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StackOverflow 文件
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symfony3 教程
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驗證
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使用註釋進行 Symfony 驗證
- 使用
app/config/config.yml
檔案中的註釋啟用驗證
framework:
validation: { enable_annotations: true }
- 在
AppBundle/Entity
目錄中建立一個實體。驗證是使用 @Assert
註釋進行的。
<?php
# AppBundle/Entity/Car.php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* Car
*
* @ORM\Table(name="cars")
* @ORM\Entity(repositoryClass="AppBundle\Repository\CarRepository")
*/
class Car
{
/**
* @var int
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=50)
* @Assert\NotBlank(message="Please provide a name")
* @Assert\Length(
* min=3,
* max=50,
* minMessage="The name must be at least 3 characters long",
* maxMessage="The name cannot be longer than 50 characters"
* )
* @Assert\Regex(
* pattern="/^[A-Za-z]+$/",
* message="Only letters allowed"
* )
*/
private $name;
/**
* @var string
*
* @ORM\Column(name="number", type="integer")
* @Assert\NotBlank(message="Please provide a number")
* @Assert\Length(
* min=1,
* max=3,
* minMessage="The number field must contain at least one number",
* maxMessage="The number field must contain maximum 3 numbers"
* )
* @Assert\Regex(
* pattern="/^[0-9]+$/",
* message="Only numbers allowed"
* )
*/
private $number;
/**
* Get id
*
* @return int
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* @param string $name
*
* @return Car
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set number
*
* @param integer $number
*
* @return Car
*/
public function setNumber($number)
{
$this->number = $number;
return $this;
}
/**
* Get number
*
* @return integer
*/
public function getNumber()
{
return $this->number;
}
}
- 在
AppBundle/Form
目錄中建立一個新表單。
<?php
# AppBundle/Form/CarType.php
namespace AppBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\IntegerType;
class CarType extends AbstractType
{
/**
* @param FormBuilderInterface $builder
* @param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('name', TextType::class, ['label'=>'Name'])
->add('number', IntegerType::class, ['label'=>'Number'])
;
}
/**
* @param OptionsResolver $resolver
*/
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\Car'
));
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
// TODO: Implement setDefaultOptions() method.
}
public function getName()
{
return 'car_form';
}
}
- 在
AppBundle/Controller/DefaultController.php
中建立一個新路由和一個新的操作方法。路線也將使用註釋進行宣告,因此請確保已在主路徑檔案(app/config/routing.yml
)中匯入此路線。
<?php
namespace AppBundle\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;
use AppBundle\Entity\Car;
use AppBundle\Form\CarType;
class DefaultController extends Controller
{
/**
* @Route("/car", name="app_car")
*/
public function carAction(Request $request)
{
$car = new Car();
$form = $this->createForm(
CarType::class,
$car,
[
'action' => $this->generateUrl('app_car'),
'method'=>'POST',
'attr'=>[
'id'=>'form_car',
'class'=>'car_form'
]
]
);
$form->handleRequest($request);
return $this->render(
'AppBundle:Default:car.html.twig',[
'form'=>$form->createView()
]
);
}
}
- 在
AppBundle/Resources/views/Default/car.html.twig
中建立檢視。
{% extends '::base.html.twig' %}
{% block body %}
{{ form_start(form, {'attr': {'novalidate':'novalidate'}}) }}
{{ form_row(form.name) }}
{{ form_row(form.number) }}
<button type="submit">Go</button>
{{ form_end(form) }}
{% endblock %}
- 啟動 Symfony 的內建伺服器(
php bin/console server:run
)並在瀏覽器中訪問 127.0.0.1:8000/car
路由。應該有一個由兩個輸入框和一個提交按鈕組成的表單。如果按下提交按鈕而未在輸入框中輸入任何資料,則將顯示錯誤訊息。