authentication - Yii2 Login from DB (Setting unknown property: app\models\User::password_hash) -

i want user authentication in yii based on user table in database. user model:

<?php  namespace app\models;  use yii; use yii\base\notsupportedexception; use yii\db\activerecord; use yii\helpers\security; use yii\web\identityinterface;   /**  * model class table "user".  *  * @property integer $id  * @property string $username  * @property string $password  * @property string $title  */ class user extends \yii\db\activerecord implements identityinterface {       public static function tablename()     {         return 'user';     }        /**      * @inheritdoc      */      public function rules()     {         return [             [['username', 'password'], 'required'],              [['username', 'password'], 'string', 'max' => 100]                     ];     }        /**      * @inheritdoc  */      public function attributelabels()     {         return [             'id' => 'userid',             'username' => 'username',             'password' => 'password',          ];      }         public static function findidentity($id) {          return static::findone($id);     }      public static function findidentitybyaccesstoken($token, $type = null) {         return static::findone(['access_token' => $token]);     }      public static function findbyusername ($username){          return static::findone(['username' => $username]);      }     public static function findbypasswordresettoken($token)     {         $expire= \yii::$app->params['user.passwordresettokenexpire'];         $parts = explode('_', $token);         $timestamp = (int) end($parts);         if ($timestamp + $expire < time()) {             //token expired             return null;          }         return static::findone(['password_reset_token' => $token ]);       }      public function getid() {         return $this->getprimarykey();     }      public function getauthkey() {         return $this->auth_key;     }      public function validateauthkey($authkey) {         return $this->getauthkey() === $authkey;     }      public function validatepassword($password){         $this->password_hash= yii::$app->security->generatepasswordhash ($password);     }     public function generateauthkey()     {         $this->auth_key = yii::$app->security->generaterandomkey();     }      /**      * generates new password reset token      */     public function generatepasswordresettoken()     {         $this->password_reset_token = yii::$app->security->generaterandomkey() . '_' . time();     }      /**      * removes password reset token      */     public function removepasswordresettoken()     {         $this->password_reset_token = null;     }    } 

but giving me error when try login:

setting unknown property: app\models\user::password_hash

this actionlogin in sitecontroller:

public function actionlogin()     {         if (!\yii::$app->user->isguest) {             return $this->gohome();         }          $model = new loginform();         if ($model->load(yii::$app->request->post()) && $model->login()) {             return $this->goback();         } else {             return $this->render('login', [                 'model' => $model,             ]);         }     } 

and code in loginform.php:

  public function validatepassword($attribute, $params)     {         if (!$this->haserrors()) {             $user = $this->getuser();              if (!$user || !$user->validatepassword($this->password)) {                 $this->adderror($attribute, 'incorrect username or password.');             }         } }  /**  * logs in user using provided username , password.  * @return boolean whether user logged in  */ public function login() {     if ($this->validate()) {         return yii::$app->user->login($this->getuser(), $this->rememberme ? 3600*24*30 : 0);     } else {         return false;     } } 

i don't know wrong, please me fix this?

this because column "password_hash" assigned in function "validatepassword()" doesn't exist in database or not declared in user model.

if password hash stored in database in "password" field, change "validatepassword()" to,

public function validatepassword($password) {     return $this->password === yii::$app->security->generatepasswordhash ($password); }