Question

我是这个框架中的新手，实际上这是我第一次使用框架有人可以帮助我解决这个错误我不知道如何解决这个错误？这是我的代码：

  The problem- Call to a member function validatePassword() on null

the actual problem I am getting here
public function validatePassword($attribute, $params)
    {
//in loginForm.php file model

loginForm.php model
    namespace app\models;

    use Yii;
    use yii\base\Model;

    /**
     * LoginForm is the model behind the login form.
     *
     * @property User|null $user This property is read-only.
     *
     */
    class LoginForm extends Model
    {
        public $username;
        public $password;
        public $rememberMe = true;

        private $_user = false;


        /**
         * @return array the validation rules.
         */
        public function rules()
        {
            return [
                // username and password are both required
                [['username', 'password'], 'required'],
                // rememberMe must be a boolean value
                ['rememberMe', 'boolean'],
                // password is validated by validatePassword()
                ['password', 'validatePassword'],
            ];
        }

        /**
         * 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();

                echo"<pre>";


                if (!$user || !$user->validatePassword($this->password)) {
                    $this->addError($attribute, 'Incorrect username or password.');
                }
            }
        }

        /**
         * Logs in a user using the provided username and password.
         * @return bool whether the user is logged in successfully
         */
        public function login()
        {
            if ($this->validate()) {
                return Yii::$app->user->login($this->getUser(), $this->rememberMe ? 3600*24*30 : 0);
            }
            return false;
        }

        /**
         * Finds user by [[username]]
         *
         * @return User|null
         */
        public function getUser()
        {
            if ($this->_user === false) {
                $this->_user = User::findByUsername($this->username);
            }

            return $this->_user;
        }


    }

我无法找出错误的确切原因。

    this is user.php model file

    <?php

    namespace app\models;

    class User extends \yii\base\Object implements \yii\web\IdentityInterface
    {
        public $id;
        public $username;
        public $password;
        public $admin_email;
        public $authKey;
        public $accessToken;

    public static function tableName()
        {
            return 'admin_info';
        }

        /**
         * @inheritdoc
         */
        public function rules()
        {
            return [
                #[['username', 'admin_email', 'password'], 'required'],
                [['username','password'],'required'],
                [['username', 'password'], 'string', 'max' => 20],
                [['admin_email'], 'string', 'max' => 50],
                ['admin_email','email'],
                ['password','password'],

            ];
        }

        /**
         * @inheritdoc
         */
        public function attributeLabels()
        {
            return [
                'admin_id' => 'Admin ID',
                'username' => 'Username',
                'admin_email' => 'Admin Email',
                'password' => 'Password',

            ];
        }


        /**
         * @inheritdoc
         */
        public static function findIdentity($id)
        {
            return isset(self::$users[$id]) ? new static(self::$users[$id]) : null;
        }

        /**
         * @inheritdoc
         */
        public static function findIdentityByAccessToken($token, $type = null)
        {
            foreach (self::$users as $user) {
                if ($user['accessToken'] === $token) {
                    return new static($user);
                }
            }

            return null;
        }

        /**
         * Finds user by username
         *
         * @param string $username
         * @return static|null
         */
        public static function findByUsername($username)
        {
            foreach (self::$users as $user) {
                if (strcasecmp($user['username'], $username) === 0) {
                    return new static($user);
                }
            }

            return null;
        }

        /**
         * @inheritdoc
         */
        public function getId()
        {
            return $this->id;
        }

        /**
         * @inheritdoc
         */
        public function getAuthKey()
        {
            return $this->authKey;
        }

        /**
         * @inheritdoc
         */
        public function validateAuthKey($authKey)
        {
            return $this->authKey === $authKey;
        }

        /**
         * Validates password
         *
         * @param string $password password to validate
         * @return bool if password provided is valid for current user
         */
        public function validatePassword($password)
        {
            return $this->password === $password;
        }

          public static function findByUsername($username){

            return static::findOne(['username' => $username]);
        }

    }

Answer 1

Yii2有一个出色的调试器，但你必须在开发环境中才能从命令行使用它，所以cd到项目的根运行php init-dev。

无论是在您的控制器中，还是在loginForm.php中暂时放置

validatePassword（）函数中的

Yii::info('password is:' . $this->passwrod);可确保您获得预期的输出。

现在尝试登录并查看日志以获取关键信息：

如果没有，可以在以前的接触点添加更多信息记录。

请记住，不要在生产环境中使用debug并删除调试代码。

错误 - 在Yii框架中调用null上的成员函数validatePassword（）

1 个答案: