Custom Grails validation

I would like to check to make sure two fields are not equal and one is greater then the other. Say yearBorn and yearMarried. They cannot be开发者_Go百科 equal and yearMarried must be greater then yearBorn.

You can use a 2-parameter custom validator that has access to both the value being validated and the entire instance:

static constraints = {
   yearMarried validator: { year, instance ->
      if (year == instance.yearBorn) {
         return 'i18n.code.for.equal.value'
      }
      if (year <= instance.yearBorn) {
         return 'i18n.code.for.born.after.married'
      }
   }
}