Question

我有一个.twig文件，其格式包含以下代码：

{% block section_contents %}

    <section id="main" class="aux manage signup clearfix">

            <div class="container welcome-back arvo-regular clearfix">
                Join the Mysite Community
            </div>

            <div class="container form-bg clearfix">
                <form class="content-form wrap" 
                action="{{ path('MysiteMainBundle_signup_additional_info') }}" 
                method="post" {{ form_enctype(additionalInfoForm) }} novalidate>>
                {% if formValid is defined %}
                        </br></br>
                        <div class="alert alert-block alert-error fade in">
                            <h4> Errors </h4>
                            {{ form_errors(settingsForm.firstName) }}
                            {{ form_errors(settingsForm.lastName) }}
                            {{ form_errors(settingsForm.address.addressOne) }}
                            {{ form_errors(settingsForm.email) }}
                            {{ form_errors(settingsForm.shop.name) }}
                            {{ form_errors(settingsForm) }}
                        </div>
                {% endif %}
                 <div class="personal-details">
                    <div class="text-line clearfix">
                        <div class="sub-header">
                            First Name
                        </div>

                       {{ form_widget(additionalInfoForm.firstName, { 'attr': {'class': 'validate[required] arvo-regular' } }) }}

                    </div>
                    <div class="text-line clearfix">
                        <div class="sub-header">
                            Last Name
                        </div>

                        {{ form_widget(additionalInfoForm.lastName, { 'attr': {'class': 'validate[required] arvo-regular' } }) }}

                    </div>

                    <input type="submit" value="Sign Up" class="arvo-regular button green signup-button" />

                 </div> <!-- end login details -->   
                </form>
            </div>

        </section>

{% endblock section_contents %}

但是当我提交这份表格时，我得到了：

   Fatal error: Cannot instantiate abstract class Mysite\MainBundle\Entity\Document in /Mysite/vendor/symfony/symfony/src/Symfony/Component/Form/Extension/Core/Type/FormType.php on line 172 Call Stack: 0.0011 659400 1. {main}() /Mysite/web/app_dev.php:0 0.0284 7412872 2. Symfony\Component\HttpKernel\Kernel->handle() /Mysite/web/app_dev.php:29 0.1012 13005672 3. Symfony\Bundle\FrameworkBundle\HttpKernel->handle() /Mysite/app/bootstrap.php.cache:619 0.1013 13007328 4. Symfony\Component\HttpKernel\HttpKernel->handle() /Mysite/app/bootstrap.php.cache:1568 0.1013 13007328 5. Symfony\Component\HttpKernel\HttpKernel->handleRaw() /Mysite/app/bootstrap.php.cache:1392 0.2212 28737544 6. call_user_func_array() /Mysite/app/bootstrap.php.cache:1428 0.2212 28738032 7. Mysite\MainBundle\Controller\SignupController->indexAction() /Mysite/app/bootstrap.php.cache:1428 0.2960 35454528 8. Symfony\Component\Form\Form->bind() /Mysite/src/Mysite/MainBundle/Controller/SignupController.php:49 0.2968 35509648 9. Symfony\Component\Form\Form->bind() /Mysite/vendor/symfony/symfony/src/Symfony/Component/Form/Form.php:539 0.2971 35517024 10. Symfony\Component\Form\Extension\Core\Type\{closure}() /Mysite/vendor/symfony/symfony/src/Symfony/Component/Form/Form.php:559

我不完全确定原因。它肯定与文档类有关。

编辑：

添加了一些表单代码：

class UserType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        switch ($options['mode']) {
            case 'login':
                $builder
                    ->add('email')
                    ->add('password')
                ;
                break;
            case 'shop_create':
                $builder
                    ->add('firstName', 'text')
                    ->add('lastName', 'text')
                    ->add('phone', 'text')
                    ->add('email', 'text')
                    ->add('address', new AddressType())
                    ->add('city', 'text')
                    ->add('state', 'text')
                    ->add('dni', 'text')
                    ->add('zipcode', 'text')
                    ->add('shop', new ShopType())
                ;
                break;
            case 'account_settings':
                $builder
                    ->add('profilePicture', new ProfilePictureFormType())
                    ->add('firstName', 'text')
                    ->add('lastName', 'text')
                    ->add('birthday', 'date', array('widget'=>'single_text'))
                    ->add('website', 'text')
                    ->add('biography', 'textarea')
                    ->add('email', 'text')
                    ->add('address', new AddressType())
                    ->add('shop', new ShopType())
                ;
                break;
            case 'additional_signup_info':
                $builder
                    ->add('profilePicture', new ProfilePictureFormType())
                    ->add('firstName', 'text')
                    ->add('lastName', 'text')
                    ->add('email', 'text')
                    ->add('address', new AddressType())
                    ->add('city', 'text')
                    ->add('state', 'text')
                    ->add('zipcode', 'text')
                    ->add('password')
                ;
                break;
            default:
                throw new \Exception('You need to select which type of user form type you want to use.');
                break;
        }
    }

这是控制器中的表单代码：

public function indexAction(Request $request)
    {    
        if ($request->hasSession()){
            $session = $request->getSession();
            $username = $session->get('username');
            $session->invalidate();
        } 

        $em = $this->getDoctrine()->getEntityManager();
        $userRepository = $em->getRepository('MysiteUserBundle:User');
        $user = $userRepository->findOneBy(array('username' => $username));

        $additionalInfoForm = $this->createForm(new UserType(), $user, array(
            'mode' => 'additional_signup_info'
        ));

        if ($request->isMethod('POST')) {
            $additionalInfoForm->bind($request);

            if ($additionalInfoForm->isValid()) {
                $em = $this->getDoctrine()->getEntityManager();
                $em->persist($user);
                $em->flush();
               return $this->redirect($this->generateUrl('MysiteMainBundle_marketplace'));

            }else{
                return array(
                        'formValid' => false,
                        'additionalInfoForm' => $additionalInfoForm->createView()
                    );
            }
        }

        return array('user' => $user, 'additionalInfoForm' => $additionalInfoForm->createView());
    }

Answer 1

问题在于php文件。确保您没有实例化抽象类，和/或实现接口的每个类都具有接口中声明的所有方法的定义。

Answer 2

问题发生在UserType课程中。由于@ArgumentNullException提到@adit忘记检查抽象类的实例化。

提交表单时无法实例化抽象类

2 个答案: