title: How to get all the values from a Groovy Map in a select of a GSP page
body: <p>Let's say we have a map like:</p>
  
  <pre><code>def mostBeautifulCities =
  [
      cadiz : "Cádiz",
      KeyForCity2 : "some value for city2"
  ]
  </code></pre>
  
  <p><strong>How could we list all values?</strong> (I did not find a easy way looking at the <a href="http://groovy.codehaus.org/groovy-jdk/java/util/Map.html" rel="nofollow">Groovy JDK documentation</a>).</p>
  
  <p>I want to show all values in a select control:</p>
  
  <pre><code>&lt;g:select id="city" name="city" 
      from="${  mostBeautifulCities.(...)  }" 
      noSelection="${['':'Select a ugly city...']}" /&gt;
  </code></pre>