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我是這個框架中的新實際這是我第一次使用框架 有人可以幫助我解決這個錯誤我不知道如何解決這個錯誤？這裏是我的代碼：錯誤 - 調用Yii框架中的null成員函數validatePassword（）
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;
}
}
我無法找出錯誤的確切原因。
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' => $username]);
}
}
你的密碼是空的，因此錯誤，檢查你傳遞的密碼是否有任何值或者沒有通過printin – Exprator
yes密碼值越來越var_dump（$ this-> password） –
@mdsaif要調用'validatePassword （）'爲null。例如，你有變量$ user，你期望它包含'User'模型，但它是空的。所以你應該找一個你得到用戶模型的地方，並檢查它是否爲空。 – SiZE