title: Laravel validate at least one item in a form array
body: <p>I have a form with a series of numbers in an array:</p>
  
  <pre><code>&lt;input type="number" name="items[{{ $sku }}]" min="0" /&gt;
  &lt;input type="number" name="items[{{ $sku }}]" min="0" /&gt;
  &lt;input type="number" name="items[{{ $sku }}]" min="0" /&gt;
  </code></pre>
  
  <p>I would like to validate that there is at least one of those input fields that has a value.</p>
  
  <p>I tried the following in my <strong>OrderCreateRequest</strong>, yet the test is passing:</p>
  
  <pre><code>return [
      'items' =&gt; 'required|array|min:1'
  ];
  </code></pre>
  
  <p>Am I missing something?</p>