title: Grails - Set "disabled" attribute name and value in GSP
body: <p>I´m trying to do this without success:</p>
  
  <pre><code>&lt;g:textField title="${title}" ${disabled} /&gt;
  </code></pre>
  
  <p>I want to apply a <strong>disabled</strong> attribute, ONLY if the ${disabled} variable is TRUE.
  I don't want to use conditionals, because in other views I got a lot of code and using IF statements, will be a chaos.</p>
  
  <p>The other thing is applying the attribute like this:</p>
  
  <pre><code>&lt;g:textField title="${title}" disabled="${disabled}" /&gt;
  </code></pre>
  
  <p>But when I put the <strong>disabled</strong> attribute, no mather the content of the variable, It just always disables the field.</p>