title: Laravel Update: add new value to existing value
body: <p>I wanted to update the query data with existing value without looping, is there any other way can make it.</p>
  
  <p>example</p>
  
  <pre><code>Product Table
  id  name     version  color
  1   iphone    4       white,black
  2   iphone    5       white,black
  </code></pre>
  
  <p>Update method</p>
  
  <pre><code>Product::where('name', "iphone")-&gt;update(['color' =&gt; existing.color+ , red]);
  
  Result
  id  name     version  color
  1   iphone    4       white,black,red
  2   iphone    5       white,black,red
  </code></pre>
  
  <p>Thank you</p>