ilLMTracker Class Reference

Track access to ILIAS learning modules. More...

Collaboration diagram for ilLMTracker:

Public Member Functions
	trackAccess ($a_page_id)
	Track access to lm page. More...
	trackLastPageAccess ($usr_id, $lm_id, $obj_id)
	Track last accessed page for a learning module. More...
	setCurrentPage ($a_val)
	Set current page. More...
	getCurrentPage ()
	Get current page. More...
	getAllQuestionsCorrect ()
	Have all questoins been answered correctly (and questions exist)? More...
	getIconForLMObject ($a_node, $a_highlighted_node=0)
	Get icon for lm object. More...
	hasPredIncorrectAnswers ($a_obj_id, $a_ignore_unlock=false)
	Has predecessing incorrect answers. More...
	getBlockedUsersInformation ()
	Get blocked users information. More...

Static Public Member Functions
static	getInstance ($a_ref_id, $a_user_id=0)
	Get instance. More...
static	getInstanceByObjId ($a_obj_id, $a_user_id=0)
	Get instance. More...
static	_isNodeVisible ($a_node)
	Is node visible for the learner. More...

Data Fields
const	NOT_ATTEMPTED = 0
const	IN_PROGRESS = 1
const	COMPLETED = 2
const	FAILED = 3
const	CURRENT = 99

Static Public Attributes
static	$instances = array()
static	$instancesbyobj = array()

Protected Member Functions
	trackPageAndChapterAccess ($a_page_id)
	Track page and chapter access. More...
	loadLMTrackingData ()
	Load LM tracking data. More...
	determineProgressStatus ($a_obj_id, &$a_has_pred_incorrect_answers, &$a_has_pred_incorrect_not_unlocked_answers)
	Determine progress status of nodes. More...

Protected Attributes
	$db
	$lng
	$plugin_admin
	$user
	$lm_ref_id
	$lm_obj_id
	$lm_tree
	$lm_obj_ids = array()
	$tree_arr = array()
	$re_arr = array()
	$loaded_for_node = false
	$dirty = false
	$page_questions = array()
	$all_questions = array()
	$answer_status = array()
	$has_incorrect_answers = false
	$current_page_id = 0

Private Member Functions
	__construct ($a_id, $a_by_obj_id=false, $a_user_id)
	Constructor. More...

Detailed Description

Track access to ILIAS learning modules.

Author

Alex Killing alex..nosp@m.kill.nosp@m.ing@g.nosp@m.mx.d.nosp@m.e

Version

$Id$

Definition at line 12 of file class.ilLMTracker.php.

Constructor & Destructor Documentation

__construct()

ilLMTracker::__construct (   $a_id,   $a_by_obj_id = false,   $a_user_id  )

private

Constructor.

Parameters

ilObjLearningModule

$a_lm

learning module

Definition at line 66 of file class.ilLMTracker.php.

    {
        global $DIC;
 
        $this->db = $DIC->database();
        $this->lng = $DIC->language();
        $this->plugin_admin = $DIC["ilPluginAdmin"];
        $this->user = $DIC->user();
        $this->user_id = $a_user_id;
 
        if ($a_by_obj_id) {
            $this->lm_ref_id = 0;
            $this->lm_obj_id = $a_id;
        } else {
            $this->lm_ref_id = $a_id;
            $this->lm_obj_id = ilObject::_lookupObjId($a_id);
        }
 
        include_once("./Modules/LearningModule/classes/class.ilLMTree.php");
        $this->lm_tree = ilLMTree::getInstance($this->lm_obj_id);
    }

References $DIC, ilObject\_lookupObjId(), ilLMTree\getInstance(), and user().

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Member Function Documentation

_isNodeVisible()

static ilLMTracker::_isNodeVisible (   $a_node )

static

Is node visible for the learner.

Parameters

mixed

$a_node

node object/array

Returns

boolean node visible true/false

Definition at line 628 of file class.ilLMTracker.php.

    {
        include_once("./Services/COPage/classes/class.ilPageObject.php");
 
        if ($a_node["type"] != "pg") {
            return true;
        }
 
        $lm_set = new ilSetting("lm");
        $active = ilPageObject::_lookupActive(
            $a_node["child"],
            "lm",
            $lm_set->get("time_scheduled_page_activation")
        );
 
        if (!$active) {
            $act_data = ilPageObject::_lookupActivationData((int) $a_node["child"], "lm");
            if ($act_data["show_activation_info"] &&
                (ilUtil::now() < $act_data["activation_start"])) {
                return true;
            } else {
                return false;
            }
        } else {
            return true;
        }
    }

References $lm_set, ilPageObject\_lookupActivationData(), ilPageObject\_lookupActive(), and ilUtil\now().

Referenced by ilLMTOCExplorerGUI\isNodeVisible().

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determineProgressStatus()

ilLMTracker::determineProgressStatus (   $a_obj_id, &  $a_has_pred_incorrect_answers, &  $a_has_pred_incorrect_not_unlocked_answers  )

protected

Determine progress status of nodes.

Parameters

int

$a_obj_id

lm object id

Returns

int status

Definition at line 417 of file class.ilLMTracker.php.

    {
        $status = ilLMTracker::NOT_ATTEMPTED;
 
        if (isset($this->tree_arr["nodes"][$a_obj_id])) {
            $this->tree_arr["nodes"][$a_obj_id]["has_pred_incorrect_answers"] = $a_has_pred_incorrect_answers;
            $this->tree_arr["nodes"][$a_obj_id]["has_pred_incorrect_not_unlocked_answers"] = $a_has_pred_incorrect_not_unlocked_answers;
 
            if (is_array($this->tree_arr["childs"][$a_obj_id])) {
                // sort childs in correct order
                $this->tree_arr["childs"][$a_obj_id] = ilUtil::sortArray($this->tree_arr["childs"][$a_obj_id], "lft", "asc", true);
 
                $cnt_completed = 0;
                foreach ($this->tree_arr["childs"][$a_obj_id] as $c) {
                    // if child is not activated/displayed count child as implicitly completed
                    // rationale: everything that is visible for the learner determines the status
                    // see also bug #14642
                    if (!self::_isNodeVisible($c)) {
                        $cnt_completed++;
                        continue;
                    }
                    $c_stat = $this->determineProgressStatus(
                        $c["child"],
                        $a_has_pred_incorrect_answers,
                        $a_has_pred_incorrect_not_unlocked_answers
                    );
                    if ($status != ilLMTracker::FAILED) {
                        if ($c_stat == ilLMTracker::FAILED) {
                            $status = ilLMTracker::IN_PROGRESS;
                        } elseif ($c_stat == ilLMTracker::IN_PROGRESS) {
                            $status = ilLMTracker::IN_PROGRESS;
                        } elseif ($c_stat == ilLMTracker::COMPLETED || $c_stat == ilLMTracker::CURRENT) {
                            $status = ilLMTracker::IN_PROGRESS;
                            $cnt_completed++;
                        }
                    }
                    // if an item is failed or in progress or (not attempted and contains questions)
                    // the next item has predecessing incorrect answers
                    if ($this->tree_arr["nodes"][$c["child"]]["type"] == "pg") {
                        if ($c_stat == ilLMTracker::FAILED || $c_stat == ilLMTracker::IN_PROGRESS ||
                            ($c_stat == ilLMTracker::NOT_ATTEMPTED && is_array($this->page_questions[$c["child"]]) && count($this->page_questions[$c["child"]]) > 0)) {
                            $a_has_pred_incorrect_answers = true;
                            if (!$this->tree_arr["nodes"][$c["child"]]["unlocked"]) {
                                $a_has_pred_incorrect_not_unlocked_answers = true;
                            }
                        }
                    }
                }
                if ($cnt_completed == count($this->tree_arr["childs"][$a_obj_id])) {
                    $status = ilLMTracker::COMPLETED;
                }
            } elseif ($this->tree_arr["nodes"][$a_obj_id]["type"] == "pg") {
                // check read event data
                if (isset($this->re_arr[$a_obj_id]) && $this->re_arr[$a_obj_id]["read_count"] > 0) {
                    $status = ilLMTracker::COMPLETED;
                } elseif ($a_obj_id == $this->getCurrentPage()) {
                    $status = ilLMTracker::CURRENT;
                }
 
                $unlocked = false;
                if (is_array($this->page_questions[$a_obj_id])) {
                    // check questions, if one is failed -> failed
                    $unlocked = true;
                    foreach ($this->page_questions[$a_obj_id] as $q_id) {
                        if (is_array($this->answer_status[$q_id])
                            && $this->answer_status[$q_id]["try"] > 0
                            && !$this->answer_status[$q_id]["passed"]) {
                            $status = ilLMTracker::FAILED;
                            if (!$this->answer_status[$q_id]["unlocked"]) {
                                $unlocked = false;
                            }
                        }
                    }
 
                    // check questions, if one is not answered -> in progress
                    if ($status != ilLMTracker::FAILED) {
                        foreach ($this->page_questions[$a_obj_id] as $q_id) {
                            if (!is_array($this->answer_status[$q_id])
                                || $this->answer_status[$q_id]["try"] == 0) {
                                if ($status != ilLMTracker::NOT_ATTEMPTED) {
                                    $status = ilLMTracker::IN_PROGRESS;
                                }
                            }
                        }
                        $unlocked = false;
                    }
                }
                $this->tree_arr["nodes"][$a_obj_id]["unlocked"] = $unlocked;
                $this->tree_arr["nodes"][$a_obj_id]["has_pred_incorrect_answers"] = $a_has_pred_incorrect_answers;
                $this->tree_arr["nodes"][$a_obj_id]["has_pred_incorrect_not_unlocked_answers"] = $a_has_pred_incorrect_not_unlocked_answers;
            }
        } else {        // free pages (currently not called, since only walking through tree structure)
        }
        $this->tree_arr["nodes"][$a_obj_id]["status"] = $status;
 
        return $status;
    }

References COMPLETED, CURRENT, determineProgressStatus(), FAILED, getCurrentPage(), IN_PROGRESS, NOT_ATTEMPTED, and ilUtil\sortArray().

Referenced by determineProgressStatus(), and loadLMTrackingData().

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getAllQuestionsCorrect()

ilLMTracker::getAllQuestionsCorrect

(

)

Have all questoins been answered correctly (and questions exist)?

Returns

bool true, if learning module contains any question and all questions (in the chapter structure) have been answered correctly

Definition at line 401 of file class.ilLMTracker.php.

    {
        $this->loadLMTrackingData();
        if (count($this->all_questions) > 0 && !$this->has_incorrect_answers) {
            return true;
        }
        return false;
    }

References loadLMTrackingData().

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getBlockedUsersInformation()

ilLMTracker::getBlockedUsersInformation

(

)

Get blocked users information.

Parameters

return

Definition at line 574 of file class.ilLMTracker.php.

    {
        $ilDB = $this->db;
        $lng = $this->lng;
        $ilPluginAdmin = $this->plugin_admin;
        $ilUser = $this->user;
 
        $blocked_users = array();
 
        // load question/pages information
        $this->page_questions = array();
        $this->all_questions = array();
        $page_for_question = array();
        include_once("./Modules/LearningModule/classes/class.ilLMPageObject.php");
        $q = ilLMPageObject::queryQuestionsOfLearningModule($this->lm_obj_id, "", "", 0, 0);
        foreach ($q["set"] as $quest) {
            $this->page_questions[$quest["page_id"]][] = $quest["question_id"];
            $this->all_questions[] = $quest["question_id"];
            $page_for_question[$quest["question_id"]] = $quest["page_id"];
        }
        // get question information
        include_once("./Modules/TestQuestionPool/classes/class.ilAssQuestionList.php");
        $qlist = new ilAssQuestionList($ilDB, $lng, $ilPluginAdmin);
        $qlist->setParentObjId(0);
        $qlist->setJoinObjectData(false);
        $qlist->addFieldFilter("question_id", $this->all_questions);
        $qlist->load();
        $qdata = $qlist->getQuestionDataArray();
 
        // load question answer information
        include_once("./Services/COPage/classes/class.ilPageQuestionProcessor.php");
        $this->answer_status = ilPageQuestionProcessor::getAnswerStatus($this->all_questions);
        include_once("./Modules/LearningModule/classes/class.ilLMPageObject.php");
        foreach ($this->answer_status as $as) {
            if ($as["try"] >= $qdata[$as["qst_id"]]["nr_of_tries"] && $qdata[$as["qst_id"]]["nr_of_tries"] > 0 && !$as["passed"]) {
                //var_dump($qdata[$as["qst_id"]]);
                $name = ilObjUser::_lookupName($as["user_id"]);
                $as["user_name"] = $name["lastname"] . ", " . $name["firstname"] . " [" . $name["login"] . "]";
                $as["question_text"] = $qdata[$as["qst_id"]]["question_text"];
                $as["page_id"] = $page_for_question[$as["qst_id"]];
                $as["page_title"] = ilLMPageObject::_lookupTitle($as["page_id"]);
                $blocked_users[] = $as;
            }
        }
 
        return $blocked_users;
    }

References $as, $db, $ilDB, $ilUser, $lng, $name, $plugin_admin, $user, ilObjUser\_lookupName(), ilLMObject\_lookupTitle(), ilPageQuestionProcessor\getAnswerStatus(), and ilLMPageObject\queryQuestionsOfLearningModule().

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getCurrentPage()

ilLMTracker::getCurrentPage

(

)

Get current page.

Returns

id current page id

Definition at line 325 of file class.ilLMTracker.php.

    {
        return $this->current_page_id;
    }

References $current_page_id.

Referenced by determineProgressStatus(), and loadLMTrackingData().

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getIconForLMObject()

ilLMTracker::getIconForLMObject	(		$a_node,
			$a_highlighted_node = 0
	)

Get icon for lm object.

Parameters

array	$a_node	node array
int	$a_highlighted_node	current node id

Returns

string image path

Definition at line 523 of file class.ilLMTracker.php.

    {
        $this->loadLMTrackingData();
        if ($a_node["child"] == $a_highlighted_node) {
            return ilUtil::getImagePath('scorm/running.svg');
        }
        if (isset($this->tree_arr["nodes"][$a_node["child"]])) {
            switch ($this->tree_arr["nodes"][$a_node["child"]]["status"]) {
                case ilLMTracker::IN_PROGRESS:
                    return ilUtil::getImagePath('scorm/incomplete.svg');
 
                case ilLMTracker::FAILED:
                    return ilUtil::getImagePath('scorm/failed.svg');
 
                case ilLMTracker::COMPLETED:
                    return ilUtil::getImagePath('scorm/completed.svg');
            }
        }
        return ilUtil::getImagePath('scorm/not_attempted.svg');
    }

References COMPLETED, FAILED, ilUtil\getImagePath(), IN_PROGRESS, and loadLMTrackingData().

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getInstance()

static ilLMTracker::getInstance (   $a_ref_id,   $a_user_id = 0  )

static

Get instance.

Parameters

return

Definition at line 94 of file class.ilLMTracker.php.

    {
        global $DIC;
 
        $ilUser = $DIC->user();
 
        if ($a_user_id == 0) {
            $a_user_id = $ilUser->getId();
        }
 
        if (!isset(self::$instances[$a_ref_id][$a_user_id])) {
            self::$instances[$a_ref_id][$a_user_id] = new ilLMTracker($a_ref_id, false, $a_user_id);
        }
        return self::$instances[$a_ref_id][$a_user_id];
    }

References $DIC, and $ilUser.

Referenced by ilLMPresentationGUI\getTracker().

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getInstanceByObjId()

static ilLMTracker::getInstanceByObjId (   $a_obj_id,   $a_user_id = 0  )

static

Get instance.

Parameters

return

Definition at line 116 of file class.ilLMTracker.php.

    {
        global $DIC;
 
        $ilUser = $DIC->user();
 
        if ($a_user_id == 0) {
            $a_user_id = $ilUser->getId();
        }
 
        if (!isset(self::$instancesbyobj[$a_obj_id][$a_user_id])) {
            self::$instancesbyobj[$a_obj_id][$a_user_id] = new ilLMTracker($a_obj_id, true, $a_user_id);
        }
        return self::$instancesbyobj[$a_obj_id][$a_user_id];
    }

References $DIC, and $ilUser.

Referenced by ilLPStatusQuestions\_getCompleted(), and ilLPStatusQuestions\determineStatus().

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hasPredIncorrectAnswers()

ilLMTracker::hasPredIncorrectAnswers	(		$a_obj_id,
			$a_ignore_unlock = false
	)

Has predecessing incorrect answers.

Parameters

int

$a_obj_id

Returns

bool true if incorrect/unsanswered questions exist in predecessing pages

Definition at line 550 of file class.ilLMTracker.php.

    {
        $this->loadLMTrackingData();
        $ret = false;
        if (is_array($this->tree_arr["nodes"][$a_obj_id])) {
            if ($a_ignore_unlock) {
                $ret = $this->tree_arr["nodes"][$a_obj_id]["has_pred_incorrect_answers"];
            } else {
                $ret = $this->tree_arr["nodes"][$a_obj_id]["has_pred_incorrect_not_unlocked_answers"];
            }
        }
        return $ret;
    }

References $ret, and loadLMTrackingData().

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loadLMTrackingData()

ilLMTracker::loadLMTrackingData ( )

protected

Load LM tracking data.

Loaded when needed.

Parameters

return

Definition at line 336 of file class.ilLMTracker.php.

    {
        $ilDB = $this->db;
 
        // we must prevent loading tracking data multiple times during a request where possible
        // please note that the dirty flag works only to a certain limit
        // e.g. if questions are answered the flag is not set (yet)
        // or if pages/chapter are added/deleted the flag is not set
        if ($this->loaded_for_node === (int) $this->getCurrentPage() && !$this->dirty) {
            return;
        }
 
        $this->loaded_for_node = (int) $this->getCurrentPage();
        $this->dirty = false;
 
        // load lm tree in array
        $this->tree_arr = array();
        $nodes = $this->lm_tree->getSubTree($this->lm_tree->getNodeData($this->lm_tree->readRootId()));
        foreach ($nodes as $node) {
            $this->tree_arr["childs"][$node["parent"]][] = $node;
            $this->tree_arr["parent"][$node["child"]] = $node["parent"];
            $this->tree_arr["nodes"][$node["child"]] = $node;
        }
 
        // load all lm obj ids of learning module
        include_once("./Modules/LearningModule/classes/class.ilLMObject.php");
        $this->lm_obj_ids = ilLMObject::_getAllLMObjectsOfLM($this->lm_obj_id);
 
        // load read event data
        $this->re_arr = array();
        $set = $ilDB->query("SELECT * FROM lm_read_event " .
            " WHERE " . $ilDB->in("obj_id", $this->lm_obj_ids, false, "integer") .
            " AND usr_id = " . $ilDB->quote($this->user_id, "integer"));
        while ($rec = $ilDB->fetchAssoc($set)) {
            $this->re_arr[$rec["obj_id"]] = $rec;
        }
 
        // load question/pages information
        $this->page_questions = array();
        $this->all_questions = array();
        include_once("./Modules/LearningModule/classes/class.ilLMPageObject.php");
        $q = ilLMPageObject::queryQuestionsOfLearningModule($this->lm_obj_id, "", "", 0, 0);
        foreach ($q["set"] as $quest) {
            $this->page_questions[$quest["page_id"]][] = $quest["question_id"];
            $this->all_questions[] = $quest["question_id"];
        }
 
        // load question answer information
        include_once("./Services/COPage/classes/class.ilPageQuestionProcessor.php");
        $this->answer_status = ilPageQuestionProcessor::getAnswerStatus($this->all_questions, $this->user_id);
 
        $this->has_incorrect_answers = false;
 
        $has_pred_incorrect_answers = false;
        $has_pred_incorrect_not_unlocked_answers = false;
        $this->determineProgressStatus($this->lm_tree->readRootId(), $has_pred_incorrect_answers, $has_pred_incorrect_not_unlocked_answers);
 
        $this->has_incorrect_answers = $has_pred_incorrect_answers;
    }

References $db, $ilDB, ilLMObject\_getAllLMObjectsOfLM(), determineProgressStatus(), ilPageQuestionProcessor\getAnswerStatus(), getCurrentPage(), and ilLMPageObject\queryQuestionsOfLearningModule().

Referenced by getAllQuestionsCorrect(), getIconForLMObject(), and hasPredIncorrectAnswers().

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setCurrentPage()

ilLMTracker::setCurrentPage

(

$a_val

)

Set current page.

Parameters

id

$a_val

current page id

Definition at line 315 of file class.ilLMTracker.php.

    {
        $this->current_page_id = $a_val;
    }

trackAccess()

ilLMTracker::trackAccess

(

$a_page_id

)

Track access to lm page.

Parameters

int

$a_page_id

page id

Definition at line 141 of file class.ilLMTracker.php.

    {
        if ($this->lm_ref_id == 0) {
            die("ilLMTracker: No Ref Id given.");
        }
 
        // track page and chapter access
        $this->trackPageAndChapterAccess($a_page_id);
 
        // track last page access (must be done after calling trackPageAndChapterAccess())
        $this->trackLastPageAccess($this->user_id, $this->lm_ref_id, $a_page_id);
 
        // #9483
        // general learning module lp tracking
        include_once("./Services/Tracking/classes/class.ilLearningProgress.php");
        ilLearningProgress::_tracProgress(
            $this->user_id,
            $this->lm_obj_id,
            $this->lm_ref_id,
            "lm"
        );
 
        // obsolete?
        include_once("./Services/Tracking/classes/class.ilLPStatusWrapper.php");
        ilLPStatusWrapper::_updateStatus($this->lm_obj_id, $this->user_id);
 
        // mark currently loaded data as dirty to force reload if necessary
        $this->dirty = true;
    }

References ilLearningProgress\_tracProgress(), ilLPStatusWrapper\_updateStatus(), trackLastPageAccess(), and trackPageAndChapterAccess().

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trackLastPageAccess()

ilLMTracker::trackLastPageAccess	(		$usr_id,
			$lm_id,
			$obj_id
	)

Track last accessed page for a learning module.

Parameters

int	$usr_id	user id
int	$lm_id	learning module id
int	$obj_id	page id

Definition at line 178 of file class.ilLMTracker.php.

    {
        $ilDB = $this->db;
 
        // first check if an entry for this user and this lm already exist, when so, delete
        $q = "DELETE FROM lo_access " .
            "WHERE usr_id = " . $ilDB->quote((int) $usr_id, "integer") . " " .
            "AND lm_id = " . $ilDB->quote((int) $lm_id, "integer");
        $ilDB->manipulate($q);
 
        $title = "";
 
        $q = "INSERT INTO lo_access " .
            "(timestamp,usr_id,lm_id,obj_id,lm_title) " .
            "VALUES " .
            "(" . $ilDB->now() . "," .
            $ilDB->quote((int) $usr_id, "integer") . "," .
            $ilDB->quote((int) $lm_id, "integer") . "," .
            $ilDB->quote((int) $obj_id, "integer") . "," .
            $ilDB->quote($title, "text") . ")";
        $ilDB->manipulate($q);
    }

References $db, $ilDB, and $title.

Referenced by trackAccess().

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trackPageAndChapterAccess()

ilLMTracker::trackPageAndChapterAccess (   $a_page_id )

protected

Track page and chapter access.

Definition at line 205 of file class.ilLMTracker.php.

    {
        $ilDB = $this->db;
 
        $now = time();
 
        //
        // 1. Page access: current page
        //
        $set = $ilDB->query("SELECT obj_id FROM lm_read_event" .
            " WHERE obj_id = " . $ilDB->quote($a_page_id, "integer") .
            " AND usr_id = " . $ilDB->quote($this->user_id, "integer"));
        if (!$ilDB->fetchAssoc($set)) {
            $fields = array(
                "obj_id" => array("integer", $a_page_id),
                "usr_id" => array("integer", $this->user_id)
            );
            // $ilDB->insert("lm_read_event", $fields);
            $ilDB->replace("lm_read_event", $fields, array()); // #15144
        }
 
        // update all parent chapters
        $ilDB->manipulate("UPDATE lm_read_event SET" .
            " read_count = read_count + 1 " .
            " , last_access = " . $ilDB->quote($now, "integer") .
            " WHERE obj_id = " . $ilDB->quote($a_page_id, "integer") .
            " AND usr_id = " . $ilDB->quote($this->user_id, "integer"));
 
 
        //
        // 2. Chapter access: based on last page accessed
        //
 
        // get last accessed page
        $set = $ilDB->query("SELECT * FROM lo_access WHERE " .
            "usr_id = " . $ilDB->quote($this->user_id, "integer") . " AND " .
            "lm_id = " . $ilDB->quote($this->lm_ref_id, "integer"));
        $res = $ilDB->fetchAssoc($set);
        if ($res["obj_id"]) {
            include_once('Services/Tracking/classes/class.ilObjUserTracking.php');
            $valid_timespan = ilObjUserTracking::_getValidTimeSpan();
 
            $pg_ts = new ilDateTime($res["timestamp"], IL_CAL_DATETIME);
            $pg_ts = $pg_ts->get(IL_CAL_UNIX);
            $pg_id = $res["obj_id"];
            if (!$this->lm_tree->isInTree($pg_id)) {
                return;
            }
            
            $time_diff = $read_diff = 0;
 
            // spent_seconds or read_count ?
            if (($now-$pg_ts) <= $valid_timespan) {
                $time_diff = $now-$pg_ts;
            } else {
                $read_diff = 1;
            }
 
            // find parent chapter(s) for that page
            $parent_st_ids = array();
            foreach ($this->lm_tree->getPathFull($pg_id) as $item) {
                if ($item["type"] == "st") {
                    $parent_st_ids[] = $item["obj_id"];
                }
            }
 
            if ($parent_st_ids && ($time_diff || $read_diff)) {
                // get existing chapter entries
                $ex_st = array();
                $set = $ilDB->query("SELECT obj_id FROM lm_read_event" .
                    " WHERE " . $ilDB->in("obj_id", $parent_st_ids, "", "integer") .
                    " AND usr_id = " . $ilDB->quote($this->user_id, "integer"));
                while ($row = $ilDB->fetchAssoc($set)) {
                    $ex_st[] = $row["obj_id"];
                }
 
                // add missing chapter entries
                $missing_st = array_diff($parent_st_ids, $ex_st);
                if (sizeof($missing_st)) {
                    foreach ($missing_st as $st_id) {
                        $fields = array(
                            "obj_id" => array("integer", $st_id),
                            "usr_id" => array("integer", $this->user_id)
                        );
                        // $ilDB->insert("lm_read_event", $fields);
                        $ilDB->replace("lm_read_event", $fields, array()); // #15144
                    }
                }
 
                // update all parent chapters
                $ilDB->manipulate("UPDATE lm_read_event SET" .
                    " read_count = read_count + " . $ilDB->quote($read_diff, "integer") .
                    " , spent_seconds = spent_seconds + " . $ilDB->quote($time_diff, "integer") .
                    " , last_access = " . $ilDB->quote($now, "integer") .
                    " WHERE " . $ilDB->in("obj_id", $parent_st_ids, "", "integer") .
                    " AND usr_id = " . $ilDB->quote($this->user_id, "integer"));
            }
        }
    }

References $db, $ilDB, $res, $row, ilObjUserTracking\_getValidTimeSpan(), IL_CAL_DATETIME, and IL_CAL_UNIX.

Referenced by trackAccess().

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Field Documentation

$all_questions

ilLMTracker::$all_questions = array()

protected

Definition at line 49 of file class.ilLMTracker.php.

$answer_status

ilLMTracker::$answer_status = array()

protected

Definition at line 50 of file class.ilLMTracker.php.

$current_page_id

ilLMTracker::$current_page_id = 0

protected

Definition at line 52 of file class.ilLMTracker.php.

Referenced by getCurrentPage().

$db

ilLMTracker::$db

protected

Definition at line 17 of file class.ilLMTracker.php.

Referenced by getBlockedUsersInformation(), loadLMTrackingData(), trackLastPageAccess(), and trackPageAndChapterAccess().

$dirty

ilLMTracker::$dirty = false

protected

Definition at line 47 of file class.ilLMTracker.php.

$has_incorrect_answers

ilLMTracker::$has_incorrect_answers = false

protected

Definition at line 51 of file class.ilLMTracker.php.

$instances

ilLMTracker::$instances = array()

static

Definition at line 54 of file class.ilLMTracker.php.

$instancesbyobj

ilLMTracker::$instancesbyobj = array()

static

Definition at line 55 of file class.ilLMTracker.php.

$lm_obj_id

ilLMTracker::$lm_obj_id

protected

Definition at line 41 of file class.ilLMTracker.php.

$lm_obj_ids

ilLMTracker::$lm_obj_ids = array()

protected

Definition at line 43 of file class.ilLMTracker.php.

$lm_ref_id

ilLMTracker::$lm_ref_id

protected

Definition at line 40 of file class.ilLMTracker.php.

$lm_tree

ilLMTracker::$lm_tree

protected

Definition at line 42 of file class.ilLMTracker.php.

$lng

ilLMTracker::$lng

protected

Definition at line 22 of file class.ilLMTracker.php.

Referenced by getBlockedUsersInformation().

$loaded_for_node

ilLMTracker::$loaded_for_node = false

protected

Definition at line 46 of file class.ilLMTracker.php.

$page_questions

ilLMTracker::$page_questions = array()

protected

Definition at line 48 of file class.ilLMTracker.php.

$plugin_admin

ilLMTracker::$plugin_admin

protected

Definition at line 27 of file class.ilLMTracker.php.

Referenced by getBlockedUsersInformation().

$re_arr

ilLMTracker::$re_arr = array()

protected

Definition at line 45 of file class.ilLMTracker.php.

$tree_arr

ilLMTracker::$tree_arr = array()

protected

Definition at line 44 of file class.ilLMTracker.php.

$user

ilLMTracker::$user

protected

Definition at line 32 of file class.ilLMTracker.php.

Referenced by getBlockedUsersInformation().

COMPLETED

const ilLMTracker::COMPLETED = 2

Definition at line 36 of file class.ilLMTracker.php.

Referenced by determineProgressStatus(), and getIconForLMObject().

CURRENT

const ilLMTracker::CURRENT = 99

Definition at line 38 of file class.ilLMTracker.php.

Referenced by determineProgressStatus().

FAILED

const ilLMTracker::FAILED = 3

Definition at line 37 of file class.ilLMTracker.php.

Referenced by determineProgressStatus(), and getIconForLMObject().

IN_PROGRESS

const ilLMTracker::IN_PROGRESS = 1

Definition at line 35 of file class.ilLMTracker.php.

Referenced by determineProgressStatus(), and getIconForLMObject().

NOT_ATTEMPTED

const ilLMTracker::NOT_ATTEMPTED = 0

Definition at line 34 of file class.ilLMTracker.php.

Referenced by determineProgressStatus().

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The documentation for this class was generated from the following file:

• Modules/LearningModule/classes/class.ilLMTracker.php