How to add option at first position in ng-options
<p>I <code>ng-option</code> element in my page.</p>

<p>Here how it looks in template:</p>

<pre><code>&lt;select ng-model="selectedItem" ng-options="item.name for item in items track by item.id"&gt;&lt;/select&gt;
</code></pre>

<p>In controller:</p>

<pre><code> $scope.selectedItem = {};

 $scope.items = [{name: 'one', id: 30 },{ name: 'two', id: 27 },{ name: 'threex', id: 50 }];
</code></pre>

<p>In my project I get scope items from some lookup table.</p>

<p>I need to add to ng-select this element with value <code>-1</code>:</p>

<pre><code>&lt;option value="-1"&gt;- manual -&lt;/option&gt;
</code></pre>

<p>And it looks like that:</p>

<pre><code>&lt;select ng-model="selectedItem" ng-options="item.name for item in items track by item.id"&gt;
   &lt;option value="-1"&gt;- manual -&lt;/option&gt;
&lt;/select&gt;
</code></pre>

<p>Here is <a href="https://plnkr.co/edit/sMn33p2FKOywowZwGbvd?p=preview" rel="nofollow">Plunker</a>.</p>

<p>But I don't see in view <code>manual</code> option.</p>

<p>Any idea why I cant see manual option in the view?</p>