Php Symfony3新建和编辑控制器逻辑

在管理后端中，我希望提供以下功能：

用户应该能够使用简单的表单创建配方 用户可以查看表单中直接呈现的现有配方，因此可以进行更改并保存表单 我认为这是一项微不足道的任务。我创建了实体和表单类型，但对于控制器应该如何工作，我完全是空白

这是我的控制器：

<?php
declare(strict_types=1);

namespace App\Controller;

// use statements...

class RecipeController extends Controller
{
    /**
     * @Route("/admin/recipes", name="recipe_index")
     * @Method("GET")
     */
    public function indexAction(Request $request) : Response
    {
        // code to fetch paginated list of recipes
        // and render it
    }

    /**
     * @Route("/admin/recipes/new", name="recipe_new")
     * @Method("POST")
     */
    public function newAction(Request $request) : Response
    {
        $form = $this->createForm(RecipeType::class);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $recipe = $form->getData();
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->persist($recipe);
            $entityManager->flush();

            $this->addFlash(
                'success',
                'Recipe successfully added!');

            return $this->redirectToRoute('recipe_index');
        }

        return $this->render('Admin/recipe_form.html.twig', [
            'form' => $form->createView(),
        ]);
    }

    /**
     * @Route("/admin/recipes/{id}", name="recipe_detail")
     * @Method({"GET"})
     */
    public function editAction(Request $request, Recipe $recipe) : Response
    {
        $form = $this->createForm(RecipeType::class,$recipe);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {

            $recipe = $form->getData();
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->persist($recipe);
            $entityManager->flush();

            $this->addFlash(
                'success',
                'Recipe successfully updated!');

            return $this->redirectToRoute('recipe_index');
        }

        return $this->render('Admin/recipe_form_edit.html.twig', [
            'form' => $form->createView(),
            'recipe' => $recipe
        ]);
    }
}

这种方法存在几个问题：

create和update方法中的代码重复 对应的细枝模板中的代码重复

---

由于create和update表单没有区别，我想知道如何重用代码

我纠正了代码中的一些问题：更新表单时不需要持久化，编辑表单时不需要添加对象，表单已经有了数据。可以对两个视图使用相同的模板和表单

class RecipeController extends Controller
{
    /**
     * @Route("/admin/recipes", name="recipe_index")
     * @Method("GET")
     */
    public function indexAction(Request $request) : Response
    {
        // code to fetch paginated list of recipes
        // and render it

    }
/**
 * @Route("/admin/recipes/new", name="recipe_new")
 * @Method("POST")
 */
public function newAction(Request $request)
{

    $recipe = new Recipe();
    $form = $this->createForm(RecipeType::class, $recipe);

    if ($form->isSubmitted() && $form->handleRequest($request)->isValid()) {
        $entityManager = $this->getDoctrine()->getManager();
        $entityManager->persist($recipe);
        $entityManager->flush();

        $this->addFlash(
            'success',
            'Recipe successfully added!');

        return $this->redirectToRoute('recipe_index');
    }

    return $this->render('Admin/recipe_form.html.twig', [
        'form' => $form->createView(),
    ]);
}

/**
 * @Route("/admin/recipes/{id}", name="recipe_detail")
 * @Method({"GET"})
 */
public function editAction(Request $request, Recipe $recipe) : Response
{

    $form = $this->createForm(RecipeType::class,$recipe);

    if ($form->isSubmitted() && $form->handleRequest($request)->isValid()) {

        $entityManager = $this->getDoctrine()->getManager();
        // No need to persist, the object is already persisted, just flush
        $entityManager->flush();

        $this->addFlash(
            'success',
            'Recipe successfully updated!');

        return $this->redirectToRoute('recipe_index');
    }

// You don't need to use the recipe_form_edit, you can use the one you created above
    return $this->render('Admin/recipe_form.html.twig', [
// Form already has its values filled-in no need to add the entity
        'form' => $form->createView(),
    ]);
    }
}