 'type', '=', Config::get( 'enums.content_types.PICTURE' ) )->get();
}

现在我想创建一个页面,分页,返回按喜欢计数排序的所有图片。我使用Collection sortBy方法完成了这项工作:

$pictures = Picture::get()->sortByDesc( function($picture) {
        return $picture->likes()->count();
});

但是这个结果不能分页。我有一个原始查询来完成这项工作,但我很难将其转换为Eloquent查询构建器:

        $query = "SELECT p.*,  COUNT(l.id) AS countLikes
            FROM uploaded_pictures AS p
            LEFT OUTER JOIN
                (SELECT id, typeId, type FROM likes WHERE type='picture') AS l
            ON p.id = l.typeId
            WHERE  date<='$referenceDate'
            GROUP BY p.id, l.typeId
            ORDER BY countLikes DESC";

    $pictures = DB::select(DB::raw($query));

Eloquent中此查询的等效内容是什么?我使用的是Laravel 4.2.11。

1 个答案:

答案 0 :(得分:0)

我希望它会起作用:

        $pictures = Picture::leftjoin('likes', 'pictures.id', '=', 'likes.typeId')
                    ->select(DB::raw('pictures.*, COUNT(likes.id) as countLikes'))
                    ->where('likes.type', '=', 'Picture')
                    ->orWhere('likes.typeId')
                    ->orderBy('countLikes', 'DESC')
                    ->groupBy('pictures.id')
                    ->get();