Get user id

weather_block.php

$weather = false;

if ( $this->Session->check('Auth.User.id') ) {
  App::uses('User','Model');
  $UserModel = new User();
  $user = $UserModel->find('first',array('conditions'=>array('User.id'=>$this->Session->read('Auth.User.id')),'contain' => array('FarmleadProfile')));
  if ( !empty($user) && !empty($user['FarmleadProfile'])) {
    // construct address
    $address = 'Saskatoon/SK/Canada';
    $weather = $weatherLib->fetchWeather('autoip');
  }
} else {
  $weather = $weatherLib->fetchWeather('autoip');
}