ZF2 - 如何在现有控制器中添加新表单？

Question

我有一个登录表单LoginForm.php 及其过滤器LoginFilter.php，它有一个视图/login/index.phtml，一个控制器LoginController.php，两个工厂LoginControllerFactory.php 和LoginFormFactory.php，它在config.module.php 中被调用并且工作完美。表单已正确显示。

我有一个ViewController.php，它有一个idAction 方法，它通过id 在名为/view/id.phtml 的视图中通过参数从主页传递来显示帖子。我想显示我在这个视图中创建的这个表单，但我不知道如何。首先，我完全按照创建登录表单的方式创建了表单，但我意识到我已经在view 路由内部配置了id 子路由，并在module.config.php 中使用了工厂。

然后，我尝试在idAction 方法中设置表单，就像我在LoginController.php 控制器中的indexAction 中所做的那样，但我收到以下错误：An exception was raised while creating "Rxe\Factory\ViewController"; no instance returned。

我现在将向您展示我为显示这个新表单所做的工作。

首先，表单本身：

class CommentForm extends Form
{
    public function buildForm()
    {
        $this->setAttribute('method', 'POST');
        $this->setAttribute('id', 'add-comment-form');
        $this->add(array(
            'name' => 'comment',
            'type' => 'textarea',
            'options' => array(
                'label' => 'Category'
            ),
            'attributes' => array(
                'class' => 'form-control'
            )
        ));

        $this->add(array(
            'name' => 'submit',
            'type' => 'submit',
            'attributes' => array(
                'class' => 'btn btn-success',
                'value' => 'Comment'
            )
        ));
    }
}

Form 的 CommentFormFactory.php 调用其过滤器并构建表单：

class CommentFormFactory implements FactoryInterface
{
    public function createService(ServiceLocatorInterface $serviceLocator)
    {
        $form = new CommentForm();
        $form->setInputFilter($serviceLocator->get('Rxe\Factory\CommentFilter'));
        $form->buildForm();

        return $form;
    }
}

ViewControllerFactory.php 调用CommentFormFactory.php，就像在LoginControllerFactory.php 中一样：

class ViewControllerFactory implements FactoryInterface
{
    public function createService(ServiceLocatorInterface $serviceLocator)
    {
        $serviceManager = $serviceLocator->getServiceLocator();

        $viewController = new ViewController();
        $viewController->setPostsTable($serviceManager->get('Rxe\Factory\PostsTable'));
        $viewController->setCommentsTable($serviceManager->get('Rxe\Factory\CommentsTable'));
        $viewController->setCommentForm($serviceManager->get('Rxe\Factory\CommentForm'));

        return $viewController;
    }
}

ViewController.php，在其idAction 的ViewModel 中调用表单：

class ViewController extends AbstractActionController
{
    use PostsTableTrait;
    use CommentsTableTrait;

    private $commentForm;

    function setCommentForm($commentForm)
    {
        $this->commentForm = $commentForm;
    }

    public function indexAction()
    {
        $category = $this->params()->fromRoute('category');

        return new ViewModel(array(
            'posts' => $this->postsTable->getPostsByCategory($category),
            'categories' => $category
        ));
    }

    public function idAction()
    {
        $id = $this->params()->fromRoute('id');

        $viewModel = new ViewModel(array(
            'commentForm' => $this->commentForm,
            'commentParams' => $this->params()->fromPost(),
            'messages' => $this->flashMessenger()->getMessages(),
            'posts' => $this->postsTable->getPostById($id),
            'posts' => $this->commentsTable->getNumberOfCommentsByPost($id),
            'comments' => $this->commentsTable->getCommentsByPost($id)
        ));
        $viewModel->setTemplate('rxe/view/id.phtml');

        if ($this->getRequest()->isPost()) {
            $this->commentForm->setData($this->params()->fromPost());

            if ($this->commentForm->isValid()) {
                $this->flashMessenger()->addMessage('Thank you for your comment. :)');
            } else {
                $this->flashMessenger()->addMessage('Your comment wasn\'t sent.');
            }
        }

        return $viewModel;
    }
}

最后是我的module.config.php

'controllers' => array(
    'invokables' => array(
        'Rxe\Controller\Index' => 'Rxe\Controller\IndexController',
        'Rxe\Controller\View' => 'Rxe\Controller\ViewController',
        'Rxe\Controller\Login' => 'Rxe\Controller\LoginController'
    ),
    'factories' => array(
        'Rxe\Factory\LoginController' => 'Rxe\Factory\LoginControllerFactory',
        'Rxe\Factory\ViewController' => 'Rxe\Factory\ViewControllerFactory',
        'Rxe\Factory\IndexController' => 'Rxe\Factory\IndexControllerFactory'
    )
),
'service_manager' => array(
    'factories' => array(
        'Rxe\Factory\LoginForm' => 'Rxe\Factory\LoginFormFactory',
        'Rxe\Factory\LoginFilter' => 'Rxe\Factory\LoginFilterFactory',
        'Rxe\Factory\CommentForm' => 'Rxe\Factory\CommentFormFactory',
        'Rxe\Factory\CommentFilter' => 'Rxe\Factory\CommentFilterFactory',
        'Rxe\Factory\PostsTable' => 'Rxe\Factory\PostsTableFactory',
        'Rxe\Factory\CategoriesTable' => 'Rxe\Factory\CategoriesTableFactory',
        'Rxe\Factory\CommentsTable' => 'Rxe\Factory\CommentsTableFactory',
        'Zend\Db\Adapter\AdapterService' => 'Zend\Db\Adapter\AdapterServiceFactory'
    )
),

如果您需要我向您展示更多代码，请告诉我。提前谢谢你。

编辑#1

如果我删除ViewControllerFactory.php 中调用表单的行，我会收到以下错误：Fatal error: Call to a member function prepare() on a non-object in /home/vol12_3/byethost4.com/b4_16354889/htdocs/module/Rxe/view/rxe/view/id.phtml on line 31

id.phtml 是：

<!-- Comment form -->
<div id="comment-form-area" class="col-xs-3">
    <?php $this->commentForm->prepare() ?>
    <?php echo $this->form()->openTag($this->commentForm); ?>
    <div class="form-group comment-area">
        <?php echo $this->formRow($this->commentForm->get('comment_content')); ?>
    </div>
    <div class="form-group">
        <?php echo $this->formRow($this->commentForm->get('submit')); ?>
    </div>
    <?php echo $this->form()->closeTag(); ?>
</div>
<!-- /Comment form -->

Answer 1

尝试删除这些行

'invokables' => array(
    'Rxe\Controller\Index' => 'Rxe\Controller\IndexController',
    'Rxe\Controller\View' => 'Rxe\Controller\ViewController',
    'Rxe\Controller\Login' => 'Rxe\Controller\LoginController'
),

如果它不起作用，请查看本教程如何创建适当的控制器工厂并传递依赖项。 https://samsonasik.wordpress.com/2015/03/31/zend-framework-2-using-__invokepluginmanager-manager-in-services-factory/

我如何构建表单的示例：

namespace Admin\Form;

use Zend\Form\Form;
use Zend\InputFilter\InputFilterProviderInterface;

class ContentForm extends Form implements InputFilterProviderInterface
{
    public function __construct()
    {
        parent::__construct("content");
    }

    public function init()
    {
        $this->setAttribute('method', 'post');

        $this->add([
            'type' => 'Zend\Form\Element\Text',
            'name' => 'title',
            'attributes' => [
                'required'   => true,
                'size'        => 40,
                'id'         => "seo-caption",
                'placeholder' => 'Title',
            ],
            'options' => [
                'label' => 'Title',
            ],
        ]);

        $this->add([
            'type' => 'Zend\Form\Element\Text',
            'name' => 'text',
            'attributes' => [
                'class'   => 'ckeditor',
                'rows'        => 5,
                'cols'      => 80,
            ],
            'options' => [
                'label' => 'Text',
            ],
        ]);

    }

    public function getInputFilterSpecification()
    {
        return [
            [
                "name"=>"title",
                "required" => true,
                'filters' => [
                    ['name' => 'StripTags'],
                    ['name' => 'StringTrim'],
                ],
                'validators' => [
                    ['name' => 'NotEmpty'],
                    [
                        'name'    => 'StringLength',
                        'options' => [
                            'encoding' => 'UTF-8',
                            'min' => 1,
                            'max' => 200,
                        ],
                    ],
                ],
            ],
            [
                "name"=>"text",
                "required" => true,
                'filters' => [
                    ['name' => 'StripTags'],
                    ['name' => 'StringTrim'],
                ],
                'validators' => [
                    ['name' => 'NotEmpty'],
                    [
                        'name'    => 'StringLength',
                        'options' => [
                            'encoding' => 'UTF-8',
                            'min' => 1,
                        ],
                    ],
                ],
            ],
        ];
    }
}

比我创建一个工厂 命名空间管理员\工厂\控制器；

use Admin\Controller\ContentController;
use Zend\Mvc\Controller\ControllerManager;

class ContentFormFactory
{
    /**
     * @{inheritDoc}
     */
    public function __invoke(ControllerManager $controllerManager)
    {
        return new ContentController(
            $controllerManager->getServiceLocator()->get('FormElementManager')->get('Admin\Form\ContentForm')
        );
    }
}

在 module.config.php 里面我有这段代码

'controllers' => [
    'factories' => [
        'Admin\Controller\Content' => "Admin\Factory\Controller\ContentFormFactory",
    ],
    'invokables' => [
        ...
    ],
],

请给我们看更多代码。