Grails Learnings

To log something use the following:

log.info('In the index action...')

For example:

class SampleController {
  def index() {
    log.info('In the index action...')
    // ...
  }
}




Multiple constraints for the same field are done like this:

    static constraints = {
  bagId(blank: false)
  barcode(blank: false, matches:/[0-9]/)