登录验证错误求解决 [ 新手入门 ]

报错:Table "user" does not have a column named "0".

这个是验证文件

<?php
class UserIdentity extends CUserIdentity
{
    public $email;
    public function __construct($email, $password)
    {
        $this->email = $email;
        $this->password = $password;
    }

	public function authenticate()
	{
        $user = User::model()->findByAttributes(array('email',$this->email));
        if(empty($user))
        {
            $this->errorCode=self::ERROR_USERNAME_INVALID;
        } else if($user->password = $user->encrypt($this->password) ) {
            $this->errorCode = self::ERROR_PASSWORD_INVALID;
        } else {
            $this->errorCode = self::ERROR_NONE;
        }

        return !$this->errorCode;
	}
}[/code]//loginForm.php 文件[code]<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel
{
	public $email;
	public $password;
	public $rememberMe;

	private $_identity;

	/**
	 * Declares the validation rules.
	 * The rules state that email and password are required,
	 * and password needs to be authenticated.
	 */
	public function rules()
	{
		return array(
			// email and password are required
			array('email, password', 'required'),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate'),
		);
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels()
	{
		return array(
			'rememberMe'=>'Remember me next time',
		);
	}

	/**
	 * Authenticates the password.
	 * This is the 'authenticate' validator as declared in rules().
	 */
	public function authenticate($attribute,$params)
	{
		if(!$this->hasErrors())
		{
			$this->_identity=new UserIdentity($this->email,$this->password);
			if(!$this->_identity->authenticate())
				$this->addError('password','Incorrect email or password.');
		}
	}

	/**
	 * Logs in the user using the given email and password in the model.
	 * @return boolean whether login is successful
	 */
	public function login()
	{
		if($this->_identity===null)
		{
			$this->_identity=new UserIdentity($this->email,$this->password);
			$this->_identity->authenticate();
		}
		if($this->_identity->errorCode===UserIdentity::ERROR_NONE)
		{
			$duration=$this->rememberMe ? 3600*24*30 : 0; // 30 days
			Yii::app()->user->login($this->_identity,$duration);
			return true;
		}
		else
			return false;
	}
}

//model/User.php user表的模型

<?php

/**
 * This is the model class for table "user".
 *
 * The followings are the available columns in table 'user':
 * @property integer $id
 * @property string $email
 * @property string $password
 * @property string $username
 *
 * The followings are the available model relations:
 * @property Article[] $articles
 */
class User extends CActiveRecord
{
	/**
	 * Returns the static model of the specified AR class.
	 * @param string $className active record class name.
	 * @return User the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}

	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return 'user';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array(
			array('email, password, username', 'required'),
			array('email, username', 'length', 'max'=>45),
			array('password', 'length', 'max'=>32),
			// The following rule is used by search().
			// Please remove those attributes that should not be searched.
			array('id, email, password, username', 'safe', 'on'=>'search'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations()
	{
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
			'articles' => array(self::HAS_MANY, 'Article', 'author_id'),
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		return array(
			'id' => 'ID',
			'email' => 'Email',
			'password' => 'Password',
			'username' => 'Username',
		);
	}

	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 * @return CActiveDataProvider the data provider that can return the models based on the search/filter conditions.
	 */
	public function search()
	{
		// Warning: Please modify the following code to remove attributes that
		// should not be searched.

		$criteria=new CDbCriteria;

		$criteria->compare('id',$this->id);
		$criteria->compare('email',$this->email,true);
		$criteria->compare('password',$this->password,true);
		$criteria->compare('username',$this->username,true);

		return new CActiveDataProvider($this, array(
			'criteria'=>$criteria,
		));
	}

    //验证成功之后的措施
    public function afterValidate()
    {
        parent::afterValidate();
        $this->password = $this->encrypt($this->password);
    }
    //加密措施
    public function encrypt($value)
    {
        return md5($value);
    }
}