title: Rails simple form input with collection saves id's of object instead of names
body: <p>Rails simple form input with collection saves id's of object instead of names.
  I have simple collection:</p>
  
  <pre><code> = address_f.input :state, collection: State.all, :required =&gt; true, label: t('content.realty.state')
  </code></pre>
  
  <p>State have id and name column. As output in view I see a proper select with proper values, but on save the id's are saved instead of names.</p>