title: Laravel collection contains
body: <p>I'm using the Laravel <code>contains</code> method on a collection <a href="https://laravel.com/docs/5.3/collections#method-contains" rel="noreferrer">https://laravel.com/docs/5.3/collections#method-contains</a>. But it does not work for me. </p>
  
  <pre><code>foreach ($this-&gt;options as $option) {
      if($options-&gt;contains($option-&gt;id)) {
          dd('test');
      }
  }
  </code></pre>
  
  <p><code>dd($options);</code> looks like this:</p>
  
  <pre><code>Collection {#390
    #items: array:1 [
      0 =&gt; array:3 [
        0 =&gt; array:7 [
          "id" =&gt; 10
          "slug" =&gt; "test"
          "name" =&gt; "test"
          "poll_id" =&gt; 4
          "created_at" =&gt; "2016-11-12 20:42:42"
          "updated_at" =&gt; "2016-11-12 20:42:42"
          "votes" =&gt; []
        ]
        1 =&gt; array:7 [
          "id" =&gt; 11
          "slug" =&gt; "test-1"
          "name" =&gt; "test"
          "poll_id" =&gt; 4
          "created_at" =&gt; "2016-11-12 20:42:42"
          "updated_at" =&gt; "2016-11-12 20:42:42"
          "votes" =&gt; []
        ]
        2 =&gt; array:7 [
          "id" =&gt; 12
          "slug" =&gt; "test-2"
          "name" =&gt; "test"
          "poll_id" =&gt; 4
          "created_at" =&gt; "2016-11-12 20:42:42"
          "updated_at" =&gt; "2016-11-12 20:42:42"
          "votes" =&gt; []
        ]
      ]
    ]
  }
  </code></pre>
  
  <p>Result of <code>dd($option-&gt;id);</code> is <code>10</code>.</p>
  
  <p>What could be wrong? Or is there a better way?</p>