Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/exercise/exercise_report.php

678 lines
26 KiB

<?php
/* For licensing terms, see /license.txt */
/**
* Exercise list: This script shows the list of exercises for administrators and students.
* @package chamilo.exercise
* @author Julio Montoya <gugli100@gmail.com> jqgrid integration
* Modified by hubert.borderiou (question category)
*
* @todo fix excel export
*
*/
require_once __DIR__.'/../inc/global.inc.php';
// Setting the tabs
$this_section = SECTION_COURSES;
$htmlHeadXtra[] = api_get_jqgrid_js();
$filter_user = isset($_REQUEST['filter_by_user']) ? intval($_REQUEST['filter_by_user']) : null;
$isBossOfStudent = false;
if (api_is_student_boss() && !empty($filter_user)) {
// Check if boss has access to user info.
if (UserManager::userIsBossOfStudent(api_get_user_id(), $filter_user)) {
$isBossOfStudent = true;
} else {
api_not_allowed(true);
}
} else {
api_protect_course_script(true, false, true);
}
// including additional libraries
require_once 'hotpotatoes.lib.php';
$_course = api_get_course_info();
// document path
$documentPath = api_get_path(SYS_COURSE_PATH).$_course['path']."/document";
$origin = isset($origin) ? $origin : null;
$gradebook = isset($gradebook) ? $gradebook : null;
$path = isset($_GET['path']) ? Security::remove_XSS($_GET['path']) : null;
/* Constants and variables */
$is_allowedToEdit = api_is_allowed_to_edit(null, true) || api_is_drh() || api_is_student_boss();
$is_tutor = api_is_allowed_to_edit(true);
$TBL_TRACK_EXERCISES = Database::get_main_table(TABLE_STATISTIC_TRACK_E_EXERCISES);
$TBL_TRACK_ATTEMPT = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
$TBL_TRACK_ATTEMPT_RECORDING = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ATTEMPT_RECORDING);
$TBL_LP_ITEM_VIEW = Database::get_course_table(TABLE_LP_ITEM_VIEW);
$allowCoachFeedbackExercises = api_get_setting('allow_coach_feedback_exercises') === 'true';
$course_id = api_get_course_int_id();
$exercise_id = isset($_REQUEST['exerciseId']) ? intval($_REQUEST['exerciseId']) : null;
$locked = api_resource_is_locked_by_gradebook($exercise_id, LINK_EXERCISE);
if (empty($exercise_id)) {
api_not_allowed(true);
}
if (!$is_allowedToEdit && !$allowCoachFeedbackExercises) {
api_not_allowed(true);
}
if (!empty($exercise_id)) {
$parameters['exerciseId'] = $exercise_id;
}
if (!empty($_GET['path'])) {
$parameters['path'] = Security::remove_XSS($_GET['path']);
}
if (!empty($_REQUEST['export_report']) && $_REQUEST['export_report'] == '1') {
if (api_is_platform_admin() || api_is_course_admin() ||
api_is_course_tutor() || api_is_course_coach()
) {
$loadExtraData = false;
if (isset($_REQUEST['extra_data']) && $_REQUEST['extra_data'] == 1) {
$loadExtraData = true;
}
$includeAllUsers = false;
if (isset($_REQUEST['include_all_users']) &&
$_REQUEST['include_all_users'] == 1
) {
$includeAllUsers = true;
}
$onlyBestAttempts = false;
if (isset($_REQUEST['only_best_attempts']) &&
$_REQUEST['only_best_attempts'] == 1
) {
$onlyBestAttempts = true;
}
require_once 'exercise_result.class.php';
$export = new ExerciseResult();
$export->setIncludeAllUsers($includeAllUsers);
$export->setOnlyBestAttempts($onlyBestAttempts);
switch ($_GET['export_format']) {
case 'xls':
$export->exportCompleteReportXLS(
$documentPath,
null,
$loadExtraData,
null,
$_GET['exerciseId']
);
exit;
break;
case 'csv':
default:
$export->exportCompleteReportCSV(
$documentPath,
null,
$loadExtraData,
null,
$_GET['exerciseId']
);
exit;
break;
}
} else {
api_not_allowed(true);
}
}
//Send student email @todo move this code in a class, library
if (isset($_REQUEST['comments']) &&
$_REQUEST['comments'] == 'update' &&
($is_allowedToEdit || $is_tutor || $allowCoachFeedbackExercises)
) {
// Filtered by post-condition
$id = intval($_GET['exeid']);
$track_exercise_info = ExerciseLib::get_exercise_track_exercise_info($id);
if (empty($track_exercise_info)) {
api_not_allowed();
}
$test = $track_exercise_info['title'];
$student_id = $track_exercise_info['exe_user_id'];
$session_id = $track_exercise_info['session_id'];
$lp_id = $track_exercise_info['orig_lp_id'];
$lp_item_view_id = $track_exercise_info['orig_lp_item_view_id'];
$exerciseId = $track_exercise_info['exe_exo_id'];
$course_info = api_get_course_info();
$url = api_get_path(WEB_CODE_PATH).'exercise/result.php?id='.$track_exercise_info['exe_id'].'&'.api_get_cidreq().'&show_headers=1&id_session='.$session_id;
$my_post_info = array();
$post_content_id = array();
$comments_exist = false;
foreach ($_POST as $key_index => $key_value) {
$my_post_info = explode('_', $key_index);
$post_content_id[] = isset($my_post_info[1]) ? $my_post_info[1] : null;
if ($my_post_info[0] == 'comments') {
$comments_exist = true;
}
}
$loop_in_track = $comments_exist === true ? (count($_POST) / 2) : count($_POST);
$array_content_id_exe = array();
if ($comments_exist === true) {
$array_content_id_exe = array_slice($post_content_id, $loop_in_track);
} else {
$array_content_id_exe = $post_content_id;
}
for ($i = 0; $i < $loop_in_track; $i++) {
$my_marks = isset($_POST['marks_'.$array_content_id_exe[$i]]) ? $_POST['marks_'.$array_content_id_exe[$i]] : '';
$contain_comments = $_POST['comments_'.$array_content_id_exe[$i]];
if (isset($contain_comments)) {
$my_comments = $_POST['comments_'.$array_content_id_exe[$i]];
} else {
$my_comments = '';
}
$my_questionid = intval($array_content_id_exe[$i]);
$params = [
'marks' => $my_marks,
'teacher_comment' => $my_comments
];
Database::update(
$TBL_TRACK_ATTEMPT,
$params,
['question_id = ? AND exe_id = ?' => [$my_questionid, $id]]
);
$params = [
'exe_id' => $id,
'question_id' => $my_questionid,
'marks' => $my_marks,
'insert_date' => api_get_utc_datetime(),
'author' => api_get_user_id(),
'teacher_comment' => $my_comments
];
Database::insert($TBL_TRACK_ATTEMPT_RECORDING, $params);
}
$qry = 'SELECT DISTINCT question_id, marks
FROM '.$TBL_TRACK_ATTEMPT.' WHERE exe_id = '.$id.'
GROUP BY question_id';
$res = Database::query($qry);
$tot = 0;
while ($row = Database :: fetch_array($res, 'ASSOC')) {
$tot += $row['marks'];
}
$sql = "UPDATE $TBL_TRACK_EXERCISES
SET exe_result = '".floatval($tot)."'
WHERE exe_id = ".$id;
Database::query($sql);
if (isset($_POST['send_notification'])) {
//@todo move this somewhere else
$subject = get_lang('ExamSheetVCC');
$message = isset($_POST['notification_content']) ? $_POST['notification_content'] : '';
MessageManager::send_message_simple(
$student_id,
$subject,
$message,
api_get_user_id()
);
if ($allowCoachFeedbackExercises) {
Display::addFlash(
Display::return_message(get_lang('MessageSent'))
);
header('Location: '.api_get_self().'?'.api_get_cidreq().'&exerciseId='.$exerciseId);
exit;
}
}
// Updating LP score here
if (in_array($origin, array('tracking_course', 'user_course', 'correct_exercise_in_lp'))
) {
$sql = "UPDATE $TBL_LP_ITEM_VIEW
SET score = '".floatval($tot)."'
WHERE c_id = ".$course_id." AND id = ".$lp_item_view_id;
Database::query($sql);
if ($origin == 'tracking_course') {
//Redirect to the course detail in lp
header('location: '.api_get_path(WEB_CODE_PATH).'exercise/exercise.php?course='.Security::remove_XSS($_GET['course']));
exit;
} else {
// Redirect to the reporting
header('Location: '.api_get_path(WEB_CODE_PATH).'mySpace/myStudents.php?origin='.$origin.'&student='.$student_id.'&details=true&course='.$course_id.'&session_id='.$session_id);
exit;
}
}
}
$actions = null;
if ($is_allowedToEdit && $origin != 'learnpath') {
// the form
if (api_is_platform_admin() || api_is_course_admin() ||
api_is_course_tutor() || api_is_course_coach()
) {
$actions .= '<a href="admin.php?exerciseId='.intval($_GET['exerciseId']).'">'.Display::return_icon('back.png', get_lang('GoBackToQuestionList'), '', ICON_SIZE_MEDIUM).'</a>';
$actions .= '<a href="live_stats.php?'.api_get_cidreq().'&exerciseId='.$exercise_id.'">'.Display::return_icon('activity_monitor.png', get_lang('LiveResults'), '', ICON_SIZE_MEDIUM).'</a>';
$actions .= '<a href="stats.php?'.api_get_cidreq().'&exerciseId='.$exercise_id.'">'.Display::return_icon('statistics.png', get_lang('ReportByQuestion'), '', ICON_SIZE_MEDIUM).'</a>';
$actions .= '<a id="export_opener" href="'.api_get_self().'?export_report=1&exerciseId='.intval($_GET['exerciseId']).'" >'.
Display::return_icon('save.png', get_lang('Export'), '', ICON_SIZE_MEDIUM).'</a>';
// clean result before a selected date icon
$actions .= Display::url(
Display::return_icon('clean_before_date.png', get_lang('CleanStudentsResultsBeforeDate'), '', ICON_SIZE_MEDIUM),
'#',
array('onclick' => "javascript:display_date_picker()")
);
// clean result before a selected date datepicker popup
$actions .= Display::span(
Display::input('input', 'datepicker_start', get_lang('SelectADateOnTheCalendar'),
array('onmouseover'=>'datepicker_input_mouseover()', 'id'=>'datepicker_start', 'onchange'=>'datepicker_input_changed()', 'readonly'=>'readonly')
).
Display::button('delete', get_lang('Delete'),
array('onclick'=>'submit_datepicker()')),
array('style'=>'display:none', 'id'=>'datepicker_span')
);
}
} else {
$actions .= '<a href="exercise.php">'.
Display::return_icon('back.png', get_lang('GoBackToQuestionList'), '', ICON_SIZE_MEDIUM).
'</a>';
}
//Deleting an attempt
if (($is_allowedToEdit || $is_tutor || api_is_coach()) &&
isset($_GET['delete']) && $_GET['delete'] == 'delete' &&
!empty($_GET['did']) && $locked == false
) {
$exe_id = intval($_GET['did']);
if (!empty($exe_id)) {
$sql = 'DELETE FROM '.$TBL_TRACK_EXERCISES.' WHERE exe_id = '.$exe_id;
Database::query($sql);
$sql = 'DELETE FROM '.$TBL_TRACK_ATTEMPT.' WHERE exe_id = '.$exe_id;
Database::query($sql);
header('Location: exercise_report.php?'.api_get_cidreq().'&exerciseId='.$exercise_id);
exit;
}
}
if ($is_allowedToEdit || $is_tutor) {
$interbreadcrumb[] = array("url" => "exercise.php?gradebook=$gradebook", "name" => get_lang('Exercises'));
$objExerciseTmp = new Exercise();
$nameTools = get_lang('StudentScore');
if ($objExerciseTmp->read($exercise_id)) {
$interbreadcrumb[] = array("url" => "admin.php?exerciseId=".$exercise_id, "name" => $objExerciseTmp->selectTitle(true));
}
} else {
$interbreadcrumb[] = array("url" => "exercise.php?gradebook=$gradebook", "name" => get_lang('Exercises'));
$objExerciseTmp = new Exercise();
if ($objExerciseTmp->read($exercise_id)) {
$nameTools = get_lang('Results').': '.$objExerciseTmp->selectTitle(true);
}
}
if (($is_allowedToEdit || $is_tutor || api_is_coach()) &&
isset($_GET['a']) && $_GET['a'] == 'close' &&
!empty($_GET['id']) && $locked == false
) {
// Close the user attempt otherwise left pending
$exe_id = intval($_GET['id']);
$sql = "UPDATE $TBL_TRACK_EXERCISES SET status = '' WHERE exe_id = $exe_id AND status = 'incomplete'";
Database::query($sql);
}
Display :: display_header($nameTools);
// Clean all results for this test before the selected date
if (($is_allowedToEdit || $is_tutor || api_is_coach()) &&
isset($_GET['delete_before_date']) && $locked == false
) {
// ask for the date
$check = Security::check_token('get');
if ($check) {
$objExerciseTmp = new Exercise();
if ($objExerciseTmp->read($exercise_id)) {
$count = $objExerciseTmp->clean_results(
true,
$_GET['delete_before_date'].' 23:59:59'
);
echo Display::return_message(sprintf(get_lang('XResultsCleaned'), $count), 'confirm');
}
}
}
// Security token to protect deletion
$token = Security::get_token();
$actions = Display::div($actions, array('class' => 'actions'));
$extra = '<script>
$(document).ready(function() {
$( "#dialog:ui-dialog" ).dialog( "destroy" );
$( "#dialog-confirm" ).dialog({
autoOpen: false,
show: "blind",
resizable: false,
height:300,
modal: true
});
$("#export_opener").click(function() {
var targetUrl = $(this).attr("href");
$( "#dialog-confirm" ).dialog({
width:400,
height:300,
buttons: {
"'.addslashes(get_lang('Download')).'": function() {
var export_format = $("input[name=export_format]:checked").val();
var extra_data = $("input[name=load_extra_data]:checked").val();
var includeAllUsers = $("input[name=include_all_users]:checked").val();
var attempts = $("input[name=only_best_attempts]:checked").val();
location.href = targetUrl+"&export_format="+export_format+"&extra_data="+extra_data+"&include_all_users="+includeAllUsers+"&only_best_attempts="+attempts;
$( this ).dialog( "close" );
}
}
});
$( "#dialog-confirm" ).dialog("open");
return false;
});
});
</script>';
$extra .= '<div id="dialog-confirm" title="'.get_lang("ConfirmYourChoice").'">';
$form = new FormValidator('report', 'post', null, null, array('class' => 'form-vertical'));
$form->addElement('radio', 'export_format', null, get_lang('ExportAsCSV'), 'csv', array('id' => 'export_format_csv_label'));
$form->addElement('radio', 'export_format', null, get_lang('ExportAsXLS'), 'xls', array('id' => 'export_format_xls_label'));
$form->addElement('checkbox', 'load_extra_data', null, get_lang('LoadExtraData'), '0', array('id' => 'export_format_xls_label'));
$form->addElement('checkbox', 'include_all_users', null, get_lang('IncludeAllUsers'), '0');
$form->addElement('checkbox', 'only_best_attempts', null, get_lang('OnlyBestAttempts'), '0');
$form->setDefaults(array('export_format' => 'csv'));
$extra .= $form->returnForm();
$extra .= '</div>';
if ($is_allowedToEdit) {
echo $extra;
}
echo $actions;
$url = api_get_path(WEB_AJAX_PATH).'model.ajax.php?a=get_exercise_results&exerciseId='.$exercise_id.'&filter_by_user='.$filter_user.'&'.api_get_cidreq();
$action_links = '';
// Generating group list
$group_list = GroupManager::get_group_list();
$group_parameters = array(
'group_all:'.get_lang('All'),
'group_none:'.get_lang('None'),
);
foreach ($group_list as $group) {
$group_parameters[] = $group['id'].':'.$group['name'];
}
if (!empty($group_parameters)) {
$group_parameters = implode(';', $group_parameters);
}
$officialCodeInList = api_get_setting('show_official_code_exercise_result_list');
if ($is_allowedToEdit || $is_tutor) {
// The order is important you need to check the the $column variable in the model.ajax.php file
$columns = array(
get_lang('FirstName'),
get_lang('LastName'),
get_lang('LoginName'),
get_lang('Group'),
get_lang('Duration').' ('.get_lang('MinMinute').')',
get_lang('StartDate'),
get_lang('EndDate'),
get_lang('Score'),
get_lang('IP'),
get_lang('Status'),
get_lang('ToolLearnpath'),
get_lang('Actions')
);
if ($officialCodeInList === 'true') {
$columns = array_merge(array(get_lang('OfficialCode')), $columns);
}
//Column config
$column_model = array(
array('name' => 'firstname', 'index' => 'firstname', 'width' => '50', 'align' => 'left', 'search' => 'true'),
array('name' => 'lastname', 'index' => 'lastname', 'width' => '50', 'align' => 'left', 'formatter' => 'action_formatter', 'search' => 'true'),
array('name' => 'login', 'index' => 'username', 'width' => '40', 'align' => 'left', 'search' => 'true', 'hidden' => 'true'),
array('name' => 'group_name', 'index' => 'group_id', 'width' => '40', 'align' => 'left', 'search' => 'true', 'stype' => 'select',
//for the bottom bar
'searchoptions' => array(
'defaultValue' => 'group_all',
'value' => $group_parameters),
//for the top bar
'editoptions' => array('value' => $group_parameters)),
array('name' => 'duration', 'index' => 'exe_duration', 'width' => '30', 'align' => 'left', 'search' => 'true'),
array('name' => 'start_date', 'index' => 'start_date', 'width' => '60', 'align' => 'left', 'search' => 'true'),
array('name' => 'exe_date', 'index' => 'exe_date', 'width' => '60', 'align' => 'left', 'search' => 'true'),
array('name' => 'score', 'index' => 'exe_result', 'width' => '50', 'align' => 'center', 'search' => 'true'),
array('name' => 'ip', 'index' => 'user_ip', 'width' => '40', 'align' => 'center', 'search' => 'true'),
array('name' => 'status', 'index' => 'revised', 'width' => '40', 'align' => 'left', 'search' => 'true', 'stype' => 'select',
//for the bottom bar
'searchoptions' => array(
'defaultValue' => '',
'value' => ':'.get_lang('All').';1:'.get_lang('Validated').';0:'.get_lang('NotValidated')),
//for the top bar
'editoptions' => array('value' => ':'.get_lang('All').';1:'.get_lang('Validated').';0:'.get_lang('NotValidated'))),
array('name' => 'lp', 'index' => 'lp', 'width' => '60', 'align' => 'left', 'search' => 'false'),
array('name' => 'actions', 'index' => 'actions', 'width' => '60', 'align' => 'left', 'search' => 'false')
);
if ($officialCodeInList == 'true') {
$officialCodeRow = array('name' => 'official_code', 'index' => 'official_code', 'width' => '50', 'align' => 'left', 'search' => 'true');
$column_model = array_merge(array($officialCodeRow), $column_model);
}
$action_links = '
// add username as title in lastname filed - ref 4226
function action_formatter(cellvalue, options, rowObject) {
// rowObject is firstname,lastname,login,... get the third word
var loginx = "'.api_htmlentities(sprintf(get_lang("LoginX"), ":::"), ENT_QUOTES).'";
var tabLoginx = loginx.split(/:::/);
// tabLoginx[0] is before and tabLoginx[1] is after :::
// may be empty string but is defined
return "<span title=\""+tabLoginx[0]+rowObject[2]+tabLoginx[1]+"\">"+cellvalue+"</span>";
}';
}
//Autowidth
$extra_params['autowidth'] = 'true';
//height auto
$extra_params['height'] = 'auto';
?>
<script>
function setSearchSelect(columnName) {
$("#results").jqGrid(
'setColProp',
columnName, {
searchoptions:{
dataInit:function(el) {
$("option[value='1']",el).attr("selected", "selected");
setTimeout(function(){
$(el).trigger('change');
},1000);
}
}
}
);
}
function exportExcel() {
var mya=new Array();
mya=$("#results").getDataIDs(); // Get All IDs
var data=$("#results").getRowData(mya[0]); // Get First row to get the labels
var colNames=new Array();
var ii=0;
for (var i in data){colNames[ii++]=i;} // capture col names
var html="";
for(i=0;i<mya.length;i++) {
data=$("#results").getRowData(mya[i]); // get each row
for(j=0;j<colNames.length;j++) {
html=html+data[colNames[j]]+","; // output each column as tab delimited
}
html=html+"\n"; // output each row with end of line
}
html = html+"\n"; // end of line at the end
var form = $("#export_report_form");
$("#csvBuffer").attr('value', html);
form.target='_blank';
form.submit();
}
$(function() {
<?php
echo Display::grid_js(
'results',
$url,
$columns,
$column_model,
$extra_params,
array(),
$action_links,
true
);
if ($is_allowedToEdit || $is_tutor) {
?>
//setSearchSelect("status");
//
//view:true, del:false, add:false, edit:false, excel:true}
$("#results").jqGrid('navGrid','#results_pager', {view:true, edit:false, add:false, del:false, excel:false},
{height:280, reloadAfterSubmit:false}, // view options
{height:280, reloadAfterSubmit:false}, // edit options
{height:280, reloadAfterSubmit:false}, // add options
{reloadAfterSubmit: false}, // del options
{width:500} // search options
);
/*
// add custom button to export the data to excel
jQuery("#results").jqGrid('navButtonAdd','#results_pager',{
caption:"",
onClickButton : function () {
//exportExcel();
}
});*/
/*
jQuery('#sessions').jqGrid('navButtonAdd','#sessions_pager',{id:'pager_csv',caption:'',title:'Export To CSV',onClickButton : function(e)
{
try {
jQuery("#sessions").jqGrid('excelExport',{tag:'csv', url:'grid.php'});
} catch (e) {
window.location= 'grid.php?oper=csv';
}
},buttonicon:'ui-icon-document'})
*/
//Adding search options
var options = {
'stringResult': true,
'autosearch' : true,
'searchOnEnter':false
}
jQuery("#results").jqGrid('filterToolbar',options);
var sgrid = $("#results")[0];
sgrid.triggerToolbar();
$('#results').on('click', 'a.exercise-recalculate', function (e) {
e.preventDefault();
if (!$(this).data('user') || !$(this).data('exercise') || !$(this).data('id')) {
return;
}
var url = '<?php echo api_get_path(WEB_CODE_PATH) ?>exercise/recalculate.php?<?php echo api_get_cidreq() ?>';
var recalculateXhr = $.post(url, $(this).data());
$.when(recalculateXhr).done(function (response) {
$('#results').trigger('reloadGrid');
});
});
<?php } ?>
});
// datepicker functions
var datapickerInputModified = false;
/**
* return true if the datepicker input has been modified
*/
function datepicker_input_changed() {
datapickerInputModified = true;
}
/**
* disply the datepicker calendar on mouse over the input
*/
function datepicker_input_mouseover() {
$('#datepicker_start').datepicker( "show" );
}
/**
* display or hide the datepicker input, calendar and button
*/
function display_date_picker() {
if (!$('#datepicker_span').is(":visible")) {
$('#datepicker_span').show();
$('#datepicker_start').datepicker( "show" );
} else {
$('#datepicker_start').datepicker( "hide" );
$('#datepicker_span').hide();
}
}
/**
* confirm deletion
*/
function submit_datepicker() {
if (datapickerInputModified) {
var dateTypeVar = $('#datepicker_start').datepicker('getDate');
var dateForBDD = $.datepicker.formatDate('yy-mm-dd', dateTypeVar);
// Format the date for confirm box
var dateFormat = $( "#datepicker_start" ).datepicker( "option", "dateFormat" );
var selectedDate = $.datepicker.formatDate(dateFormat, dateTypeVar);
if (confirm("<?php echo convert_double_quote_to_single(get_lang('AreYouSureDeleteTestResultBeforeDateD')); ?>" + selectedDate)) {
self.location.href = "exercise_report.php?<?php echo api_get_cidreq(); ?>&exerciseId=<?php echo $exercise_id; ?>&delete_before_date="+dateForBDD+"&sec_token=<?php echo $token; ?>";
}
}
}
/**
* initiate datepicker
*/
$(function() {
$( "#datepicker_start" ).datepicker({
defaultDate: "",
changeMonth: false,
numberOfMonths: 1
});
});
</script>
<form id="export_report_form" method="post" action="exercise_report.php?<?php echo api_get_cidreq(); ?>">
<input type="hidden" name="csvBuffer" id="csvBuffer" value="" />
<input type="hidden" name="export_report" id="export_report" value="1" />
<input type="hidden" name="exerciseId" id="exerciseId" value="<?php echo $exercise_id ?>" />
</form>
<?php
echo Display::grid_html('results');
Display :: display_footer();