Grails ical4j サンプル

CalendarController.groovy

// grails-app/controllers/cal/CalendarController.groovy

package cal

import net.fortuna.ical4j.data.*
import net.fortuna.ical4j.model.*
import net.fortuna.ical4j.model.property.*

class CalendarController {
	def index = {
		params.max = Math.min( params.max ? params.max.toInteger() : 10, 100)
		def events = Event.list( params )

		def builder = new ContentBuilder()
		def calendar = builder.calendar() {
			calscale('GREGORIAN')
			method('PUBLISH')
			xproperty('X-WR-CALNAME').setValue('My Calendar')
			version('2.0')
			
			for(event in events) {
				vevent() {
					if(event.isDay) {
						dtstart(new DtStart(new Date(event.start)))
						dtend(new DtEnd(new Date(event.end)))
					} else {
						dtstart(new DtStart(new DateTime(event.start)))
						dtend(new DtEnd(new DateTime(event.end)))
					}
					summary(event.title)
					if(event.description) {
						description(event.description)
					}
				}
			}
		}
		render(contentType: 'text/calendar', text: calendar)
	}
}

Event.groovy

// grails-app/domain/cal/Event.groovy

package cal

import javax.persistence.*;

@Entity
class Event implements Serializable {

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	Long id

	static constraints = {
		id visible:false
	}

	String title
	String description
	Date start
	Date end
	Boolean isDay = false
}