validation annotation.

validationannotation.php

    /**
     * @var string
     *
     * @ORM\Column(name="firstname", type="string", length=45, nullable=true)
     * @Assert\Length(
     *      min = 2,
     *      max = 45,
     *      minMessage = "user.form.validation.firstname.min",
     *      maxMessage = "user.form.validation.firstname.max",
     *      groups = {"personal_info"}
     * )
     * @Assert\NotBlank(
     *      message = "user.form.validation.firstname.blank",
     *      groups = {"personal_info"}
     * )
     * @Assert\Regex(
     *      pattern="/^[a-zA-ZàáâäãåąčćęèéêëėįìíîïłńòóôöõøùúûüųūÿýżźñçčšžÀÁÂÄÃÅĄĆČĖĘÈÉÊËÌÍÎÏĮŁŃÒÓÔÖÕØÙÚÛÜŲŪŸÝŻŹÑßÇŒÆČŠŽ∂ð']+$/u",
     *      match=true,
     *      message="user.form.validation.firstname.regex",
     *      groups = {"personal_info"}
     * )
     */
    private $firstname;