Cakephp email functionality giving Unknown email configuration "gmail" - email

Question

I have written generating email functionality inside public function add().
My idea is to send my to the users who had registered.
my add functionality looks like this.
add functionality is working fine but mail generation giving error says Unknown email configuration "gmail". Any help please.
app/Controller/UsersController.php
<?php
App::uses('AppController', 'Controller');
class UsersController extends AppController {
public function add() {
if ($this->request->is('post')) {
$this->User->create();
if ($this->User->save($this->request->data)) {
$data[] = $this->request->data;
foreach($data as $row){
$email_name = $row['User']['username'];
$password = $row['User']['password'];
}
$data = array();
$subject = "Visualization Tool Login credentials";
// From
$header="manasasirsi17#gmail.com";
// Your message
$message="welcome user\r\n";
$message.="Thank You for Registering\r\n";
$message.="your login details are as given below\r\n";
$message.="username:$email_name\r\n";
$message.="password:$password\r\n";
App::uses('CakeEmail', 'Network/Email');
$smtp = new CakeEmail('smtp');
$smtp->from(array($header => $header));
$smtp->to($email_name);
$smtp->subject($subject);
$smtp->emailFormat('html');
$Email->send($message);
$this->Session->setFlash(__('Login Details are sent to You via Email.'));
$this->Session->setFlash(__('The user has been saved.'));
return $this->redirect(array('controller' => 'Users', 'action' => 'login'));
} else {
$this->Session->setFlash(__('The user could not be saved. Please, try again.'));
}
}
}
}
app/Config/email.php
class EmailConfig {
public $default = array(
'transport' => 'Mail',
'from' => 'you#localhost',
//'charset' => 'utf-8',
//'headerCharset' => 'utf-8',
);
public $smtp = array(
'transport' => 'Smtp',
'host' => 'ssl://smtp.gmail.com',
'port' => 25,
'timeout' => 30,
'username' => 'manasasirsi17#gmail.com',
'password' => 'secure',
'client' => null,
'log' => false
);
public $fast = array(
'from' => 'you#localhost',
'sender' => null,
'to' => null,
'cc' => null,
'bcc' => null,
'replyTo' => null,
'readReceipt' => null,
'returnPath' => null,
'messageId' => true,
'subject' => null,
'message' => null,
'headers' => null,
'viewRender' => null,
'template' => false,
'layout' => false,
'viewVars' => null,
'attachments' => null,
'emailFormat' => null,
'transport' => 'Smtp',
'host' => 'localhost',
'port' => 25,
'timeout' => 30,
'username' => 'user',
'password' => 'secret',
'client' => null,
'log' => true,
//'charset' => 'utf-8',
//'headerCharset' => 'utf-8',
);
}

Answer 1

You've not defined a gmail email config in your EmailConfig class. This line:-
$Email = new CakeEmail('gmail');
should be from the looks of your code:-
$Email = new CakeEmail('smtp');
The parameter you pass to CakeEmail determines which of the defined configs in EmailConfig you want to use. If you had wanted to pass it gmail you would have needed to add a $gmail property to the EmailConfig class containing the configuration.