VisitController.java
/*
* Copyright 2012-2019 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.samples.petclinic.owner;
import org.springframework.samples.petclinic.visit.Visit;
import org.springframework.samples.petclinic.visit.VisitRepository;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.*;
import javax.validation.Valid;
import java.util.Map;
/**
* @author Juergen Hoeller
* @author Ken Krebs
* @author Arjen Poutsma
* @author Michael Isvy
* @author Dave Syer
*/
@Controller
class VisitController {
private final VisitRepository visits;
private final PetRepository pets;
public VisitController(VisitRepository visits, PetRepository pets) {
this.visits = visits;
this.pets = pets;
}
@InitBinder
public void setAllowedFields(WebDataBinder dataBinder) {
dataBinder.setDisallowedFields("id");
}
/**
* Called before each and every @RequestMapping annotated method.
* 2 goals:
* - Make sure we always have fresh data
* - Since we do not use the session scope, make sure that Pet object always has an id
* (Even though id is not part of the form fields)
*
* @param petId
* @return Pet
*/
@ModelAttribute("visit")
public Visit loadPetWithVisit(@PathVariable("petId") int petId, Map<String, Object> model) {
Pet pet = this.pets.findById(petId);
model.put("pet", pet);
Visit visit = new Visit();
pet.addVisit(visit);
return visit;
}
// Spring MVC calls method loadPetWithVisit(...) before initNewVisitForm is called
@GetMapping("/owners/*/pets/{petId}/visits/new")
public String initNewVisitForm(@PathVariable("petId") int petId, Map<String, Object> model) {
return "pets/createOrUpdateVisitForm";
}
// Spring MVC calls method loadPetWithVisit(...) before processNewVisitForm is called
@PostMapping("/owners/{ownerId}/pets/{petId}/visits/new")
public String processNewVisitForm(@Valid Visit visit, BindingResult result) {
if (result.hasErrors()) {
return "pets/createOrUpdateVisitForm";
} else {
this.visits.save(visit);
return "redirect:/owners/{ownerId}";
}
}
}