Question

我正在尝试使用以下代码转换故障单的集合

public function transform(Ticket $ticket) {
    return [
        'id' => $ticket->id,
        'title' => $ticket->title,
        'status' => $this->transformerMessage($ticket->status),
        'interactions' => 
              $this->collection(
                   $ticket->interactions,
                   new InteractionTransformer(),
                   'interactions'
              )
    ];
}

但互动结果始终为空。这是我得到的输出示例：

{
  "data": [
    {
      "id": 1,
      "title": "Earum repudiandae corporis sapiente at odit itaque ratione.",
      "status": "Open",
      "interactions": {}
    },
    {
      "id": 2,
      "title": "Odit impedit vitae quo sit molestiae eius.",
      "status": "Open",
      "interactions": {}
    },
    {
      "id": 3,
      "title": "Fuga cum corrupti ut.",
      "status": "Open",
      "interactions": {}
    }
  ]
}

如果我尝试消亡并转储 $ticket->interactions变量，我会得到5个项目的集合（证明该变量不为空）。

我在这里做错了什么？

感谢您的关注。

Answer 1

你的集合调用中的$ this指的是从TransformerAbstract继承的变换器，它从资源类型创建一个集合。

尝试添加 - ＆gt; getData（）到最后，从Dingo资源集合中提取REAL集合。

public function transform(Ticket $ticket) {
    return [
        'id' => $ticket->id,
        'title' => $ticket->title,
        'status' => $this->transformerMessage($ticket->status),
        'interactions' => 
              $this->collection(
                   $ticket->interactions,
                   new InteractionTransformer(),
                   'interactions'
              )->getData()
    ];
}

Answer 2

试试这个。回调引用dingo变换：

public function transform(Ticket $ticket) {
    $output = $ticket->interactions;
    $trans = new InteractionTransformer();
    return [
        'id' => $ticket->id,
        'title' => $ticket->title,
        'status' => $this->transformerMessage($ticket->status),
        'interactions' => 
              $ticket->interactions->transform(
                 function($i) use ($trans) {
                    return $trans->transform($i);
                 }
              )
    ];
}

使用Fractal，Dingo API，Laravel 5进行嵌套转换

2 个答案: