mirror of
https://github.com/FH-Complete/FHC-Core.git
synced 2026-06-01 20:29:29 +00:00
Andreas Österreicher
410 lines
14 KiB
PHP
410 lines
14 KiB
PHP
<?php
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/* Copyright (C) 2006 Technikum-Wien
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*
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* Authors: Christian Paminger <christian.paminger@technikum-wien.at>,
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* Andreas Oesterreicher <andreas.oesterreicher@technikum-wien.at> and
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* Rudolf Hangl <rudolf.hangl@technikum-wien.at>.
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*/
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class student extends benutzer
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{
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//Tabellenspalten
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var $matrikelnr;
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var $prestudent_id;
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var $studiengang_kz;
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var $semester;
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var $verband;
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var $gruppe;
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var $ext_id_student;
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// *************************************************************************
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// * Konstruktor - Uebergibt die Connection und laedt optional einen Studenten
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// * @param $conn Datenbank-Connection
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// * $uid Student der geladen werden soll (default=null)
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// * $unicode Gibt an ob die Daten mit UNICODE Codierung
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// * oder LATIN9 Codierung verarbeitet werden sollen
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// *************************************************************************
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function student($conn, $uid=null, $unicode=false)
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{
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$this->conn = $conn;
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if($unicode!=null)
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{
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if($unicode)
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$qry = "SET CLIENT_ENCODING TO 'UNICODE';";
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else
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$qry = "SET CLIENT_ENCODING TO 'LATIN9';";
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if(!pg_query($conn,$qry))
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{
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$this->errormsg = 'Encoding konnte nicht gesetzt werden';
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return false;
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}
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}
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//Student laden
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if($uid!=null)
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$this->load($uid);
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}
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// **************************************************
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// * Laedt die Daten eines Studenten
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// * Wenn Studiensemester_kurzbz angegeben wird, dann werden
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// * Studiengang, Semester, Verband und Gruppe aus der Tabelle
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// * Studentlehrverband geholt.
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// * @param uid
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// * studiensemester_kurzbz
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// * @return true wenn ok, false im Fehlerfall
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// **************************************************
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function load($uid, $studiensemester_kurzbz=null)
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{
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if(!benutzer::load($uid))
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return false;
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if(is_null($studiensemester_kurzbz))
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$qry = "SELECT * FROM public.tbl_student WHERE student_uid='".addslashes($uid)."'";
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else
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$qry = "SELECT *, tbl_studentlehrverband.studiengang_kz as studiengang_kz, tbl_studentlehrverband.semester as semester,
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tbl_studentlehrverband.verband as verband, tbl_studentlehrverband.gruppe as gruppe
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FROM public.tbl_student JOIN public.tbl_studentlehrverband USING(student_uid)
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WHERE studiensemester_kurzbz='".addslashes($studiensemester_kurzbz)."' AND student_uid='".addslashes($uid)."'";
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if($result = pg_query($this->conn, $qry))
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{
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if($row = pg_fetch_object($result))
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{
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$this->uid = $row->student_uid;
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$this->matrikelnr = $row->matrikelnr;
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$this->prestudent_id = $row->prestudent_id;
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$this->studiengang_kz = $row->studiengang_kz;
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$this->semester = $row->semester;
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$this->verband = $row->verband;
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$this->gruppe = $row->gruppe;
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$this->updateamum = $row->updateamum;
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$this->updatevon = $row->updatevon;
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$this->insertamum = $row->insertamum;
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$this->insertvon = $row->insertvon;
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$this->ext_id = $row->ext_id;
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return true;
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}
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else
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{
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$this->errormsg = 'Kein Benutzer mit dieser UID vorhanden';
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return false;
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}
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}
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else
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{
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$this->errormsg = 'Fehler beim Auslesen des Studenten '.$qry;
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return false;
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}
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}
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// *******************************************
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// * Prueft die Variablen vor dem Speichern
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// * auf Gueltigkeit.
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// * @return true wenn ok, false im Fehlerfall
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// *******************************************
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function validate()
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{
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if(strlen($this->uid)>16)
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{
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$this->errormsg = 'UID darf nicht laenger als 16 Zeichen sein';
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return false;
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}
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if($this->uid=='')
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{
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$this->errormsg = 'UID muss eingegeben werden';
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return false;
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}
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if(strlen($this->matrikelnr)>15)
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{
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$this->errormsg = 'Matrikelnummer darf nicht laenger als 15 Zeichen sein';
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return false;
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}
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if(strlen($this->updatevon)>32)
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{
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$this->errormsg = 'Updatevon darf nicht laenger als 32 Zeichen sein';
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return false;
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}
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if($this->prestudent_id!='' && !is_numeric($this->prestudent_id))
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{
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$this->errormsg = 'Prestudent_id muss eine gueltige Zahl sein';
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return false;
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}
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if(!is_numeric($this->studiengang_kz))
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{
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$this->errormsg = 'Studiengang_id muss eine gueltige Zahl sein';
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return false;
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}
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if(!is_numeric($this->semester))
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{
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$this->errormsg = 'Semester muss ein gueltige Zahl sein';
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return false;
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}
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if(strlen($this->verband)>1)
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{
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$this->errormsg = 'Verband darf nicht laenger als 1 Zeichen sein';
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return false;
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}
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if(strlen($this->gruppe)>1)
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{
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$this->errormsg = 'Gruppe darf nicht laenger als 1 Zeichen sein';
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return false;
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}
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return true;
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}
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// ************************************************************
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// * Speichert die Studentendaten in die Datenbank
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// * Wenn $new auf true gesetzt ist wird ein neuer Datensatz
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// * angelegt, ansonsten der Datensatz mit $person_id upgedated
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// * @return true wenn erfolgreich, false im Fehlerfall
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// ************************************************************
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function save($new=null, $savebenutzer=true)
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{
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//Variablen checken
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if(!$this->validate())
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return false;
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pg_query($this->conn,'BEGIN;');
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if($new==null)
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$new = $this->new;
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if($savebenutzer)
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{
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//Basisdaten speichern
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if(!benutzer::save())
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{
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pg_query($this->conn,'ROLLBACK;');
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return false;
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}
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}
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if($new)
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{
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//Neuen Datensatz anlegen
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$qry = "INSERT INTO public.tbl_student(student_uid, matrikelnr, updateamum, updatevon, prestudent_id,
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studiengang_kz, semester, ext_id, verband, gruppe, insertamum, insertvon)
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VALUES('".addslashes($this->uid)."',".
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$this->addslashes($this->matrikelnr).",".
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$this->addslashes($this->updateamum).','.
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$this->addslashes($this->updatevon).','.
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$this->addslashes($this->prestudent_id).','.
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$this->studiengang_kz.','.
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$this->semester.','.
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($this->ext_id_student!=''?$this->ext_id_student:'null').','.
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($this->verband!=''?"'".addslashes($this->verband)."'":' ').','.
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($this->gruppe!=''?"'".addslashes($this->gruppe)."'":' ').','.
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$this->addslashes($this->insertamum).','.
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$this->addslashes($this->insertvon).');';
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}
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else
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{
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//Bestehenden Datensatz updaten
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$qry = 'UPDATE public.tbl_student SET'.
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' matrikelnr='.$this->addslashes($this->matrikelnr).','.
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' updateamum='.$this->addslashes($this->updateamum).','.
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' updatevon='.$this->addslashes($this->updatevon).','.
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//' prestudent_id='.$this->addslashes($this->prestudent_id).','.
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' studiengang_kz='.$this->studiengang_kz.','.
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' semester='.$this->semester.','.
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' ext_id='.($this->ext_id_student!=''?$this->ext_id_student:'null').','.
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' verband='.$this->addslashes($this->verband).','.
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' gruppe='.$this->addslashes($this->gruppe).
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" WHERE student_uid='".addslashes($this->uid)."';";
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}
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if(pg_query($this->conn,$qry))
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{
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pg_query($this->conn,'COMMIT;');
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//Log schreiben
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return true;
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}
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else
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{
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pg_query($this->conn,'ROLLBACK;');
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$this->errormsg = 'Fehler beim Speichern des Studenten-Datensatzes'.$qry;
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return false;
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}
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}
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/**
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* Rueckgabewert ist die Anzahl der Ergebnisse. Bei Fehler negativ und die
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* Fehlermeldung liegt in errormsg.
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* Wenn der Parameter stg_kz NULL ist tritt gruppe in Kraft.
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* @param string $einheit_kurzbz Einheit
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* @param string grp Gruppe
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* @param string ver Verband
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* @param integer sem Semester
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* @param integer stg_kz Kennzahl des Studiengangs
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* @return integer Anzahl der gefundenen Einträge; <b>negativ</b> bei Fehler
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*/
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function getStudents($stg_kz,$sem=null,$ver=null,$grp=null,$gruppe=null, $stsem=null)
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{
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$where = '';
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if ($gruppe!=null)
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{
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$where=" gruppe_kurzbz='".$gruppe."' AND tbl_benutzer.uid=tbl_benutzergruppe.uid";
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if($stsem!=null)
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$where.=" AND tbl_benutzergruppe.studiensemester_kurzbz='$stsem'";
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}
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else
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{
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if ($stg_kz>=0)
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{
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$where.=" tbl_studentlehrverband.studiengang_kz=$stg_kz";
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if ($sem!=null)
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$where.=" AND tbl_studentlehrverband.semester=$sem";
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if ($ver!=null)
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$where.=" AND tbl_studentlehrverband.verband='".$ver."'";
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if ($grp!=null)
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$where.=" AND tbl_studentlehrverband.gruppe='".$grp."'";
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}
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}
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if($stsem!=null)
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$where.=" AND tbl_studentlehrverband.studiensemester_kurzbz='$stsem'";
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//$sql_query="SELECT * FROM campus.vw_student WHERE $where ORDER by nachname,vorname";
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$sql_query = "SELECT *, tbl_student.semester as std_semester, tbl_student.verband as std_verband, tbl_student.gruppe as std_gruppe, tbl_student.studiengang_kz as std_studiengang_kz,
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tbl_studentlehrverband.studiengang_kz as lvb_studiengang_kz, tbl_studentlehrverband.semester as lvb_semester, tbl_studentlehrverband.verband as lvb_verband, tbl_studentlehrverband.gruppe as lvb_gruppe
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FROM public.tbl_person, public.tbl_student, public.tbl_benutzer, public.tbl_studentlehrverband";
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if($gruppe!=null)
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$sql_query.= ",public.tbl_benutzergruppe";
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$sql_query.= " WHERE tbl_person.person_id=tbl_benutzer.person_id AND tbl_benutzer.uid = tbl_student.student_uid AND tbl_studentlehrverband.student_uid=tbl_student.student_uid AND $where ORDER BY nachname, vorname";
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//echo $sql_query;
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if(!($erg=pg_query($this->conn, $sql_query)))
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{
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$this->errormsg=pg_errormessage($this->conn);
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return false;
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}
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$num_rows=pg_num_rows($erg);
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$result=array();
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for($i=0;$i<$num_rows;$i++)
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{
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$row=pg_fetch_object($erg,$i);
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$l=new student($this->conn, null, null);
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// Personendaten
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$l->uid=$row->uid;
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$l->person_id=$row->person_id;
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$l->prestudent_id=$row->prestudent_id;
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$l->titelpre=$row->titelpre;
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$l->titelpost=$row->titelpost;
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$l->vornamen=$row->vornamen;
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$l->vorname=$row->vorname;
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$l->nachname=$row->nachname;
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$l->gebdatum=$row->gebdatum;
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$l->gebort=$row->gebort;
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$l->gebzeit=$row->gebzeit;
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$l->svnr=$row->svnr;
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$l->foto=$row->foto;
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$l->anmerkungen=$row->anmerkungen;
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$l->aktiv=$row->aktiv=='t'?true:false;
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$l->alias=$row->alias;
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$l->homepage=$row->homepage;
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$l->updateamum=(isset($row->updateamum)?$row->updateamum:'');
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$l->updatevon=(isset($row->updatevon)?$row->updatevon:'');
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// Studentendaten
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$l->matrikelnr=$row->matrikelnr;
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$l->gruppe=$row->lvb_gruppe;
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$l->verband=$row->lvb_verband;
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$l->semester=$row->lvb_semester;
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$l->studiengang_kz=$row->lvb_studiengang_kz;
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//$l->stg_bezeichnung=$row->bezeichnung;
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// student in Array speichern
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$result[]=$l;
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}
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return $result;
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}
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function save_studentlehrverband($new=null)
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{
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if($new==null)
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$new = $this->new;
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if($new)
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{
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$qry = "INSERT INTO public.tbl_studentlehrverband (student_uid, studiensemester_kurzbz, studiengang_kz, semester, verband, gruppe, updateamum, updatevon, insertamum, insertvon)
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VALUES(".$this->addslashes($this->uid).','.
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$this->addslashes($this->studiensemester_kurzbz).','.
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$this->addslashes($this->studiengang_kz).','.
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$this->addslashes($this->semester).','.
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$this->addslashes(($this->verband==''?' ':$this->verband)).','.
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$this->addslashes(($this->gruppe==''?' ':$this->gruppe)).','.
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$this->addslashes($this->updateamum).','.
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$this->addslashes($this->updatevon).','.
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$this->addslashes($this->insertamum).','.
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$this->addslashes($this->insertvon).');';
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}
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else
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{
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$qry = "UPDATE public.tbl_studentlehrverband SET".
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" studiengang_kz=".$this->addslashes($this->studiengang_kz).",".
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" semester=".$this->addslashes($this->semester).",".
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" verband=".$this->addslashes(($this->verband==''?' ':$this->verband)).",".
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" gruppe=".$this->addslashes(($this->gruppe==''?' ':$this->gruppe)).",".
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" updateamum=".$this->addslashes($this->updateamum).",".
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" updatevon=".$this->addslashes($this->updatevon).
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" WHERE student_uid='".addslashes($this->uid)."' AND studiensemester_kurzbz='".addslashes($this->studiensemester_kurzbz)."'";
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}
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//echo $qry;
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if(pg_query($this->conn, $qry))
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{
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return true;
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}
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else
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{
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$this->errormsg = 'Fehler beim Speichern der Studentlehrverband zuordnung';
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return false;
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}
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}
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// ****************************************
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// * Laedt die UID anhand der Prestudent_id
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// * @param prestudent_id
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// * @return uid wenn ok, false wenn Fehler
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// ****************************************
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function getUid($prestudent_id)
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{
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$qry = "SELECT student_uid FROM public.tbl_student WHERE prestudent_id='$prestudent_id'";
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if($result = pg_query($this->conn, $qry))
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{
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if($row = pg_fetch_object($result))
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{
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return $row->student_uid;
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}
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else
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{
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$this->errormsg = 'Student nicht gefunden';
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return false;
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}
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}
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else
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{
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$this->errormsg = 'Fehler beim laden der Daten';
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return false;
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}
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}
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}
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?>
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