Authorization by login without a password?

Question

Yii

Hello.
How to make authorization by login without password in yii2.
user

public static function findByUsername($username)
    {
        return static::findOne(['username' => $username, 'status' => self::STATUS_ACTIVE]);
    }

Login

class Login extends Model
{
    public $username;
    //public $password;
    //public $rememberMe = true;
    public $status;

    private $_user = false;

    public function rules()
    {
        return [
            [['username'], 'required', 'on' => 'default'],
            //['rememberMe', 'boolean'],
            //['password', 'validatePassword']
        ];
    }

    /**
     * @param $attribute
     */
public function validatePassword($attribute, $params)
    {
        if (!$this->hasErrors()) {
            $user = $this->getUser();
            if (!$user || !$user->validatePassword($this->password)) {
                $this->addError($attribute, 'Incorrect username or password.');
            }
        }
    }

    public function getUser()
    {
        if ($this->_user === false) {
            $this->_user = User::findByUsername($this->username);
        }
        return $this->_user;
    }

    /**
     * @return array
     */
    public function attributeLabels()
    {
        return [
            'username' => 'Почта',
        ];
    }

    /**
     * @return bool
     */
    public function login()
    {
        if ($this->validate()) {
            $this->status = ($user = $this->getUser()) ? $user->status : User::STATUS_NOT_ACTIVE;
            if ($this->status === User::STATUS_ACTIVE) {
                return Yii::$app->user->login($user, $this->rememberMe ? 3600 * 24 * 30 : 0);
            } else {
                return false;
            }
        } else {
            return false;
        }
    }
}

view login

<?php $form = ActiveForm::begin([
        'id' => 'login-form',
        'layout' => 'horizontal',
        'fieldConfig' => [
            'template' => "{label}\n<div class=\"col-lg-3\">{input}</div>\n<div class=\"col-lg-8\">{error}</div>",
            'labelOptions' => ['class' => 'col-lg-1 control-label'],
        ],
    ]); ?>

    <?= $form->field($model, 'username')->textInput(['autofocus' => true]) ?>
    <?php // $form->field($model, 'password')->passwordInput() ?>

    <div class="form-group">
        <div class="col-lg-offset-1 col-lg-11">
            <?= Html::submitButton('Авторизация', ['class' => 'btn btn-primary', 'name' => 'login-button']) ?>
        </div>
    </div>

    <?php ActiveForm::end(); ?>

Answer 1

Replace

public function validatePassword($attribute, $params)
    {
        if (!$this->hasErrors()) {
            $user = $this->getUser();
            if (!$user || !$user->validatePassword($this->password)) {
                $this->addError($attribute, 'Incorrect username or password.');
            }
        }
    }

On
public function validatePassword($attribute, $params)
{
return true;
}