Hi All,
In this blog we will discuss how to change the password in cakePhp by using Auth.

Firstly, in your model you have to define a function beforeSave which will hash your password to auth password, you can do this by writing the below code:

public function beforeSave($options = array()) {

        if (isset($this->data[$this->alias]['password'])) {

        $this->data[$this->alias]['password'] = AuthComponent::password($this->data[$this->alias]['password']);
        }
        return true;
    }

In your change Password function you have to write-

    public function changePassword() {

        if ($this->data) {
            if (!empty($this->data['User']['password']) && !empty($this->data['User']['repassword'])) {
                if ($this->data['User']['password'] == $this->data['User']['repassword']) {
                $userInfo=$this->User->findById($this->data);
                  if(AuthComponent::password($this->data['User']['old_password'])==$userInfo['User']['password']){                  
if ($this->User->save($this->data)) {
                        $this->Session->setFlash('Password Changed Successfully', 'default', array('class' => 'green'));
                        $this->redirect('/admin/Users/dashboard');

                    } }else {
                        $this->Session->setFlash('Unable to save password', 'default', array('class' => 'red'));
                        $this->redirect('/admin/Users/changePassword');
                    }
                } else {
                    $this->Session->setFlash('Password and Re password does not match', 'default', array('class' => 'red'));
                    $this->redirect('/admin/Users/changePassword');
                }
            } else {
                $this->Session->setFlash('Password and Re password cannot be empty', 'default', array('class' => 'red'));
                $this->redirect('/admin/Users/changePassword');   
            }
        }
    }

Lastly, In your view.ctp file you have write the below code:

echo $this->Form->create('User');
echo $this->Form->input('id');
echo $this->Form->input('old_password');
echo $this->Form->input('password1');
echo $this->Form->input('repassword');
echo $this->Form->end('Submit');