Chapter 3 problem

[istanbuls]

I read until page 66. There was

Even though you’ve only developed a repository for ingredient data, you can fire up the Taco Cloud application at this point and visit the design page to see JdbcIngredientRepository in action. Go ahead ... give it a try.

I give it a try and I failed.

I was following everything from the book. I see that my issue is in DesignTacoController, but I don't know how to solve it yet

I'm coding in Intellij Ultimate 2018.3

My code:

package tacos.web;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

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.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import tacos.Ingredient;
import tacos.Ingredient.Type;
import tacos.Taco;
import tacos.data.IngredientRepository;

@Controller
@RequestMapping("/design")
public class DesignTacoController {

    private final IngredientRepository ingredientRepo;

    @Autowired
    public DesignTacoController(IngredientRepository ingredientRepo) {
        this.ingredientRepo = ingredientRepo;
    }

  @GetMapping
  public String showDesignForm(Model model) {
        List<Ingredient> ingredients = new ArrayList<>();
        ingredientRepo.findAll().forEach(i -> ingredients.add(i));

        Type[] types = Ingredient.Type.values();
        for(Type type : types){
            model.addAttribute(type.toString().toLowerCase(),
                            filterByType(ingredients, type));
        }

    return "design";
  }

  @PostMapping
  public String processDesign(@Valid @ModelAttribute("design") Taco design, Errors errors, Model model) {
    if (errors.hasErrors()) {
      return "design";
    }
    return "redirect:/orders/current";
  }

  private List<Ingredient> filterByType(
      List<Ingredient> ingredients, Type type) {
    return ingredients
              .stream()
              .filter(x -> x.getType().equals(type))
              .collect(Collectors.toList());
  }

}

[mghildiy]

You need to add following:

model.addAttribute("design", new Taco());

...just before return statement in showDesignForm method.