Yii2:ActiveForm字段数字,长度=> 8

Question

我正在尝试使yii2验证我的ActiveForm字段,该字段应为数字且长度为8个字符.

以下是我在默认LoginForm模型中尝试过的yii2/advanced/backend,但不幸的是isNumeric验证器根本没有启动:

public function rules()
{
    return [
        // username and password are both required
        [['username', 'password'], 'required'],
        // username should be numeric
        ['username', 'isNumeric'],
        // username should be numeric
        ['username', 'string', 'length'=>8],
        // password is validated by validatePassword()
        ['password', 'validatePassword'],
    ];
}

/**
 * Validates if the username is numeric.
 * This method serves as the inline validation for username.
 *
 * @param string $attribute the attribute currently being validated
 * @param array $params the additional name-value pairs given in the rule
 */
public function isNumeric($attribute, $params)
{
    if (!is_numeric($this->username))
        $this->addError($attribute, Yii::t('app', '{attribute} must be numeric', ['{attribute}'=>$attribute]));
}

/**
 * Validates the password.
 * This method serves as the inline validation for password.
 *
 * @param string $attribute the attribute currently being validated
 * @param array $params the additional name-value pairs given in the rule
 */
public function validatePassword($attribute, $params)
{
    if (!$this->hasErrors()) {
        $user = $this->getUser();
        if (!$user || !$user->validatePassword($this->password)) {
            $this->addError($attribute, 'Incorrect username or password.');
        }
    }
}

我还尝试添加一个相关帖子(/sf/answers/1947205501/)中建议的场景,但只有password在场景中不包含该字段时才会起作用(如显示错误).

这是实现这一目标的好方法,还是你能想到更好的方法吗？

注:我定义的原因username是string是因为数字可能包含前导0.

Answer 1

尝试使用integer数据类型:

[['username'], 'integer'],
[['username'], 'string', 'min' => 8],

它将验证两者numeric和length.这样就可以了.

Answer 2

在此处阅读有关验证的更多信息:http://www.yiiframework.com/doc-2.0/guide-tutorial-core-validators.html#number

这对我使用yii2-basic的联系表格很好

/**
 * @return array the validation rules.
 */
public function rules()
{
    return [
        // name, email, subject and body are required
        [['name', 'email', 'subject', 'body'], 'required'],
        // email has to be a valid email address
        ['email', 'email'],
        ['subject', 'is8NumbersOnly'],
        // verifyCode needs to be entered correctly
        ['verifyCode', 'captcha'],
    ];
}

public function is8NumbersOnly($attribute)
{
    if (!preg_match('/^[0-9]{8}$/', $this->$attribute)) {
        $this->addError($attribute, 'must contain exactly 8 digits.');
    }
}