Edit.php

<?php
/**
 *
 * License, TERMS and CONDITIONS
 *
 * This software is lisensed under the GNU LESSER GENERAL PUBLIC LICENSE (LGPL) version 3
 * Please read the license here : http://www.gnu.org/licenses/lgpl-3.0.txt
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * ATTRIBUTION REQUIRED
 * 4. All web pages generated by the use of this software, or at least
 * 	  the page that lists the recent questions (usually home page) must include
 *    a link to the http://www.lampcms.com and text of the link must indicate that
 *    the website\'s Questions/Answers functionality is powered by lampcms.com
 *    An example of acceptable link would be "Powered by <a href="http://www.lampcms.com">LampCMS</a>"
 *    The location of the link is not important, it can be in the footer of the page
 *    but it must not be hidden by style attibutes
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This product includes GeoLite data created by MaxMind,
 *  available from http://www.maxmind.com/
 *
 *
 * @author     Dmitri Snytkine <cms@lampcms.com>
 * @copyright  2005-2011 (or current year) ExamNotes.net inc.
 * @license    http://www.gnu.org/licenses/lgpl-3.0.txt GNU LESSER GENERAL PUBLIC LICENSE (LGPL) version 3
 * @link       http://www.lampcms.com   Lampcms.com project
 * @version    Release: @package_version@
 *
 *
 */


namespace Lampcms\Controllers;

use Lampcms\WebPage;

/**
 * Controller for creating a page
 * with the "Edit" form
 * to edit question or answer
 * It creates the form object
 * and adds form to the page template
 * 
 * @author Dmitri Snytkine
 *
 */
class Edit extends WebPage
{

	protected $collection;

	protected $oResource;

	protected $oForm;

	protected function main(){

		$this->getResource()
		->checkPermission()
		->makeForm()
		->setForm()
		->setMemo();
	}

	/**
	 * @todo translate string
	 *
	 * @return object $this
	 */
	protected function setMemo(){
		$memo = '<strong>How to Edit:</strong>
		<ul>
		<li>Fix grammatical or spelling errors</li>
		<li>Clarify meaning without changing it</li>
		<li>Add related resources or links</li>
		</ul>';

		$this->aPageVars['qheader'] = '<div class="memo">'.$memo.'</div>';

		return $this;
	}


	protected function makeForm(){
		d('cp');
		$this->oForm = new \Lampcms\Forms\Edit($this->oRegistry);
		d('body: '.$this->oResource['b']);
		$this->oForm->qbody = $this->oResource['b'];
		$this->oForm->id = $this->oResource['_id'];
		$this->oForm->rtype = $this->oRequest['rtype'];

		if('ANSWERS' === $this->collection){
			$this->oForm->hidden = ' hidden';
		} else {
			$this->oForm->title = $this->oResource['title'];
			$this->oForm->id_title = $this->oResource['id_title'];
			$minTitle = $this->oRegistry->Ini->MIN_TITLE_CHARS;
			$this->oForm->addValidator('title', function($val) use ($minTitle){
				
				if(mb_strlen($val) < $minTitle){
					$err = 'Title must contain at least %s letters';
					return sprintf($err, $minTitle);
				}

				return true;
			});
		}

		return $this;
	}


	/**
	 * Add html of the form
	 * to page body
	 *
	 * @return object $this
	 */
	protected function setForm(){
		$form = $this->oForm->getForm();
		$this->aPageVars['body'] = $form;

		return $this;
	}


	/**
	 * Create object of type Question or Answer
	 *
	 * @return object $this
	 */
	protected function getResource(){
		$this->collection = ('q' == $this->oRequest['rtype']) ? 'QUESTIONS' : 'ANSWERS';
		$this->permission = ('QUESTIONS' === $this->collection) ? 'edit_question' : 'edit_answer';

		d('type: '.$this->collection);
		$coll = $this->oRegistry->Mongo->getCollection($this->collection);
		$a = $coll->findOne(array('_id' => (int)$this->oRequest['rid']));
		d('a: '.print_r($a, 1));

		if(empty($a)){

			throw new \Lampcms\Exception('Item not found');
		}

		$class = ('QUESTIONS' === $this->collection) ? '\\Lampcms\\Question' : '\\Lampcms\\Answer';

		$this->oResource = new $class($this->oRegistry, $a);

		return $this;
	}


	/**
	 * Edits can be done by owner of resource
	 * OR by someone who has necessary permission
	 *
	 * @return object $this
	 * @throws checkAccessPermission() will throw exception
	 * if Viewer does not have required permission
	 */
	protected function checkPermission(){
		if(!\Lampcms\isOwner($this->oRegistry->Viewer, $this->oResource)){
			if(\Lampcms\ReputationAcl::EDIT > $this->oRegistry->Viewer->getReputation()){
				$this->checkAccessPermission();
			}
		}

		return $this;
	}

}