JezK

Edit File: AppModel.php

<?php
/**
 * Application model for CakePHP.
 *
 * This file is application-wide model file. You can put all
 * application-wide model-related methods here.
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @package       app.Model
 * @since         CakePHP(tm) v 0.2.9
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */

App::uses('Model', 'Model');
App::uses('SimplePasswordHasher', 'Controller/Component/Auth');
//App::uses('File', 'Utility');

/**
 * Application model for Cake.
 *
 * Add your application-wide methods in the class below, your models
 * will inherit them.
 *
 * @package       app.Model
 */
class AppModel extends Model
{
    public function studentAverageResult($examId)
    {
        $ExamResult = ClassRegistry::init('ExamResult');
        $totalAttempt = $ExamResult->find('count', array('conditions' => array('exam_id' => $examId)));
        $ExamResult->virtualFields = array('total' => 'SUM(ExamResult.percent)');
        $studentPercent = $ExamResult->find('first', array('conditions' => array('exam_id' => $examId)));
        $totalPercent = $studentPercent['ExamResult']['total'];
        if ($totalAttempt > 0)
            $averagePercent = CakeNumber::precision($totalPercent / $totalAttempt, 2);
        else
            $averagePercent = 0;
        return $averagePercent;

}

public function examTotalAbsent($examId, $findMethod = 'count')
    {
        $Exam = ClassRegistry::init('Exam');
        $ExamResult = $Exam->find($findMethod, array(
            'fields' => array('Student.name', 'Student.email', 'Student.enroll', 'Student.phone'),
            'joins' => array(array('table' => 'exam_groups', 'alias' => 'ExamGroup', 'type' => 'Inner', 'conditions' => array('Exam.id=ExamGroup.exam_id')),
                array('table' => 'student_groups', 'alias' => 'StudentGroup', 'type' => 'Inner', 'conditions' => array('StudentGroup.group_id=ExamGroup.group_id')),
                array('table' => 'students', 'alias' => 'Student', 'type' => 'INNER', 'conditions' => array('Student.id=StudentGroup.student_id')),
                array('table' => 'exam_results', 'alias' => 'ExamResult', 'type' => 'LEFT', 'conditions' => array('ExamResult.student_id=Student.id', 'ExamResult.exam_id=Exam.id'))),
            'conditions' => array('Exam.status' => 'Closed', 'Exam.id' => $examId, 'ExamResult.id' => NULL, 'Exam.finalized_time>Student.created', 'Student.status' => 'Active'),
            'group' => array('Student.id')));
        return $ExamResult;
    }

public function studentStat($examId, $type, $findMethod = 'count')
    {
        $ExamResult = ClassRegistry::init('ExamResult');
        return $ExamResult->find($findMethod, array('fields' => array('Student.name', 'Student.email', 'Student.enroll', 'Student.phone', 'ExamResult.percent', 'ExamResult.result'),
            'joins' => array(array('table' => 'students', 'alias' => 'Student', 'type' => 'INNER', 'conditions' => array('Student.id=ExamResult.student_id'))),
            'conditions' => array('exam_id' => $examId, 'result' => $type, 'Student.status' => 'Active')));
    }

function unbindValidation($type, $fields, $require = false)
    {
        if ($type === 'remove') {
            $this->validate = array_diff_key($this->validate, array_flip($fields));
        } else
            if ($type === 'keep') {
                $this->validate = array_intersect_key($this->validate, array_flip($fields));
            }

if ($require === true) {
            foreach ($this->validate as $field => $rules) {
                if (is_array($rules)) {
                    $rule = key($rules);

$this->validate[$field][$rule]['required'] = true;
                } else {
                    $ruleName = (ctype_alpha($rules)) ? $rules : 'required';

$this->validate[$field] = array($ruleName => array('rule' => $rules, 'required' => true));
                }
            }
        }
    }

public function alphaNumericCustom($check)
    {
        // $data array is passed using the form field name as the key
        // have to extract the value to make the function generic
        $value = array_values($check);
        $value = $value[0];
        //return preg_match('/^[a-z0-9 \/ \s\\\\,-.:;"~!@#$&%&*{}\\[\\]()_=+|?]*$/i', $value);
        return true;
    }

public function passwordHasher($plainPassword)
    {
        $passwordHasher = new SimplePasswordHasher(array('hashType' => 'sha256'));
        $password = $passwordHasher->hash($plainPassword);
        return $password;
    }

public function dateFormatBeforeSave($dateString)
    {
        return date('Y-m-d', strtotime($dateString));
    }

public function dateTimeFormatBeforeSave($dateString)
    {
        return date('Y-m-d H:i:s', strtotime($dateString));
    }
    function getLastQuery()
    {
        $dbo = $this->getDatasource();
        $logs = $dbo->getLog();
        // echo "<pre>";
        // print_r($logs);
        $lastLog = end($logs['log']);
        return $lastLog['query'];
    }
}