尝试在Symfony2中使用嵌入式表单时出错 [英] Error when trying to use embedded forms in Symfony2

问题描述

我正在尝试嵌入如下所示的表单集合- http://symfony. com/doc/current/cookbook/form/form_collections.html

I'm trying to Embed a Collection of Forms just as shown here - http://symfony.com/doc/current/cookbook/form/form_collections.html

我几乎从那里重写了代码，但是遇到了两个问题:

I almost rewrite the code from there but I met two problems:

1. FatalErrorException: Compile Error: Declaration of MyBundle\Form\Type\ExpenseType::setDefaultOptions() must be compatible with that of Symfony\Component\Form\FormTypeInterface::setDefaultOptions() in MyBundle\Form\Type\ExpenseType.php line 33

form_start()函数不存在.

form_start() function doesn't exist.

您对如何解决第一个问题有任何想法吗?没有任何帮助:(

Do you have any ideas how to solve the first problem? Nothing helps :(

P.S.我没有添加任何代码，因为它与书中的代码相同，只是更改了名称(或者至少我认为是这样)，如有需要，我将添加任何代码.

P.S. I'm not adding any code, because it's the same as in the book, I only changed the names (or at least I think so), I'll add any code if needed.

ExpenseType.php

<?php

namespace MyBundle\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;

class ExpenseType extends AbstractType
{   
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('name', 'text',array(
            'label'  => ' '));

        $builder->add('description', 'textarea',array(
            'label'  => ' '));

        $builder->add('expenseVariants', 'collection', array('type' => new ExpenseVairantType()));

    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'MyBundle\Entity\Expense',
        ));
    }

    public function getName()
    {
        return 'expense';
    }
} 

推荐答案

您丢失了

use Symfony\Component\OptionsResolver\OptionsResolverInterface;

从您的进口.

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