JezK

Edit File: Dashboard.php

<?php

class Dashboard extends AppModel
{
    public $validationDomain = 'validation';
    public $useTable = "exam_results";

public function performanceCount($studentId, $month)
    {
        $ExamResult = ClassRegistry::init('ExamResult');
        $conditions = array('ExamResult.student_id' => $studentId, 'MONTH(ExamResult.start_time)' => $month, 'ExamResult.user_id >' => 0);
        $examCount = $ExamResult->find('count', array('conditions' => array($conditions)));
        $ExamResult->virtualFields = array('total' => 'SUM(ExamResult.percent)');
        $exampercent = $ExamResult->find('first', array('field' => array('total'),
            'conditions' => array($conditions)));
        $percent = $exampercent['ExamResult']['total'];
        if ($examCount > 0)
            $averagePercent = CakeNumber::precision($percent / $examCount, 2);
        else
            $averagePercent = 0;
        return $averagePercent;
    }

public function userTotalAbsent($studentId)
    {
        $Exam = ClassRegistry::init('Exam');
        $ExamResult = ClassRegistry::init('ExamResult');
        $userTotalExam = $Exam->find('count', array(
            'joins' => array(array('table' => 'exam_groups', 'alias' => 'ExamGroup', 'type' => 'Inner',
                'conditions' => array('Exam.id=ExamGroup.exam_id', '')),
                array('table' => 'exam_results', 'alias' => 'ExamResult', 'type' => 'Left',
                    'conditions' => array('ExamResult.exam_id=Exam.id')),
                array('table' => 'student_groups', 'alias' => 'StudentGroup', 'type' => 'Inner',
                    'conditions' => array('StudentGroup.group_id=ExamGroup.group_id'))),
            'conditions' => array('Exam.status' => 'Closed', "StudentGroup.student_id=$studentId"),
            'order' => array('Exam.start_date' => 'asc'),
            'group' => array('Exam.id')));
        $userAttemptExam = $ExamResult->find('count', array('conditions' => array('ExamResult.student_id' => $studentId),
            'group' => array('ExamResult.exam_id')));
        $userTotalAbsent = $userTotalExam - $userAttemptExam;
        return $userTotalAbsent;
    }

public function userBestExam($studentId)
    {
        $ExamResult = ClassRegistry::init('ExamResult');
        $bestExam = array();
        $bestExam = $ExamResult->find('first', array('fields' => array('Exam.name', 'ExamResult.start_time'),
            'joins' => array(array('table' => 'exams', 'alias' => 'Exam', 'type' => 'Inner',
                'conditions' => array('ExamResult.exam_id=Exam.id'))),
            'conditions' => array('ExamResult.student_id' => $studentId),
            'order' => array('ExamResult.percent' => 'desc')));
        return $bestExam;
    }
}

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