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Update OwnerController.java

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Yasaswini Desu 2025-02-21 12:25:12 +05:30 committed by GitHub
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1 changed files with 134 additions and 90 deletions
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src/main/java/org/springframework/samples/petclinic/owner/OwnerController.java
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@ -44,112 +44,156 @@ import org.springframework.web.servlet.mvc.support.RedirectAttributes;
@Controller @Controller
class OwnerController { class OwnerController {
private static final String VIEWS_OWNER_CREATE_OR_UPDATE_FORM = "owners/createOrUpdateOwnerForm"; private static final String VIEWS_OWNER_CREATE_OR_UPDATE_FORM = "owners/createOrUpdateOwnerForm";
private final OwnerRepository owners; private final OwnerRepository owners;
public OwnerController(OwnerRepository clinicService) { public OwnerController(OwnerRepository clinicService) {
this.owners = clinicService; this.owners = clinicService;
} }
@InitBinder @InitBinder
public void setAllowedFields(WebDataBinder dataBinder) { public void setAllowedFields(WebDataBinder dataBinder) {
dataBinder.setDisallowedFields("id"); dataBinder.setDisallowedFields("id");
} }
@ModelAttribute("owner") @ModelAttribute("owner")
public Owner findOwner(@PathVariable(name = "ownerId", required = false) Integer ownerId) { public Owner findOwner(@PathVariable(name = "ownerId", required = false) Integer ownerId) {
return ownerId == null ? new Owner() : this.owners.findById(ownerId); return ownerId == null ? new Owner() : this.owners.findById(ownerId);
} }
@PostMapping("/owners/new") @PostMapping("/owners/new")
public String processCreationForm(@Valid Owner owner, BindingResult result, RedirectAttributes redirectAttributes) { public String processCreationForm(@Valid Owner owner, BindingResult result, RedirectAttributes redirectAttributes) {
if (result.hasErrors()) { if (result.hasErrors()) {
redirectAttributes.addFlashAttribute("error", "There was an error in creating the owner."); redirectAttributes.addFlashAttribute("error", "There was an error in creating the owner.");
return VIEWS_OWNER_CREATE_OR_UPDATE_FORM; return VIEWS_OWNER_CREATE_OR_UPDATE_FORM;
} }
this.owners.save(owner); this.owners.save(owner);
redirectAttributes.addFlashAttribute("message", "New Owner Created"); redirectAttributes.addFlashAttribute("message", "New Owner Created");
return "redirect:/owners/" + owner.getId(); return "redirect:/owners/" + owner.getId();
} }
@GetMapping("/owners/find") @GetMapping("/owners/find")
public String initFindForm() { public String initFindForm() {
return "owners/findOwners"; return "owners/findOwners";
} }
@GetMapping("/owners") @GetMapping("/owners")
public String processFindForm(@RequestParam(defaultValue = "1") int page, Owner owner, BindingResult result, public String processFindForm(@RequestParam(defaultValue = "1") int page, Owner owner, BindingResult result, Model model) {
Model model) { // allow parameterless GET request for /owners to return all records
// allow parameterless GET request for /owners to return all records if (owner.getLastName() == null) {
if (owner.getLastName() == null) { owner.setLastName(""); // empty string signifies broadest possible search
owner.setLastName(""); // empty string signifies broadest possible search }
}
// find owners by last name // find owners by last name
Page<Owner> ownersResults = findPaginatedForOwnersLastName(page, owner.getLastName()); Page<Owner> ownersResults = findPaginatedForOwnersLastName(page, owner.getLastName());
if (ownersResults.isEmpty()) { if (ownersResults.isEmpty()) {
// no owners found // no owners found
result.rejectValue("lastName", "notFound", "not found"); result.rejectValue("lastName", "notFound", "not found");
return "owners/findOwners"; return "owners/findOwners";
} }
if (ownersResults.getTotalElements() == 1) { if (ownersResults.getTotalElements() == 1) {
// 1 owner found // 1 owner found
owner = ownersResults.iterator().next(); owner = ownersResults.iterator().next();
return "redirect:/owners/" + owner.getId(); return "redirect:/owners/" + owner.getId();
} }
// multiple owners found // multiple owners found
return addPaginationModel(page, model, ownersResults); return addPaginationModel(page, model, ownersResults);
} }
private String addPaginationModel(int page, Model model, Page<Owner> paginated) { private String addPaginationModel(int page, Model model, Page<Owner> paginated) {
List<Owner> listOwners = paginated.getContent(); List<Owner> listOwners = paginated.getContent();
model.addAttribute("currentPage", page); model.addAttribute("currentPage", page);
model.addAttribute("totalPages", paginated.getTotalPages()); model.addAttribute("totalPages", paginated.getTotalPages());
model.addAttribute("totalItems", paginated.getTotalElements()); model.addAttribute("totalItems", paginated.getTotalElements());
model.addAttribute("listOwners", listOwners); model.addAttribute("listOwners", listOwners);
return "owners/ownersList"; return "owners/ownersList";
} }
@GetMapping("/owners/{ownerId}/edit") @GetMapping("/owners/{ownerId}/edit")
public String initUpdateOwnerForm() { public String initUpdateOwnerForm() {
return VIEWS_OWNER_CREATE_OR_UPDATE_FORM; return VIEWS_OWNER_CREATE_OR_UPDATE_FORM;
} }
@PostMapping("/owners/{ownerId}/edit") @PostMapping("/owners/{ownerId}/edit")
public String processUpdateOwnerForm(@Valid Owner owner, BindingResult result, @PathVariable("ownerId") int ownerId, public String processUpdateOwnerForm(@Valid Owner owner, BindingResult result, @PathVariable("ownerId") int ownerId,
RedirectAttributes redirectAttributes) { RedirectAttributes redirectAttributes) {
if (result.hasErrors()) { if (result.hasErrors()) {
redirectAttributes.addFlashAttribute("error", "There was an error in updating the owner."); redirectAttributes.addFlashAttribute("error", "There was an error in updating the owner.");
return VIEWS_OWNER_CREATE_OR_UPDATE_FORM; return VIEWS_OWNER_CREATE_OR_UPDATE_FORM;
} }
if (owner.getId() != ownerId) { if (owner.getId() != ownerId) {
result.rejectValue("id", "mismatch", "The owner ID in the form does not match the URL."); result.rejectValue("id", "mismatch", "The owner ID in the form does not match the URL.");
redirectAttributes.addFlashAttribute("error", "Owner ID mismatch. Please try again."); redirectAttributes.addFlashAttribute("error", "Owner ID mismatch. Please try again.");
return "redirect:/owners/{ownerId}/edit"; return "redirect:/owners/{ownerId}/edit";
} }
owner.setId(ownerId); owner.setId(ownerId);
this.owners.save(owner); this.owners.save(owner);
redirectAttributes.addFlashAttribute("message", "Owner Values Updated"); redirectAttributes.addFlashAttribute("message", "Owner Values Updated");
return "redirect:/owners/{ownerId}"; return "redirect:/owners/{ownerId}";
} }
/** /**
* Custom handler for displaying an owner. * Custom handler for displaying an owner.
* @param ownerId the ID of the owner to display * @param ownerId the ID of the owner to display
* @return a ModelMap with the model attributes for the view * @return a ModelMap with the model attributes for the view
*/ */
@GetMapping("/owners/{ownerId}") @GetMapping("/owners/{ownerId}")
public ModelAndView showOwner(@PathVariable("ownerId") int ownerId) { public ModelAndView showOwner(@PathVariable("ownerId") int ownerId) {
ModelAndView mav = new ModelAndView("owners/ownerDetails"); ModelAndView mav = new ModelAndView("owners/ownerDetails");
Owner owner = this.owners.findById(ownerId); Owner owner = this.owners.findById(ownerId);
mav.addObject(owner); mav.addObject(owner);
return mav; return mav;
} }
// New method to delete an owner by ID
@PostMapping("/owners/{ownerId}/delete")
public String processDeleteOwner(@PathVariable("ownerId") int ownerId, RedirectAttributes redirectAttributes) {
this.owners.deleteById(ownerId);
redirectAttributes.addFlashAttribute("message", "Owner Deleted Successfully");
return "redirect:/owners";
}
// New method to search owners by first name
@GetMapping("/owners/findByFirstName")
public String processFindByFirstNameForm(@RequestParam(defaultValue = "1") int page, Owner owner, BindingResult result, Model model) {
// Allow parameterless GET request for /owners/findByFirstName to return all records
if (owner.getFirstName() == null) {
owner.setFirstName(""); // empty string signifies broadest possible search
}
// Use existing method to find owners by first name
Page<Owner> ownersResults = findPaginatedForOwnersFirstName(page, owner.getFirstName());
if (ownersResults.isEmpty()) {
// No owners found
result.rejectValue("firstName", "notFound", "not found");
return "owners/findOwners";
}
if (ownersResults.getTotalElements() == 1) {
// 1 owner found
owner = ownersResults.iterator().next();
return "redirect:/owners/" + owner.getId();
}
// Multiple owners found
return addPaginationModel(page, model, ownersResults);
}
// Helper method to paginate results for searching by first name
private Page<Owner> findPaginatedForOwnersFirstName(int page, String firstName) {
Pageable pageable = PageRequest.of(page - 1, 5); // Example page size of 5
return this.owners.findByFirstNameContaining(firstName, pageable); // Ensure this method exists in your repository
}
// Existing method to paginate owners by last name
private Page<Owner> findPaginatedForOwnersLastName(int page, String lastName) {
Pageable pageable = PageRequest.of(page - 1, 5); // Example page size of 5
return this.owners.findByLastNameContaining(lastName, pageable); // Ensure this method exists in your repository
}
} }