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我正在集合上使用Laravel contains方法。但这对我不起作用

foreach ($this->options as $option) {
    if($options->contains($option->id)) {
        dd('test');
    }
}

dd$期权；看起来像这样：

Collection {#390
  #items: array:1 [
    0 => array:3 [
      0 => array:7 [
        "id" => 10
        "slug" => "test"
        "name" => "test"
        "poll_id" => 4
        "created_at" => "2016-11-12 20:42:42"
        "updated_at" => "2016-11-12 20:42:42"
        "votes" => []
      ]
      1 => array:7 [
        "id" => 11
        "slug" => "test-1"
        "name" => "test"
        "poll_id" => 4
        "created_at" => "2016-11-12 20:42:42"
        "updated_at" => "2016-11-12 20:42:42"
        "votes" => []
      ]
      2 => array:7 [
        "id" => 12
        "slug" => "test-2"
        "name" => "test"
        "poll_id" => 4
        "created_at" => "2016-11-12 20:42:42"
        "updated_at" => "2016-11-12 20:42:42"
        "votes" => []
      ]
    ]
  ]
}

dd$选项->id的结果；是10岁

有什么不对劲吗？还是有更好的办法

您应该将一个键/值对传递给contains方法，该方法将 确定集合中是否存在给定对

您应该以以下方式使用方法：

foreach ($this->options as $option) {
  // Pass key inside contains method
  if($option->contains('id', $option->id)) {
      dd('test');
  }
}

---

希望这有助于使用以下命令，告诉Laravel您希望匹配“id”：

foreach ($this->options as $option) {
    if(!$options->flatten(1)->where('id',$option->id)->isEmpty()) {
        dd('test');
    }
}

$options->contains('id', $option->id);