title: Grails 3.2.2 Select Options from Domain Constraints
body: <p>Is it possible to fill the options of a <code>&lt;select&gt;</code> with the availables options in a domain's <code>constraints</code></p>
  
  <pre><code>static constraints = {
      variable(inList: ["value1", "value2", "value3"])
  }
  </code></pre>