title: Grails Field Plugin: Select tag for one-to-many relationships
body: <p>I'm using Grails 2.2.3 and Fields plugin 1.3. 
  I want to customize fields to manage one-to-many relationships using select tag.</p>
  
  <p>In <code>views/_fields/oneToMany/_input.gsp</code> I have:</p>
  
  <pre><code>&lt;g:select name="${property}.id" from="${type.list()}" optionKey="id" value="${value}" class="form-control one-to-many" noSelection="['null': "${label}"]" /&gt;
  </code></pre>
  
  <p>But <code>type</code> is a set, so I can't use <code>list</code> function.</p>
  
  <p>How can I retrieve target domain class?</p>