title: Default value in a field in the Solr schema can be the current date?
body: <p>I'm using Solr and I would like to add a field <code>last_update</code> in the <code>schema.xml</code> where the default value would be the current date when the document is added or updated. </p>
  
  <p>Do you have an idea how can I do this?</p>
  
  <p>Thanks</p>