course/classes/Event/class.ilEventParticipants.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program 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 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program 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 this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/


class ilEventParticipants
{
        var $ilErr;
        var $ilDB;
        var $tree;
        var $lng;

        var $event_id = null;

        function ilEventParticipants($a_event_id)
        {
                global $ilErr,$ilDB,$lng,$tree;

                $this->ilErr =& $ilErr;
                $this->db  =& $ilDB;
                $this->lng =& $lng;

                $this->event_id = $a_event_id;
                $this->__read();
        }

        function setUserId($a_usr_id)
        {
                $this->user_id = $a_usr_id;
        }
        function getUserId()
        {
                return $this->user_id;
        }
        function setMark($a_mark)
        {
                $this->mark = $a_mark;
        }
        function getMark()
        {
                return $this->mark;
        }
        function setComment($a_comment)
        {
                $this->comment = $a_comment;
        }
        function getComment()
        {
                return $this->comment;
        }
        function setParticipated($a_status)
        {
                $this->participated = $a_status;
        }
        function getParticipated()
        {
                return $this->participated;
        }
        function setRegistered($a_status)
        {
                $this->registered = $a_status;
        }
        function getRegistered()
        {
                return $this->registered;
        }
        function updateUser()
        {
                $query = "DELETE FROM event_participants ".
                        "WHERE event_id = '".$this->getEventId()."' ".
                        "AND usr_id = '".$this->getUserId()."'";
                $this->db->query($query);

                $query = "INSERT INTO event_participants ".
                        "SET event_id = '".$this->getEventId()."', ".
                        "usr_id = '".$this->getUserId()."', ".
                        "registered = '".(int) $this->getRegistered()."', ".
                        "participated = '".(int) $this->getParticipated()."', ".
                        "mark = '".ilUtil::prepareDBString($this->getMark())."', ".
                        "comment = '".ilUtil::prepareDBString($this->getComment())."'";
                $this->db->query($query);
                return true;
        }

        function getUser($a_usr_id)
        {
                return $this->participants[$a_usr_id] ? $this->participants[$a_usr_id] : array();
        }

        function getParticipants()
        {
                return $this->participants ? $this->participants : array();
        }

        function isRegistered($a_usr_id)
        {
                return $this->participants[$a_usr_id]['registered'] ? true : false;
        }

        function hasParticipated($a_usr_id)
        {
                return $this->participants[$a_usr_id]['participated'] ? true : false;
        }

        function updateParticipation($a_usr_id,$a_status)
        {
                ilEventParticipants::_updateParticipation($a_usr_id,$this->getEventId(),$a_status);
        }

        function _updateParticipation($a_usr_id,$a_event_id,$a_status)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND usr_id = '".$a_usr_id."'";
                $res = $ilDB->query($query);
                if($res->numRows())
                {
                        $query = "UPDATE event_participants ".
                                "SET participated = '".(int) $a_status."' ".
                                "WHERE event_id = '".$a_event_id."' ".
                                "AND usr_id = '".$a_usr_id."'";
                        $ilDB->query($query);
                }
                else
                {
                        $query = "INSERT INTO event_participants ".
                                "SET registered = '0', ".
                                "participated = '".(int) $a_status."', ".
                                "event_id = '".$a_event_id."', ".
                                "usr_id = '".$a_usr_id."'";
                        $ilDB->query($query);
                }
                return true;
        }

        function _getRegistered($a_event_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND registered = '1'";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $user_ids[] = $row->usr_id;
                }
                return $user_ids ? $user_ids : array();
        }

        function _getParticipated($a_event_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND participated = '1'";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $user_ids[] = $row->usr_id;
                }
                return $user_ids ? $user_ids : array();
        }

        function _isRegistered($a_usr_id,$a_event_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND usr_id = '".$a_usr_id."'";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return (bool) $row->registered;
                }
                return false;
        }

        function _register($a_usr_id,$a_event_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND usr_id = '".$a_usr_id."'";
                $res = $ilDB->query($query);
                if($res->numRows())
                {
                        $query = "UPDATE event_participants ".
                                "SET registered = '1' ".
                                "WHERE event_id = '".$a_event_id."' ".
                                "AND usr_id = '".$a_usr_id."'";
                        $ilDB->query($query);
                }
                else
                {
                        $query = "INSERT INTO event_participants ".
                                "SET registered = '1', ".
                                "participated = '0', ".
                                "event_id = '".$a_event_id."', ".
                                "usr_id = '".$a_usr_id."'";
                        $ilDB->query($query);
                }
                return true;
        }
        function register($a_usr_id)
        {
                return ilEventParticipants::_register($a_usr_id,$this->getEventId());
        }
                        
        function _unregister($a_usr_id,$a_event_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND usr_id = '".$a_usr_id."'";
                $res = $ilDB->query($query);
                if($res->numRows())
                {
                        $query = "UPDATE event_participants ".
                                "SET registered = '0' ".
                                "WHERE event_id = '".$a_event_id."' ".
                                "AND usr_id = '".$a_usr_id."'";
                        $ilDB->query($query);
                }
                else
                {
                        $query = "INSERT INTO event_participants ".
                                "SET registered = '0', ".
                                "participated = '0' ".
                                "event_id = '".$a_event_id."', ".
                                "usr_id = '".$a_usr_id."'";
                        $ilDB->query($query);
                }
                return true;
        }
        function unregister($a_usr_id)
        {
                return ilEventParticipants::_unregister($a_usr_id,$this->getEventId());
        }

        function _lookupMark($a_event_id,$a_usr_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND usr_id = '".$a_usr_id."'";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return $row->mark;
                }
                return '';
        }
        
        function _lookupComment($a_event_id,$a_usr_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."' ".
                        "AND usr_id = '".$a_usr_id."'";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return $row->comment;
                }
                return '';
        }


        function getEventId()
        {
                return $this->event_id;
        }
        function setEventId($a_event_id)
        {
                $this->event_id = $a_event_id;
        }

        function _deleteByEvent($a_event_id)
        {
                global $ilDB;

                $query = "DELETE FROM event_participants ".
                        "WHERE event_id = '".$a_event_id."'";
                $ilDB->query($query);
                return true;
        }
        function _deleteByUser($a_usr_id)
        {
                global $ilDB;
                
                $query = "DELETE FROM event_participants ".
                        "WHERE usr_id = '".$a_usr_id."'";
                $ilDB->query($query);
                return true;
        }


        // Private
        function __read()
        {
                $query = "SELECT * FROM event_participants ".
                        "WHERE event_id = '".$this->getEventId()."'";
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->participants[$row->usr_id]['usr_id'] = $row->usr_id;
                        $this->participants[$row->usr_id]['registered'] = $row->registered;
                        $this->participants[$row->usr_id]['participated'] = $row->participated;
                        $this->participants[$row->usr_id]['mark'] = $row->mark;
                        $this->participants[$row->usr_id]['comment'] = $row->comment;
                }
        }
}
?>