gistfile1.groovy

def doAddEntity() {
        withStandard { StandardVersion standard ->
            StandardEntity entity = new StandardEntity()
            entity.initialPopulation(params.entity.name, params.entity.description, params.list("attribute.name"), params.list("attribute.description"), params.list("attribute.required"), params.list("attribute.dataType"), standard)

            if (entity.validate()) {
                entity.save(flush: true)
                entity.updateEntityChildren(params.list('standardEntity.id'), params.list('standardEntity.required'), params.list('standardEntity.plurality'))
                entity.updateEnumChildren(params.list('standardEnum.id'), params.list('standardEnum.required'),)
                redirect(action: "showEntity", id: entity.id)
                return
            }
//            println entity.errors
            def model = populateEntityModel(standard)
            model.standard = standard
            model.entity = entity
            render(view: "addEntity", model: model)
        }
    }