title: Laravel 5 Illuminate\Http\Request has method not allowing static call
body: <p>I'm trying to call the Illuminate\Http\Request has method from one of my controllers.</p>
  
  <pre><code>Request::has('fields')
  </code></pre>
  
  <p>Following from the documentation exactly, yet I'm getting an error thrown:</p>
  
  <p><em>Non-static method Illuminate\Http\Request::has() should not be called statically, assuming $this from incompatible context</em></p>
  
  <p>I'm not sure what I'm doing wrong here, I tried following the documentation as closely as possible.</p>