grails - strange behavior for save action -

i have strange behavior domain saving , here domain:

class ads { string adtitle string addetails string duration date datecreated  static belongsto = [user:users]  static constraints = {     category (nullable:false)     adtitle (nullable:false, maxsize:100 )     addetails(nullable:false, maxsize:500 )     duration (inlist:["7 days", "14 days", "30 days"],nullable:true) }  static mapping ={ duration (sqltype:"datetime") } } 

here save action in controller:

    @transactional def save(ads adsinstance) {     if (adsinstance == null) {         notfound()         return     }      if (adsinstance.haserrors()) {         respond adsinstance.errors, view:'create'         return     }     adsinstance.user=users.get(springsecurityservice.currentuserid)      def adcreationdate = new date()      switch (adsinstance.duration) {//here i'm modifying duration          case "7 days":             adsinstance.duration=adcreationdate+7              break         case "14 days":             adsinstance.duration=adcreationdate+14              break         case "30 days":             adsinstance.duration=adcreationdate+30              break         default:             adsinstance.duration=adcreationdate+7      }     adsinstance.save flush:true     if (adsinstance.isattached()) //here return not saved     {         println "saved"     }     else     {         println " not saved"     }     request.withformat {         form multipartform {             flash.message = message(code: 'default.created.message', args: [                 message(code: 'ads.label', default: 'ads'),                 adsinstance.id             ])             //  redirect adsinstance             redirect action:'show' ,id:adsinstance.id         }         '*' { respond adsinstance, [status: created] }     } } 

in adsinstance.isattached() getting not saved although adsinstance.save flush:true called before , missing ?

you missing 2 things:

• after modifying duration field, not validating object again.
• you have identified issue if had added failonerror: true save method.

you have added constraint on duration field can contain values ["7 days", "14 days", "30 days"] only. inside switch block assigning date type values won't pass validation. secondly, according validation, sql type duration field should not datetime. should either create custom validatior or use transient field.