title: Laravel Request File Change
body: <p>I have an issue for Request Laravel when i'm uploading file with key 'siup', the Request data shown like this:</p>
  
  <pre><code>"_token" =&gt; "Ab9zfuQn0rb0exCx7IdMcnAxQWi4iqWcfcDy319B"
  "_method" =&gt; "PUT"
  "first_name" =&gt; "first"
  "last_name" =&gt; "aaa"
  "email" =&gt; "black.y_+ta@email.com"
  "province" =&gt; "11"
  "city_id" =&gt; "38"
  "address" =&gt; "asdasd"
  "phone" =&gt; "1234567890"
  "company_type" =&gt; "koperasi"
  "company_name" =&gt; "qqq"
  "company_address" =&gt; "qqq"
  "pic" =&gt; "qqqa"
  "position" =&gt; "qqq"
  "siup" =&gt; UploadedFile {#30 ▶}
  </code></pre>
  
  <p>i want to do this to the request response</p>
  
  <pre><code>$request-&gt;merge(['siup'=&gt;$myVar]);
  </code></pre>
  
  <p>but the key siup did not change. i want to change the siup value to insert it to database with laravel eloquent update.</p>