php - Yii2:ActiveForm 字段数字，长度 => 8

Question

我正在尝试让 yii2 验证我的 ActiveForm 字段，该字段应该是数字且长度为 8 个字符。

以下是我在 yii2/advanced/backend 的默认 LoginForm 模型中尝试的，但不幸的是 isNumeric 验证器根本没有开始:

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.');
        }
    }
}

我还尝试按照相关帖子 ( https://stackoverflow.com/a/27817221/2037924 ) 中的建议添加场景，但如果我没有在场景中包含 password 字段，那只会起作用(如显示错误)。

这是实现这一目标的好方法，还是您能想出更好的方法？

注意:我将 username 定义为 string 的原因是数字可能包含前导 0。

Answer 1

尝试使用 integer 数据类型:

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

它将验证numeric 和length。这将达到目的。