Create the two handler methods listed below in EventController. We’ll add code
to these in a moment, so just put the method outline in place for
now.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | @Controller
@RequestMapping("events")
public class EventController {
@GetMapping
public String displayAllEvents(Model model) {
model.addAttribute("title", "All Events");
model.addAttribute("events", EventData.getAll());
return "events/index";
}
@GetMapping("create")
public String displayCreateEventForm(Model model) {
model.addAttribute("title", "Create Event");
return "events/create";
}
@PostMapping("create")
public String processCreateEventForm(@ModelAttribute Event newEvent) {
EventData.add(newEvent);
return "redirect:";
}
@GetMapping("delete")
public String displayDeleteEventForm(Model model) {
model.addAttribute("title", "Delete Events");
model.addAttribute("events", EventData.getAll());
return "events/delete";
}
@PostMapping("delete")
public String processDeleteEventsForm(@RequestParam(required = false) int[] eventIds) {
if (eventIds != null) {
for (int id : eventIds) {
EventData.remove(id);
}
}
return "redirect:";
}
@GetMapping("edit/{eventId}")
public String displayEditForm(Model model, @PathVariable int eventId){
}
@PostMapping("edit")
public String processEditForm(int eventId, String name, String description) {
}
}
|
Back in the displayEditForm handler, round out the controller method.
@GetMapping("edit/{eventId}")
public String displayEditForm(Model model, @PathVariable int eventId){
Event eventToEdit = EventData.getById(eventId);
model.addAttribute("event", eventToEdit);
String title = "Edit Event " + eventToEdit.getName() + " (id=" + eventToEdit.getId() + ")";
model.addAttribute("title", title );
return "events/edit";
}
In processEditForm,
@PostMapping("edit")
public String processEditForm(int eventId, String name, String description) {
Event eventToEdit = EventData.getById(eventId);
eventToEdit.setName(name);
eventToEdit.setDescription(description);
return "redirect:";
}