如何在symfony 2 php中訪問注釋中的類變量和常量

Question

我有一個這樣的課：

class Student {

const GENDER_MALE = "male", GENDER_FEMALE = "female";
/**
 * @var string $gender
 *
 * @ORM\Column(name="gender", type="string", length=50,nullable=false)
 * @Assert\NotBlank(message="Gender cannot be blank",groups={"new"})
 * @Assert\Choice(choices = {"male", "female"}, message = "Choose a valid gender.", groups={"new"})
 */
private $gender;

我必須硬編碼"male"和"female" 。 可以這樣做嗎？

choices = {self :: GENDER_MALE，self :: GENDER_FEMALE}

Answer 1

這是Doctrine2 Annotation Reader（常量）的一個功能。

你解決方案：

class Student
{
    const GENDER_MALE = "male", GENDER_FEMALE = "female";

    /**
     * @var string $gender
     *
     * @ORM\Column(name="gender", type="string", length=50,nullable=false)
     * @Assert\NotBlank(message="Gender cannot be blank",groups={"new"})
     * @Assert\Choice(
     *      choices = {
     *          Student::GENDER_FEMALE: "Female",
     *          Student::GENDER_MALE: "Male"
     *      },
     *      message = "Choose a valid gender.", groups={"new"}
     * )
     */
    private $gender;
}