Symfony2验证日期时间1应早于日期时间2 - Symfony2 Validation Datetime 1 should be before Datetime 2

Symfony2 Validation Datetime 1 should be before Datetime 2

我正在查看Symfony2验证参考，但找不到我需要的内容。

我有一个类Employment，其开始日期为，结束日期为我想添加一个''''Assert((，它验证StartDate总是在EndDate之前。是否有将类属性作为验证约束进行比较的标准方法，或者我应该创建一个自定义验证约束？

class Employment {
    /**
    * @ORM'Id
    * @ORM'Column(type="integer")
    * @ORM'GeneratedValue(strategy="AUTO")
    * @Expose() 
    */
    protected $id;
    /**
    * @ORM'Column(type="datetime") 
    * @Expose()
    * @Assert'DateTime()
    */
    protected $startDate;
    /**
    * @ORM'Column(type="datetime", nullable=TRUE)
    * @Expose()
    * @Assert'DateTime()
    */
    protected $endDate;
...
}

您可以向实体添加一个验证getter-Symfony2 validation Getters

在您的验证中

Acme'YourBundle'Entity'Employment:
    getters:
        datesValid:
            - "True": { message: "The start date must be before the end date" }

然后在你的实体

public function isDatesValid()
{
    return ($this->startDate < $this->endDate);
}

还有另一个解决方案：使用表达式语言进行验证：

use Symfony'Component'Validator'Constraints as Assert;
/**
 * @ORM'Column(type="date", nullable=true)
 * @Assert'Date()
 */
private $startDate;
/**
 * @ORM'Column(type="date", nullable=true)
 * @Assert'Date()
 * @Assert'Expression(
 *     "this.getStartDate() < this.getEndDate()",
 *     message="The end date must be after the start date"
 * )
 */
private $endDate;

如果需要，可以将此约束添加到$startDate。

您可以编写一个自定义DateRangeValidator。

class DateRange extends Constraint {
    public $message = "daterange.violation.crossing";
    public $emptyStartDate = "daterange.violation.startDate";
    public $emptyEndDate = "daterange.violation.endDate";
    public $hasEndDate = true;
    public function getTargets() {
        return self::CLASS_CONSTRAINT;
    }
    public function validatedBy() {
        return 'daterange_validator';
    }
}
class DateRangeValidator extends ConstraintValidator
{
    public function isValid($entity, Constraint $constraint)
    {
        $hasEndDate = true;
        if ($constraint->hasEndDate !== null) {
            $hasEndDate = $constraint->hasEndDate;
        }
        if ($entity->getStartDate() !== null) {
            if ($hasEndDate) {
                if ($entity->getEndDate() !== null) {
                    if ($entity->getStartDate() > $entity->getEndDate()) {
                        $this->setMessage($constraint->message);
                        return false;
                    }
                    return true;
                } else {
                    $this->setMessage($constraint->emptyEndDate);
                    return false;
                }
            } else {
                if ($entity->getEndDate() !== null) {
                    if ($entity->getStartDate() > $entity->getEndDate()) {
                        $this->setMessage($constraint->message);
                        return false;
                    }
                }
                return true;
            }
        } else {
            $this->setMessage($constraint->emptyStartDate);
            return false;
        }
    }

将其注册为服务：

parameters:
    register.daterange.validator.class:     XXX'FormExtensionsBundle'Validator'Constraints'DateRangeValidator
services:
    daterange.validator:
        class: %register.daterange.validator.class%
        tags:
            - { name: validator.constraint_validator, alias: daterange_validator }

并在您的实体中使用它：

use XXX'FormExtensionsBundle'Validator'Constraints as FormAssert;
/**
 *
 * @FormAssert'DateRange()
 */
class Contact extends Entity
{
    private $startDate;
    private $endDate;
}

尽管这对于这样一件简单的事情来说似乎有点过分，但经验表明，一个人需要一个日期范围验证器的次数不止一次。