Yii validation of a specific field - php

Question

problem defenition
i have one model called 'user.php'
i have some validation rules on the same as follows
i am now going to create a password reset form
in that form i have a text box name email (same email used in user model)
in password reset form i would like to check wheather this user is a registered one if it a registered one will send the password reset link
I DONT KNOW HOW TO VAIDATE THIS EMAIL FIELD , ANY HELP HIGHLY APPRECIABLE AS I AM NEW IN YII
user.php
class Users extends CActiveRecord
{
public $cpassword;
public static function model($className=__CLASS__)
{
return parent::model($className);
}
public function tableName()
{
return 'users';
}
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('email, password, user_type , cpassword','required'),
array('email', 'length', 'max'=>200),
array('email', 'unique'),
array('email', 'email'),
array('password', 'length', 'max'=>300),
array('cpassword', 'length', 'max'=>300),
array('user_type', 'length', 'max'=>5),
array('cpassword', 'compare', 'compareAttribute' => 'password'),
// The following rule is used by search().
// Please remove those attributes that should not be searched.
array('id, email, password, user_type ', 'safe', 'on'=>'search'),
);
}
public function relations()
{
return array(
);
}
public function attributeLabels()
{
return array(
'id' => 'ID',
'email' => 'Email',
'password' => 'Password',
'user_type' => 'User Type',
'cpassword' => 'Confirm Password'
);
}
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);
$criteria->compare('user_type',$this->user_type,true);
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
));
}
public function beforesave()
{
$this->password=md5($this->password);
return true;
}
}

Answer 1

You can check on the submit with something like:
$user = User::model()->find("email = '".trim($model->email)."'");
if (!empty($user)){
// users exists
} else {
// user does not exist
}
If you really want to use the model, you can setup a rule where email must be unique like so:
array('email', 'unique', 'message' => 'Email already in use'),
You can then check if the model validates on the submit, specifically the email field. If it doesnt validate the email address exists
Last, you can validate a single model attribute like so:
if($model->validate(array('attribute_name'))
// valid
}
Here is one way of doing the complete action (not the best way but the easiest to understand!)
public function actionResetpassword(){
$model = new User;
if(isset($_POST['User'])){
$model->attributes = $_POST['User']; // this is the form as completed by the user
$user = User::model()->find("email = '".trim($model->email)."'");
if (!empty($user)){
// send user their new email
$this->render("passwordreset"); // user exists, render confirmtion page
} else {
// user does not exist, render form and pass $error_message variable with messasge
$this->render("resetpassword",array(
"model" => $model,
"error_message" => "No such user found!",
));
}
} else {
// this will be rendered if the user has not submitted the form yet
$this->render("resetpassword",array(
"model" => $model,
));
}
}

Answer 2

public function rules() {
$action = Yii::app()->controller->action->id;
if($action == 'login'){
return array(array('username,password', 'required'), array('password', 'length', 'min'=>6, 'max'=>12), array('rememberMe', 'boolean'), array('password', 'authenticate'), array('id, jsid, email, username, password, status', 'safe', 'on'=>'search'));
}else{
return array( array('oldpassword,password1,password2', 'required'), array('password1,password2, oldpassword', 'length', 'min'=>6, 'max'=>12),array('password1', 'compare', 'compareAttribute'=>'password2'), array('id, jsid, email, username, password, status', 'safe', 'on'=>'search'),);
}
}