controller.EditCarController.java Source code

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Here is the source code for controller.EditCarController.java

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package controller;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.Errors;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import static org.springframework.web.bind.annotation.RequestMethod.GET;
import static org.springframework.web.bind.annotation.RequestMethod.POST;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import model.GenericProduct;

/**
 *
 * @author Merijn
 * Wijzigen van product entries. 
 */
@Controller
public class EditCarController {

    @Autowired
    dao.GenericDAO dao;

    @RequestMapping(value = "editproduct/car/{id}", method = GET) //betreffende productgegevens ophalen
    public String showProductEdit(@PathVariable String id, Model model) {
        model.addAttribute(dao.findProductById(Long.parseLong(id), model.Car.class));

        return "editCar";
    }

    @RequestMapping(value = "editproduct/car/{id}", method = POST) //de form input wordt getoets aan de Product velden, bij fouten terug naar het formulier
    public String processProductEdit(@PathVariable String id, @Valid model.Car product, Errors errors,
            RedirectAttributes model) { //RedirectAttributes zijn nodig om de gebruiker ook na redirect te onthouden
        if (errors.hasErrors() || errors == null) {
            return "editCar";
        } else {
            dao.saveProduct(product); //product updaten met formdata
            model.addFlashAttribute("product", product); //maakt tijdelijke sessie aan voor onthouden product voorbij redirect
            return "redirect:/productEditResult/car/" + product.getId();
        }
    }

    @RequestMapping(value = "productEditResult/car/{id}", method = GET)
    public String showChange(@PathVariable String producttype, @PathVariable String id, Model model) {
        if (!model.containsAttribute("id")) { //failsafe voor als Flashattribute toch niet blijkt te werken. Dan opnieuw gebruiker opzoeken via URL path variable 'id'
            System.out.println("Geen product in model");
            model.addAttribute(dao.findProductById(Long.parseLong(id), model.Car.class));
        }
        return "editCarResult";
    }
}