def addTimetable(timetable) {
    if(!timetable.hasErrors() && timetable.save()) {
      courseOffering.addToTimetables( timetable ).save(flush: true)
    }
  }



2009-11-23 16:41:28,220 [5046040@qtp8-2] ERROR errors.GrailsExceptionResolver  -
 groovy.lang.MissingMethodException: No signature of method: org.codehaus.groovy
.grails.web.servlet.mvc.GrailsParameterMap.hasErrors() is applicable for argumen
t types: () values: []
org.codehaus.groovy.runtime.InvokerInvocationException: groovy.lang.MissingMetho
dException: No signature of method: org.codehaus.groovy.grails.web.servlet.mvc.G
railsParameterMap.hasErrors() is applicable for argument types: () values: []