root/trunk/app/controllers/lessons_controller.php

<?php
/**
*  Karamelo e-Learning Platform
*  Chipotle Software TM 2002-2008
*  GPLv3
*  @author Manuel Montoya manuel<arroba>mononeurona<punto>org
*  @version 0.3
*  @package Karamelo
*/
// file : app/controller/lessons_controller.php
 
App::import('Sanitize');

class LessonsController extends AppController
{
 public $helpers       = array('Ajax', 'User', 'Fck', 'Gags', 'Time');
 
 public $components    = array('Edublog', 'Captcha');

 public $paginate = array('limit' => 20, 'page' => 1);
 
 public function beforeFilter() 
 {
    parent::beforeFilter();
    $this->Auth->allow(array('view', 'display', 'annotation', 'captcha', 'contribution'));
 }

 public function annotation()
 {
  if (!empty($this->data['Annotation']) && $this->Auth->user()):
    Sanitize::clean($this->data['Annotation']);
  
    $this->data['Annotation']['user_id'] = $this->Auth->user('id'); 
    
    if ($this->Lesson->Annotation->save($this->data)):
         $this->msgFlash(__('Comment saved', true), $this->data['Annotation']['redirect_to'].'/#comments');
    endif;
 endif;
 }  
 
 public function contribution()
 {
  if ($this->data['Contribution']['captcha'] != $this->Session->read('captcha') || strlen($this->data['Contribution']['captcha']) < 3):
     $this->flash(__('Captcha is wrong', true), $this->data['Contribution']['redirect_to'].'/#comments');
     $this->Session->delete('captcha');
     return false;
  endif;

  if (!empty($this->data['Contribution'])):
    Sanitize::clean($this->data['Contribution']);
  $this->data['Contribution']['type'] = 2;
    if ($this->Lesson->Contribution->save($this->data)):
         $this->Session->delete('captcha');    
         $this->msgFlash(__('Comment saved', true), $this->data['Contribution']['redirect_to'].'/#comments');
    endif;
 endif;
 }  
 
 public function view($username, $lesson_id)
 {
  $this->__visits($lesson_id); // sum 1 to visits
  $conditions        = array('Lesson.id'=>$lesson_id, 'Lesson.status'=>1);
  $fields            = array('Lesson.id', 'Lesson.title', 'Lesson.body', 'Lesson.created', 'Lesson.disc', 'Lesson.modified', 'Lesson.user_id', 'Lesson.visits');
  $this->Lesson->User->unbindAll();
  $data              = $this->Lesson->find($conditions, $fields, null, 2); 
  
  $this->set('data', $data);
 
  $user_id           = (int) $this->Lesson->User->field('id', array('User.username'=>$username));
        
  $this->layout      = $this->Edublog->layout($user_id);
    
  $this->Edublog->blog($user_id); // blogger elements
        
  $this->pageTitle   = $username .' '. __('Lesson', true);
 }

 public function captcha()
 {
   return $this->Captcha->render();
 }
 
 private function __visits($lesson_id)
  {
   if ( $this->Session->read('Lesson.id') == $lesson_id):
      return; 
   else:
      $this->Lesson->addVisit($lesson_id);
      $this->Session->write('Lesson.id', $lesson_id);
   endif;
 }

 public function display($username) 
 { 
   $user_id         = (int) $this->Lesson->User->field('id', array('User.username'=>$username));
   $this->pageTitle = $username . ' '.__('Lessons', true);
   $this->paginate['conditions']  = array('Lesson.status'=>1, 'Lesson.user_id'=>$user_id);
   $this->paginate['fields']      = array('id', 'title', 'created', 'user_id');
   $this->paginate['order']       = array('Lesson.title' => 'DESC');

   $data = $this->paginate('Lesson');

   $this->set(compact('data'));

   $this->layout    = $this->Edublog->layout($user_id);
        
   $this->Edublog->blog($user_id); // blogger elements
 }
    
 /***   === ADMIN METHODS   ****/
 public function admin_listing()
 {   
   $this->layout    = 'admin';        
   $this->PageTitle = __('Lessons', true);
   $this->paginate['conditions']  = array('Lesson.user_id'=>$this->Auth->user('id'));
   $this->paginate['fields']      = array('id', 'title', 'created', 'user_id', 'status');
   $this->paginate['order']       = array('Lesson.id' => 'DESC');
   $data = $this->paginate('Lesson');
   $this->set(compact('data'));
 }
 
 public function admin_edit($lesson_id=null)
 {
  $this->layout    = 'admin';
  $this->set('subjects', Set::combine($this->Lesson->Subject->find('all', array('order' => 'title')), "{n}.Subject.id","{n}.Subject.title"));
  if ( !empty( $this->data['Lesson'] ) ):
    Sanitize::paranoid($this->data['Lesson']['title']);
    Sanitize::html($this->data['Lesson']['body']);
    $this->data['Lesson']['user_id'] = (int) $this->Auth->user('id');
    if ($this->Lesson->save($this->data)):
        if ( $this->data['Lesson']['end'] == 0 && !isset($this->data['Lesson']['id']) ):
                $id = $this->Lesson->getLastInsertID();
                $this->msgFlash(__('Data saved', true), '/admin/lessons/edit/'.$id);
    elseif ( $this->data['Lesson']['end'] == 0 && isset($this->data['Lesson']['id']) ):
             $this->msgFlash(__('Data saved', true), '/admin/lessons/edit/'.$this->data['Lesson']['id']);
    elseif ( $this->data['Lesson']['end'] == 1 ):
             $this->msgFlash(__('Data saved', true), '/admin/lessons/listing');
    endif;
    endif;
  elseif( $lesson_id != null && intval($lesson_id)):
    $this->data      = $this->Lesson->read(null, $lesson_id);    
  endif;
 }
 
 public function admin_change($lesson_id, $status)
 {  
   $this->data['Lesson']['status'] = ($status == 0 ) ? 1 : 0;
     
   $this->data['Lesson']['id']     = (int) $lesson_id;
     
   if ($this->Lesson->save($this->data, false)):
    $this->msgFlash(__('Status modified', true), '/admin/lessons/listing');
   endif;
 }

 public function admin_delete($lesson_id)
 {
  if ($this->Lesson->del($lesson_id)):
       $this->msgFlash(__('Data removed', true), '/admin/lessons/listing');
  endif; 
 }
}
?>