如何在 Symfony 2 表单字段中设置默认值? [英] How to set a default value in a Symfony 2 form field?

问题描述

我一直在尝试使用 Symfony 2 设置表单.

I've been trying to set up a form with Symfony 2.

所以我遵循了教程，并为在控制器之外创建表单并处理验证过程(如文档中所示)

So I followed the tutorial and I've created a special class for creating the form and handling the validation process outside the controller (as shown in the documentation)

但现在我需要自动填写一个字段，我听说我必须在 ProductType.php 中填写，在那里创建表单(用于我的产品).

But now I need to fill in a field automatically, I've heard that I have to do it in the ProductType.php, where the form (for my product) is created.

但我不知道该怎么做，这是我在 ProductType.php 中的 buildForm 函数:

But I don't know how to do, here is my buildForm function in ProductType.php :

class QuotesType extends AbstractType
{
    private $id;

    public function __construct($id){
        $this->product_id = $id;
    }

    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder
            ->add('user_name',              'text')
            ->add('user_lastname',          'text')
            ->add('user_email',             'email')
            ->add('user_comments',          'textarea')
            ->add('user_product_id',        'hidden', array(
                'data' => $this->product_id,
            ));
        ;
    }

它显然不起作用，因为我收到一个 SQL 错误，说我的字段为空.

and it obviously doesnt work since I got a SQL error saying that my field is null.

如何为 user_product_id 设置默认值?我应该直接对对象做吗?

How can I put a default value to the user_product_id ? should I do it directly to the object ?

这是我的实体代码的一部分:

Here is a part of the code of my entity :

namespace QNMainBundleEntity;

use DoctrineORMMapping as ORM;
use SymfonyComponentValidatorConstraints as Assert;

/**
 * QNMainBundleEntityQuotes
 *
 * @ORMTable()
 * @ORMEntity(repositoryClass="QNMainBundleEntityQuotesRepository")
 */
class Quotes
{

    public function __construct($p_id)
    {
        $this->date = new Datetime('today');
    }
    /**
     * @var integer $id
     *
     * @ORMColumn(name="id", type="integer")
     * @ORMId
     * @ORMGeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var integer $user_product_id
     *
     * @ORMColumn(name="user_product_id", type="integer")
     */
    private $user_product_id = "1";

    /**
     * @var datetime $date
     *
     * @ORMColumn(name="date", type="datetime")
     */
    private $date;

还有我的控制器:

public function requestAction($id)
    {
        $repository = $this->getDoctrine()
                           ->getEntityManager()
                           ->getRepository('QNMainBundle:Categories');
    $categories = $repository->findAll();

    $quote = new Quotes($id);
    $form = $this->createForm(new QuotesType(), $quote);

    $formHandler = new QuotesHandler($form, $this->get('request'), $this->getDoctrine()->getEntityManager());

    if( $formHandler->process() )
    {
        return $this->redirect( $this->generateUrl('QNMain_Product', array('id' => $id)) );
    }

    return $this->render('QNMainBundle:Main:requestaform.html.twig', array(
        'categories' => $categories,
        'id' => $id,
        'form' => $form->createView(),
    ));

}

我的处理程序:

namespace QNMainBundleForm;

use SymfonyComponentFormForm;
use SymfonyComponentHttpFoundationRequest;
use DoctrineORMEntityManager;
use QNMainBundleEntityQuotes;

class QuotesHandler
{
    protected $form;
    protected $request;
    protected $em;

    public function __construct(Form $form, Request $request, EntityManager $em)
    {
        $this->form    = $form;
        $this->request = $request;
        $this->em      = $em;
    }

    public function process()
    {
        if( $this->request->getMethod() == 'POST' )
        {
            $this->form->bindRequest($this->request);

            if( $this->form->isValid() )
            {
                $this->onSuccess($this->form->getData());

                return true;
            }
        }

        return false;
    }

    public function onSuccess(Quotes $quote)
    {
        $this->em->persist($quote);
        $this->em->flush();
    }

}

我还把我尝试在实体中设置的 Date 放在这里，我可能在这两种情况下都做错了，因为我不能让它工作，也不能......日期不在buildForm 函数，我不知道我是否应该..

I've also put here the Date I try to set up in the entity, I might do something wrong in both case since I can't make it work neither ..Date is not in the buildForm function, I don't know if I should ..

推荐答案

你在这里试图做的是创建一个安全漏洞:任何人都可以在 user_product_id 字段中注入任何 ID并欺骗你的申请.更不用说渲染一个字段而不显示它是没用的.

What you're trying to do here is creating a security hole: anyone would be able to inject any ID in the user_product_id field and dupe you application. Not mentioning that it's useless to render a field and to not show it.

您可以在实体中为 user_product_id 设置默认值:

You can set a default value to user_product_id in your entity:

/**
 * @ORMAnnotations...
 */
private $user_product_id = 9000;

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