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lib.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Library of functions and constants for module feedback
* includes the main-part of feedback-functions
*
* @package mod-feedback
* @copyright Andreas Grabs
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/** Include eventslib.php */
require_once($CFG->libdir.'/eventslib.php');
/** Include calendar/lib.php */
require_once($CFG->dirroot.'/calendar/lib.php');
define('FEEDBACK_ANONYMOUS_YES', 1);
define('FEEDBACK_ANONYMOUS_NO', 2);
define('FEEDBACK_MIN_ANONYMOUS_COUNT_IN_GROUP', 2);
define('FEEDBACK_DECIMAL', '.');
define('FEEDBACK_THOUSAND', ',');
define('FEEDBACK_RESETFORM_RESET', 'feedback_reset_data_');
define('FEEDBACK_RESETFORM_DROP', 'feedback_drop_feedback_');
define('FEEDBACK_MAX_PIX_LENGTH', '400'); //max. Breite des grafischen Balkens in der Auswertung
/**
* @uses FEATURE_GROUPS
* @uses FEATURE_GROUPINGS
* @uses FEATURE_GROUPMEMBERSONLY
* @uses FEATURE_MOD_INTRO
* @uses FEATURE_COMPLETION_TRACKS_VIEWS
* @uses FEATURE_GRADE_HAS_GRADE
* @uses FEATURE_GRADE_OUTCOMES
* @param string $feature FEATURE_xx constant for requested feature
* @return mixed True if module supports feature, null if doesn't know
*/
function feedback_supports($feature) {
switch($feature) {
case FEATURE_GROUPS: return true;
case FEATURE_GROUPINGS: return true;
case FEATURE_GROUPMEMBERSONLY: return true;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
case FEATURE_GRADE_HAS_GRADE: return false;
case FEATURE_GRADE_OUTCOMES: return false;
default: return null;
}
}
/**
* this will create a new instance and return the id number
* of the new instance.
*
* @global object
* @param object $feedback the object given by mod_feedback_mod_form
* @return int
*/
function feedback_add_instance($feedback) {
global $DB;
$feedback->timemodified = time();
$feedback->id = '';
//check if openenable and/or closeenable is set and set correctly to save in db
if(empty($feedback->openenable)) {
$feedback->timeopen = 0;
}
if(empty($feedback->closeenable)) {
$feedback->timeclose = 0;
}
if(empty($feedback->site_after_submit)) {
$feedback->site_after_submit = '';
}
//saving the feedback in db
$feedbackid = $DB->insert_record("feedback", $feedback);
$feedback->id = $feedbackid;
feedback_set_events($feedback);
return $feedbackid;
}
/**
* this will update a given instance
*
* @global object
* @param object $feedback the object given by mod_feedback_mod_form
* @return boolean
*/
function feedback_update_instance($feedback) {
global $DB;
$feedback->timemodified = time();
$feedback->id = $feedback->instance;
//check if openenable and/or closeenable is set and set correctly to save in db
if(empty($feedback->openenable)) {
$feedback->timeopen = 0;
}
if(empty($feedback->closeenable)) {
$feedback->timeclose = 0;
}
if(empty($feedback->site_after_submit)) {
$feedback->site_after_submit = '';
}
//save the feedback into the db
$DB->update_record("feedback", $feedback);
//create or update the new events
feedback_set_events($feedback);
return true;
}
/**
* this will delete a given instance.
* all referenced data also will be deleted
*
* @global object
* @param int $id the instanceid of feedback
* @return boolean
*/
function feedback_delete_instance($id) {
global $DB;
//get all referenced items
$feedbackitems = $DB->get_records('feedback_item', array('feedback'=>$id));
//deleting all referenced items and values
if (is_array($feedbackitems)){
foreach($feedbackitems as $feedbackitem){
$DB->delete_records("feedback_value", array("item"=>$feedbackitem->id));
$DB->delete_records("feedback_valuetmp", array("item"=>$feedbackitem->id));
}
$DB->delete_records("feedback_item", array("feedback"=>$id));
}
//deleting the referenced tracking data
$DB->delete_records('feedback_tracking', array('feedback'=>$id));
//deleting the completeds
$DB->delete_records("feedback_completed", array("feedback"=>$id));
//deleting the unfinished completeds
$DB->delete_records("feedback_completedtmp", array("feedback"=>$id));
//deleting old events
$DB->delete_records('event', array('modulename'=>'feedback', 'instance'=>$id));
return $DB->delete_records("feedback", array("id"=>$id));
}
/**
* this is called after deleting all instances if the course will be deleted.
* only templates have to be deleted
*
* @global object
* @param object $course
* @return boolean
*/
function feedback_delete_course($course) {
global $DB;
//delete all templates of given course
return $DB->delete_records('feedback_template', array('course'=>$course->id));
}
/**
* Return a small object with summary information about what a
* user has done with a given particular instance of this module
* Used for user activity reports.
* $return->time = the time they did it
* $return->info = a short text description
*
* @param object $course
* @param object $user
* @param object $mod
* @param object $feedback
* @return object
*/
function feedback_user_outline($course, $user, $mod, $feedback) {
return null;
}
/**
* Returns all users who has completed a specified feedback since a given time
* many thanks to Manolescu Dorel, who contributed these two functions
*
* @global object
* @global object
* @global object
* @global object
* @uses CONTEXT_MODULE
* @param array $activities Passed by reference
* @param int $index Passed by reference
* @param int $timemodified Timestamp
* @param int $courseid
* @param int $cmid
* @param int $userid
* @param int $groupid
* @return void
*/
function feedback_get_recent_mod_activity(&$activities, &$index, $timemodified, $courseid, $cmid, $userid="", $groupid="") {
global $CFG, $COURSE, $USER, $DB;
if ($COURSE->id == $courseid) {
$course = $COURSE;
} else {
$course = $DB->get_record('course', array('id'=>$courseid));
}
$modinfo =& get_fast_modinfo($course);
$cm = $modinfo->cms[$cmid];
if ($userid) {
$userselect = "AND u.id = $userid";
} else {
$userselect = "";
}
if ($groupid) {
$groupselect = "AND gm.groupid = $groupid";
$groupjoin = "JOIN {groups_members} gm ON gm.userid=u.id";
} else {
$groupselect = "";
$groupjoin = "";
}
if (!$feedbackitems = $DB->get_records_sql("SELECT fk . * , fc . * , u.firstname, u.lastname, u.email, u.picture
FROM {feedback_completed} fc
JOIN {feedback} fk ON fk.id = fc.feedback
JOIN {user} u ON u.id = fc.userid
$groupjoin
WHERE fc.timemodified > $timemodified AND fk.id = $cm->instance
$userselect $groupselect
ORDER BY fc.timemodified DESC")) {
return;
}
$cm_context = get_context_instance(CONTEXT_MODULE, $cm->id);
$accessallgroups = has_capability('moodle/site:accessallgroups', $cm_context);
$viewfullnames = has_capability('moodle/site:viewfullnames', $cm_context);
$groupmode = groups_get_activity_groupmode($cm, $course);
if (is_null($modinfo->groups)) {
$modinfo->groups = groups_get_user_groups($course->id); // load all my groups and cache it in modinfo
}
$aname = format_string($cm->name,true);
foreach ($feedbackitems as $feedbackitem) {
if ($feedbackitem->userid != $USER->id) {
if ($groupmode == SEPARATEGROUPS and !$accessallgroups) {
$usersgroups = groups_get_all_groups($course->id, $feedbackitem->userid, $cm->groupingid);
if (!is_array($usersgroups)) {
continue;
}
$usersgroups = array_keys($usersgroups);
$interset = array_intersect($usersgroups, $modinfo->groups[$cm->id]);
if (empty($intersect)) {
continue;
}
}
}
$tmpactivity = new object();
$tmpactivity->type = 'feedback';
$tmpactivity->cmid = $cm->id;
$tmpactivity->name = $aname;
$tmpactivity->sectionnum= $cm->sectionnum;
$tmpactivity->timestamp = $feedbackitem->timemodified;
$tmpactivity->content->feedbackid = $feedbackitem->id;
$tmpactivity->content->feedbackuserid = $feedbackitem->userid;
$tmpactivity->user->userid = $feedbackitem->userid;
$tmpactivity->user->fullname = fullname($feedbackitem, $viewfullnames);
$tmpactivity->user->picture = $feedbackitem->picture;
$activities[$index++] = $tmpactivity;
}
return;
}
/**
* Prints all users who has completed a specified feedback since a given time
* many thanks to Manolescu Dorel, who contributed these two functions
*
* @global object
* @param object $activity
* @param int $courseid
* @param string $detail
* @param array $modnames
* @return void Output is echo'd
*/
function feedback_print_recent_mod_activity($activity, $courseid, $detail, $modnames) {
global $CFG, $OUTPUT;
echo '<table border="0" cellpadding="3" cellspacing="0" class="forum-recent">';
echo "<tr><td class=\"userpicture\" valign=\"top\">";
echo $OUTPUT->user_picture($activity->user, array('courseid'=>$courseid));
echo "</td><td>";
if ($detail) {
$modname = $modnames[$activity->type];
echo '<div class="title">';
echo "<img src=\"" . $OUTPUT->pix_url('icon', $activity->type) . "\" ".
"class=\"icon\" alt=\"$modname\" />";
echo "<a href=\"$CFG->wwwroot/mod/feedback/view.php?id={$activity->cmid}\">{$activity->name}</a>";
echo '</div>';
}
echo '<div class="title">';
echo '</div>';
echo '<div class="user">';
echo "<a href=\"$CFG->wwwroot/user/view.php?id={$activity->user->userid}&course=$courseid\">"
."{$activity->user->fullname}</a> - ".userdate($activity->timestamp);
echo '</div>';
echo "</td></tr></table>";
return;
}
/**
* Print a detailed representation of what a user has done with
* a given particular instance of this module, for user activity reports.
*
* @param object $course
* @param object $user
* @param object $mod
* @param object $feedback
* @return bool
*/
function feedback_user_complete($course, $user, $mod, $feedback) {
return true;
}
/**
* @return bool true
*/
function feedback_cron () {
return true;
}
/**
* @return bool false
*/
function feedback_get_participants($feedbackid) {
return false;
}
/**
* @return bool false
*/
function feedback_scale_used ($feedbackid,$scaleid) {
return false;
}
/**
* This function is used by the reset_course_userdata function in moodlelib.
* This function will remove all responses from the specified feedback
* and clean up any related data.
*
* @global object
* @global object
* @uses FEEDBACK_RESETFORM_RESET
* @uses FEEDBACK_RESETFORM_DROP
* @param object $data the data submitted from the reset course.
* @return array status array
*/
function feedback_reset_userdata($data) {
global $CFG, $DB;
$resetfeedbacks = array();
$dropfeedbacks = array();
$status = array();
$componentstr = get_string('modulenameplural', 'feedback');
//get the relevant entries from $data
foreach($data as $key => $value) {
switch(true) {
case substr($key, 0, strlen(FEEDBACK_RESETFORM_RESET)) == FEEDBACK_RESETFORM_RESET:
if($value == 1) {
$templist = explode('_', $key);
if(isset($templist[3]))$resetfeedbacks[] = intval($templist[3]);
}
break;
case substr($key, 0, strlen(FEEDBACK_RESETFORM_DROP)) == FEEDBACK_RESETFORM_DROP:
if($value == 1) {
$templist = explode('_', $key);
if(isset($templist[3]))$dropfeedbacks[] = intval($templist[3]);
}
break;
}
}
//reset the selected feedbacks
foreach($resetfeedbacks as $id) {
$feedback = $DB->get_record('feedback', array('id'=>$id));
feedback_delete_all_completeds($id);
$status[] = array('component'=>$componentstr.':'.$feedback->name, 'item'=>get_string('resetting_data','feedback'), 'error'=>false);
}
//drop the selected feedbacks
// foreach($dropfeedbacks as $id) {
// $cm = get_coursemodule_from_instance('feedback', $id);
// feedback_delete_instance($id);
// feedback_delete_course_module($cm->id);
// $status[] = array('component'=>$componentstr, 'item'=>get_string('drop_feedback','feedback'), 'error'=>false);
// }
return $status;
}
/**
* Called by course/reset.php
*
* @global object
* @uses FEEDBACK_RESETFORM_RESET
* @param object $mform form passed by reference
*/
function feedback_reset_course_form_definition(&$mform) {
global $COURSE, $DB;
$mform->addElement('header', 'feedbackheader', get_string('modulenameplural', 'feedback'));
if(!$feedbacks = $DB->get_records('feedback', array('course'=>$COURSE->id), 'name')){
return;
}
$mform->addElement('static', 'hint', get_string('resetting_data','feedback'));
foreach($feedbacks as $feedback) {
$mform->addElement('checkbox', FEEDBACK_RESETFORM_RESET.$feedback->id, $feedback->name);
// $mform->addElement('checkbox', FEEDBACK_RESETFORM_DROP.$feedback->id, get_string('drop_feedback','feedback'));
}
}
/**
* Course reset form defaults.
*
* @global object
* @uses FEEDBACK_RESETFORM_RESET
* @param object $course
*/
function feedback_reset_course_form_defaults($course) {
global $DB;
$return = array();
if(!$feedbacks = $DB->get_records('feedback', array('course'=>$course->id), 'name')){
return;
}
foreach($feedbacks as $feedback) {
$return[FEEDBACK_RESETFORM_RESET.$feedback->id] = true;
// $return[FEEDBACK_RESETFORM_DROP.$feedback->id] = false;
}
return $return;
}
/**
* Called by course/reset.php and shows the formdata by coursereset.
* it prints checkboxes for each feedback available at the given course
* there are two checkboxes: 1) delete userdata and keep the feedback 2) delete userdata and drop the feedback
*
* @global object
* @uses FEEDBACK_RESETFORM_RESET
* @uses FEEDBACK_RESETFORM_DROP
* @param object $course
* @return void
*/
function feedback_reset_course_form($course) {
global $DB, $OUTPUT;
echo get_string('resetting_feedbacks', 'feedback'); echo ':<br />';
if (!$feedbacks = $DB->get_records('feedback', array('course'=>$course->id), 'name')) {
return;
}
foreach($feedbacks as $feedback) {
echo '<p>';
echo get_string('name','feedback').': '.$feedback->name.'<br />';
echo html_writer::checkbox(FEEDBACK_RESETFORM_RESET.$feedback->id, 1, true, get_string('resetting_data','feedback'));
echo '<br />';
echo html_writer::checkbox(FEEDBACK_RESETFORM_DROP.$feedback->id, 1, false, get_string('drop_feedback','feedback'));
echo '</p>';
}
}
/**
* This creates new events given as timeopen and closeopen by $feedback.
*
* @global object
* @param object $feedback
* @return void
*/
function feedback_set_events($feedback) {
global $DB;
// adding the feedback to the eventtable (I have seen this at quiz-module)
$DB->delete_records('event', array('modulename'=>'feedback', 'instance'=>$feedback->id));
if (!isset($feedback->coursemodule)) {
$cm = get_coursemodule_from_id('feedback', $feedback->id);
$feedback->coursemodule = $cm->id;
}
// the open-event
if($feedback->timeopen > 0) {
$event = NULL;
$event->name = get_string('start', 'feedback').' '.$feedback->name;
$event->description = format_module_intro('feedback', $feedback, $feedback->coursemodule);
$event->courseid = $feedback->course;
$event->groupid = 0;
$event->userid = 0;
$event->modulename = 'feedback';
$event->instance = $feedback->id;
$event->eventtype = 'open';
$event->timestart = $feedback->timeopen;
$event->visible = instance_is_visible('feedback', $feedback);
if($feedback->timeclose > 0) {
$event->timeduration = ($feedback->timeclose - $feedback->timeopen);
} else {
$event->timeduration = 0;
}
calendar_event::create($event);
}
// the close-event
if($feedback->timeclose > 0) {
$event = NULL;
$event->name = get_string('stop', 'feedback').' '.$feedback->name;
$event->description = format_module_intro('feedback', $feedback, $feedback->coursemodule);
$event->courseid = $feedback->course;
$event->groupid = 0;
$event->userid = 0;
$event->modulename = 'feedback';
$event->instance = $feedback->id;
$event->eventtype = 'close';
$event->timestart = $feedback->timeclose;
$event->visible = instance_is_visible('feedback', $feedback);
$event->timeduration = 0;
calendar_event::create($event);
}
}
/**
* this function is called by {@link feedback_delete_userdata()}
* it drops the feedback-instance from the course_module table
*
* @global object
* @param int $id the id from the coursemodule
* @return boolean
*/
function feedback_delete_course_module($id) {
global $DB;
if (!$cm = $DB->get_record('course_modules', array('id'=>$id))) {
return true;
}
return $DB->delete_records('course_modules', array('id'=>$cm->id));
}
////////////////////////////////////////////////
//functions to handle capabilities
////////////////////////////////////////////////
/**
* returns the context-id related to the given coursemodule-id
*
* @staticvar object $context
* @param int $cmid the coursemodule-id
* @return object $context
*/
function feedback_get_context($cmid) {
static $context;
if(isset($context)) return $context;
if (!$context = get_context_instance(CONTEXT_MODULE, $cmid)) {
print_error('badcontext');
}
return $context;
}
/**
* returns true if the current role is faked by switching role feature
*
* @global object
* @return boolean
*/
function feedback_check_is_switchrole(){
global $USER;
if(isset($USER->switchrole) AND is_array($USER->switchrole) AND count($USER->switchrole) > 0) {
return true;
}
return false;
}
/**
* get users which have the complete-capability
*
* @global object
* @uses CONTEXT_MODULE
* @param object $cm
* @param int $group single groupid
* @return object the userrecords
*/
function feedback_get_complete_users($cm, $group = false) {
global $DB;
if (!$context = get_context_instance(CONTEXT_MODULE, $cm->id)) {
print_error('badcontext');
}
$params = array($cm->instance);
$fromgroup = '';
$wheregroup = '';
if($group) {
$fromgroup = ', {groups_members} g';
$wheregroup = ' AND g.groupid = ? AND g.userid = c.userid';
$params[] = $group;
}
$sql = 'SELECT u.* FROM {user} u, {feedback_completed} c'.$fromgroup.'
WHERE u.id = c.userid AND c.feedback = ?
'.$wheregroup.'
ORDER BY u.lastname';
return $DB->get_records_sql($sql, $params);
}
/**
* get users which have the viewreports-capability
*
* @uses CONTEXT_MODULE
* @param int $cmid
* @param mixed $groups single groupid or array of groupids - group(s) user is in
* @return object the userrecords
*/
function feedback_get_viewreports_users($cmid, $groups = false) {
if (!$context = get_context_instance(CONTEXT_MODULE, $cmid)) {
print_error('badcontext');
}
//description of the call below: get_users_by_capability($context, $capability, $fields='', $sort='', $limitfrom='', $limitnum='', $groups='', $exceptions='', $doanything=true)
return get_users_by_capability($context, 'mod/feedback:viewreports', '', 'lastname', '', '', $groups, '', false);
}
/**
* get users which have the receivemail-capability
*
* @uses CONTEXT_MODULE
* @param int $cmid
* @param mixed $groups single groupid or array of groupids - group(s) user is in
* @return object the userrecords
*/
function feedback_get_receivemail_users($cmid, $groups = false) {
if (!$context = get_context_instance(CONTEXT_MODULE, $cmid)) {
print_error('badcontext');
}
//description of the call below: get_users_by_capability($context, $capability, $fields='', $sort='', $limitfrom='', $limitnum='', $groups='', $exceptions='', $doanything=true)
return get_users_by_capability($context, 'mod/feedback:receivemail', '', 'lastname', '', '', $groups, '', false);
}
////////////////////////////////////////////////
//functions to handle the templates
////////////////////////////////////////////////
////////////////////////////////////////////////
/**
* creates a new template-record.
*
* @global object
* @param int $courseid
* @param string $name the name of template shown in the templatelist
* @param int $ispublic 0:privat 1:public
* @return int the new templateid
*/
function feedback_create_template($courseid, $name, $ispublic = 0) {
global $DB;
$templ = new object();
$templ->course = $courseid;
$templ->name = $name;
$templ->ispublic = $ispublic;
return $DB->insert_record('feedback_template', $templ);
}
/**
* creates new template items.
* all items will be copied and the attribute feedback will be set to 0
* and the attribute template will be set to the new templateid
*
* @global object
* @param object $feedback
* @param string $name the name of template shown in the templatelist
* @param int $ispublic 0:privat 1:public
* @return boolean
*/
function feedback_save_as_template($feedback, $name, $ispublic = 0) {
global $DB;
if (!$feedbackitems = $DB->get_records('feedback_item', array('feedback'=>$feedback->id))) {
return false;
}
if (!$newtempl = feedback_create_template($feedback->course, $name, $ispublic)) {
return false;
}
//create items of this new template
foreach($feedbackitems as $item) {
unset($item->id);
$item->feedback = 0;
$item->template = $newtempl;
$DB->insert_record('feedback_item', $nitem);
}
return true;
}
/**
* deletes all feedback_items related to the given template id
*
* @global object
* @param int $id the templateid
* @return void
*/
function feedback_delete_template($id) {
global $DB;
$DB->delete_records("feedback_item", array("template"=>$id));
$DB->delete_records("feedback_template", array("id"=>$id));
}
/**
* creates new feedback_item-records from template.
* if $deleteold is set true so the existing items of the given feedback will be deleted
* if $deleteold is set false so the new items will be appanded to the old items
*
* @global object
* @param object $feedback
* @param int $templateid
* @param boolean $deleteold
*/
function feedback_items_from_template($feedback, $templateid, $deleteold = false) {
global $DB;
//get all templateitems
if(!$templitems = $DB->get_records('feedback_item', array('template'=>$templateid))) {
return false;
}
//if deleteold then delete all old items before
//get all items
if($deleteold) {
if($feedbackitems = $DB->get_records('feedback_item', array('feedback'=>$feedback->id))) {
//delete all items of this feedback
foreach($feedbackitems as $item) {
feedback_delete_item($item->id, false);
}
//delete tracking-data
$DB->delete_records('feedback_tracking', array('feedback'=>$feedback->id));
$DB->delete_records('feedback_completed', array('feedback'=>$feedback->id));
$DB->delete_records('feedback_completedtmp', array('feedback'=>$feedback->id));
$positionoffset = 0;
}
} else {
//if the old items are kept the new items will be appended
//therefor the new position has an offset
$positionoffset = $DB->count_records('feedback_item', array('feedback'=>$feedback->id));
}
foreach($templitems as $newitem) {
unset($newitem->id);
$newitem->feedback = $feedback->id;
$newitem->template = 0;
$newitem->position = $newitem->position + $positionoffset;
$DB->insert_record('feedback_item', $newitem);
}
}
/**
* get the list of available templates.
* if the $onlyown param is set true so only templates from own course will be served
* this is important for droping templates
*
* @global object
* @param object $course
* @param boolean $onlyown
* @return array the template recordsets
*/
function feedback_get_template_list($course, $onlyown = false) {
global $DB;
if ($onlyown) {
$templates = $DB->get_records('feedback_template', array('course'=>$course->id));
} else {
$templates = $DB->get_records_select('feedback_template', 'course = ? OR ispublic = 1', array($course->id));
}
return $templates;
}
////////////////////////////////////////////////
//Handling der Items
////////////////////////////////////////////////
////////////////////////////////////////////////
/**
* load the available item plugins from given subdirectory of $CFG->dirroot
* the default is "mod/feedback/item"
*
* @global object
* @param string $dir the subdir
* @return array pluginnames as string
*/
function feedback_load_feedback_items($dir = 'mod/feedback/item') {
global $CFG;
$names =get_list_of_plugins($dir);
$ret_names = array();
foreach($names as $name) {
require_once($CFG->dirroot.'/'.$dir.'/'.$name.'/lib.php');
if(class_exists('feedback_item_'.$name)) {
$ret_names[] = $name;
}
}
return $ret_names;
}
/**
* load the available item plugins to use as dropdown-options
*
* @global object
* @return array pluginnames as string
*/
function feedback_load_feedback_items_options() {
global $CFG;
$feedback_options = array("pagebreak" => get_string('add_pagebreak', 'feedback'));
if (!$feedback_names = feedback_load_feedback_items('mod/feedback/item')) {
return array();
}
foreach($feedback_names as $fn) {
$feedback_options[$fn] = get_string($fn,'feedback');
}
asort($feedback_options);
$feedback_options = array_merge( array(' ' => get_string('select')), $feedback_options );
return $feedback_options;
}
/**
* creates a new item-record
*
* @global object
* @param object $data the data from edit_item_form
* @return int the new itemid
*/
function feedback_create_item($data) {
global $DB;
$item = new object;
$item->feedback = $data->feedbackid;
$item->template=0;
if (isset($data->templateid)) {
$item->template = intval($data->templateid);
}
$itemname = trim($data->itemname);
$item->name = ($itemname ? $data->itemname : get_string('no_itemname', 'feedback'));
if (!empty($data->itemlabel)) {
$item->label = trim($data->itemlabel);
} else {
$item->label = get_string('no_itemlabel', 'feedback');
}
//get the used class from item-typ
$itemclass = 'feedback_item_'.$data->typ;
//get the instance of the item class
$itemobj = new $itemclass();
$item->presentation = $itemobj->get_presentation($data);
$item->hasvalue = $itemobj->get_hasvalue();
$item->typ = $data->typ;
$item->position = $data->position;
$item->required=0;
if (!empty($data->required)) {
$item->required = $data->required;
}
return $DB->insert_record('feedback_item', $item);
}
/**
* save the changes of a given item.
*
* @global object
* @param object $item
* @param object $data the data from edit_item_form
* @return boolean
*/
function feedback_update_item($item, $data = null){
global $DB;
if($data != null){
$itemname = trim($data->itemname);
$item->name = ($itemname ? $data->itemname : get_string('no_itemname', 'feedback'));
if (!empty($data->itemlabel)) {
$item->label = trim($data->itemlabel);
} else {
$item->label = get_string('no_itemlabel', 'feedback');
}
//get the used class from item-typ
$itemclass = 'feedback_item_'.$data->typ;
//get the instance of the item class
$itemobj = new $itemclass();
$item->presentation = $itemobj->get_presentation($data);
$item->required=0;
if (isset($data->required)) {
$item->required=$data->required;
}
}else {
$item->name = $item->name;
$item->presentation = $item->presentation;
}
return $DB->update_record("feedback_item", $item);
}
/**
* deletes a item and also deletes all related values
*
* @global object
* @param int $itemid
* @param boolean $renumber should the kept items renumbered Yes/No
* @return void
*/
function feedback_delete_item($itemid, $renumber = true){
global $DB;
$item = $DB->get_record('feedback_item', array('id'=>$itemid));
$DB->delete_records("feedback_value", array("item"=>$itemid));
$DB->delete_records("feedback_valuetmp", array("item"=>$itemid));
$DB->delete_records("feedback_item", array("id"=>$itemid));
if($renumber) {
feedback_renumber_items($item->feedback);
}
}
/**
* deletes all items of the given feedbackid
*
* @global object
* @param int $feedbackid
* @return void
*/
function feedback_delete_all_items($feedbackid){
global $DB;