mirror of
https://github.com/FH-Complete/FHC-Core.git
synced 2026-06-01 20:29:29 +00:00
SimonGschnell
319 lines
13 KiB
PHP
319 lines
13 KiB
PHP
<?php
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class Stundenplan_model extends DB_Model
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{
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/**
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* Constructor
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*/
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public function __construct()
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{
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parent::__construct();
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$this->dbTable = 'lehre.tbl_stundenplan';
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$this->pk = 'stundenplan_id';
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}
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/**
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* @param string $ort_kurzbz
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* @param string $date
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*
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* @return stdClass
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*/
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public function getRoomDataOnInterval($ort_kurzbz,$start_date,$end_date){
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/*$raum_stundenplan= $this->execReadOnlyQuery("
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-- merging all reservierungs information with the stundenplan information but with different types
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SELECT 'stundenplan_eintrag' as eintrags_type, CONCAT(UPPER(sp.stg_typ),UPPER(sp.stg_kurzbz),'-',COALESCE(CAST(sp.semester AS varchar),'/'),COALESCE(CAST(sp.verband AS varchar),'/')) AS stg, CONCAT(lehrfach,'-',lehrform) AS lv_info, ort_kurzbz, studiengang_kz, uid, stunde, datum, titel, semester, verband, gruppe, gruppe_kurzbz, stg_kurzbz, * FROM lehre.vw_stundenplan sp
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WHERE ort_kurzbz = ? AND datum >= ? AND datum <= ?
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UNION ALL
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SELECT 'reservierungs_eintrag' as eintrags_type, NULL, NULL, ort_kurzbz, studiengang_kz, uid, stunde, datum, titel, semester, verband, gruppe, gruppe_kurzbz, stg_kurzbz, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL FROM lehre.vw_reservierung res
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WHERE ort_kurzbz = ? AND datum >= ? AND datum <= ?
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", [$ort_kurzbz, $start_date, $end_date,$ort_kurzbz, $start_date, $end_date]);
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*/
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$raum_stundenplan= $this->execReadOnlyQuery("
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SELECT CONCAT(UPPER(sp.stg_typ),UPPER(sp.stg_kurzbz),'-',COALESCE(CAST(sp.semester AS varchar),'/'),COALESCE(CAST(sp.verband AS varchar),'/')) AS stg, CONCAT(lehrfach,'-',lehrform) AS lv_info, * FROM lehre.vw_stundenplan sp
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WHERE ort_kurzbz = ? AND datum >= ? AND datum <= ?
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", [$ort_kurzbz, $start_date, $end_date]);
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return $raum_stundenplan;
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}
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/**
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* @param string $ort_kurzbz The room to query the planning for
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* @param string $start_date The start date of the query interval
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* @param string $end_date The end date of the query interval
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*
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* @return stdClass
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*/
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public function groupedCalendarEvents($ort_kurzbz,$start_date,$end_date){
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$gruppierteEvents= $this->execReadOnlyQuery("
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SELECT
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'reservierung' as type,
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NULL as unr,datum, stunde,
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titel AS topic,
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beschreibung as beschreibung,
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string_agg(DISTINCT gruppe, '/') as gruppe,
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string_agg(DISTINCT lektor, '/') as lektor,
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res.ort_kurzbz,res.studiengang_kz, res.titel, res.beschreibung,NULL as lehreinheit_id,NULL as lehrfach_id,NULL as anmerkung, NULL as fix,NULL as lehrveranstaltung_id,NULL as stg_kurzbzlang,NULL as stg_bezeichnung,NULL as stg_typ, NULL as fachbereich_kurzbz,NULL as lehrfach,NULL as lehrfach_bez,NULL as farbe,NULL as lehrform, NULL as anmerkung_lehreinheit
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FROM
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(
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SELECT
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NULL as unr,datum, stunde,
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CASE
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WHEN gruppe_kurzbz IS NOT NULL THEN gruppe_kurzbz
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ELSE CONCAT(UPPER(studg.typ),UPPER(res.stg_kurzbz),'-',COALESCE(CAST(res.semester AS varchar),'/'),COALESCE(CAST(res.verband AS varchar),'/'))
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END as gruppe,
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CASE
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WHEN mit.kurzbz IS NOT NULL THEN mit.kurzbz
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ELSE uid
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END as lektor,
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res.ort_kurzbz,res.studiengang_kz, res.titel, res.beschreibung,NULL as lehreinheit_id,NULL as lehrfach_id,NULL as anmerkung, NULL as fix,NULL as lehrveranstaltung_id,NULL as stg_kurzbzlang,NULL as stg_bezeichnung,NULL as stg_typ, NULL as fachbereich_kurzbz,NULL as lehrfach,NULL as lehrfach_bez,NULL as farbe,NULL as lehrform, NULL as anmerkung_lehreinheit
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FROM lehre.vw_reservierung res
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LEFT JOIN public.tbl_mitarbeiter mit ON mit.mitarbeiter_uid=uid
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JOIN public.tbl_studiengang studg ON studg.studiengang_kz=res.studiengang_kz
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WHERE
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res.ort_kurzbz = ?
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AND res.datum >= ?
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AND res.datum <= ?
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) as res
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GROUP BY res.ort_kurzbz,res.studiengang_kz, res.datum, res.stunde, res.titel, res.beschreibung
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UNION ALL
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SELECT
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'stundenplan' as type,
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unr,datum, stunde,
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CONCAT(lehrfach,'-',lehrform) as topic,
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'' as beschreibung,
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string_agg(DISTINCT gruppe, '/') as gruppe,
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string_agg(DISTINCT lektor, '/') as lektor,
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ort_kurzbz, studiengang_kz, titel,'' as beschreibung,lehreinheit_id,lehrfach_id,anmerkung,fix,lehrveranstaltung_id,stg_kurzbzlang,stg_bezeichnung,stg_typ,fachbereich_kurzbz,lehrfach,lehrfach_bez,farbe,lehrform,anmerkung_lehreinheit
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FROM
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(
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SELECT
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unr,datum, stunde,
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CASE
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WHEN gruppe_kurzbz IS NOT NULL THEN gruppe_kurzbz
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ELSE CONCAT(UPPER(sp.stg_typ),UPPER(sp.stg_kurzbz),'-',COALESCE(CAST(sp.semester AS varchar),'/'),COALESCE(CAST(sp.verband AS varchar),'/'))
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END as gruppe,
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CASE
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WHEN sp.mitarbeiter_kurzbz IS NOT NULL THEN sp.mitarbeiter_kurzbz
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ELSE lektor
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END as lektor,
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ort_kurzbz, studiengang_kz, titel,'' as beschreibung,lehreinheit_id,lehrfach_id,anmerkung,fix,lehrveranstaltung_id,stg_kurzbzlang,stg_bezeichnung,stg_typ,fachbereich_kurzbz,lehrfach,lehrfach_bez,farbe,lehrform,anmerkung_lehreinheit
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FROM lehre.vw_stundenplan sp
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WHERE ort_kurzbz = ?
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AND datum >= ?
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AND datum <= ?
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) as sp
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GROUP BY
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ort_kurzbz,unr, datum, stunde, lehreinheit_id, lehrfach_id,studiengang_kz,titel,anmerkung,fix,lehrveranstaltung_id,stg_kurzbzlang,stg_bezeichnung,stg_typ,fachbereich_kurzbz,lehrfach,lehrfach_bez,farbe,lehrform,anmerkung_lehreinheit
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ORDER BY datum, stunde
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", [$ort_kurzbz, $start_date, $end_date, $ort_kurzbz, $start_date, $end_date]);
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return $gruppierteEvents;
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}
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/**
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* function that takes a query that fetches lehre.vw_stundenplan rows and groups them so that they can be displayed in a calendar
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* @param string $stundenplanViewQuery the subquery used to group the result
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*
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* @return stdClass
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*/
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public function stundenplanGruppierung($stundenplanViewQuery)
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{
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$query_result = $this->execReadOnlyQuery("
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SELECT
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'lehreinheit' as type, beginn, ende, datum,
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CONCAT(lehrfach,'-',lehrform) as topic,
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array_agg(DISTINCT lektor) as lektor,
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array_agg(DISTINCT (gruppe,verband,semester,studiengang_kz,gruppen_kuerzel)) as gruppe,
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string_agg(DISTINCT ort_kurzbz, '/') as ort_kurzbz,
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array_agg(DISTINCT lehreinheit_id) as lehreinheit_id,
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titel, lehrfach, lehrform, lehrfach_bez, organisationseinheit, farbe, lehrveranstaltung_id
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FROM
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(
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SELECT unr,datum,beginn, ende,
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CASE
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WHEN sp.mitarbeiter_kurzbz IS NOT NULL THEN sp.mitarbeiter_kurzbz
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ELSE lektor
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END as lektor,
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CASE
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WHEN gruppe_kurzbz IS NOT NULL THEN gruppe_kurzbz
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ELSE CONCAT(UPPER(sp.stg_typ),UPPER(sp.stg_kurzbz),'-',COALESCE(CAST(sp.semester AS varchar),'/'),COALESCE(CAST(sp.verband AS varchar),'/'))
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END as gruppen_kuerzel,
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(SELECT bezeichnung
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FROM public.tbl_organisationseinheit
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WHERE oe_kurzbz IN(
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SELECT oe_kurzbz
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FROM lehre.tbl_lehrveranstaltung
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WHERE lehrveranstaltung_id = sp.lehrveranstaltung_id
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)) as organisationseinheit,
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ort_kurzbz, studiengang_kz, titel,lehreinheit_id,lehrfach_id,anmerkung,fix,lehrveranstaltung_id,stg_kurzbzlang,stg_bezeichnung,stg_typ,fachbereich_kurzbz,lehrfach,lehrfach_bez,farbe,lehrform,anmerkung_lehreinheit,gruppe, verband, semester,stg_kurzbz
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FROM (".$stundenplanViewQuery.") sp
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JOIN lehre.tbl_stunde ON lehre.tbl_stunde.stunde = sp.stunde
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) as subquery
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GROUP BY unr, datum, beginn, ende, ort_kurzbz, titel, lehrform, lehrfach, lehrfach_bez, organisationseinheit, farbe, lehrveranstaltung_id
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ORDER BY datum, beginn
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");
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return $query_result;
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}
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/**
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* NO STANDALONE FUNCTION - Generates a SQL query string to fetch 'stundenplan' events for a specific student within the current semester.
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* @param string $uid the user id that is used to fetch the stundenplan rows from the lehre.vw_stundenplan table
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*
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* @return string
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*/
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public function getStundenplanQuery($start_date, $end_date,$semester,$gruppen,$studentlehrverbaende){
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// helper function to check if either $gruppen or $studentlehrverbaende are empty for each semester
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$emptyCheck = function($toBeCheckedArray) use ($semester){
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$result = true;
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$sem = array_keys($semester);
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foreach($sem as $s){
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if(count($toBeCheckedArray[$s]) > 0){
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$result = false;
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break;
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}
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}
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return $result;
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};
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$query =
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"select sp.*
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from lehre.vw_stundenplan sp
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WHERE
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sp.datum >= ".$this->escape($start_date)."
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AND sp.datum <= ".$this->escape($end_date);
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// adds the AND sql chain only if both $gruppen and $studentlehrverbaende are not empty
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if(!$emptyCheck($gruppen) || !$emptyCheck($studentlehrverbaende))
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{
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$query .= " AND ( ";
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}
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foreach($semester as $sem => $semester_date_range)
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{
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foreach($semester_date_range as $sem_date => $sem_date_range)
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{
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// if there are not groups for the semester skip the iteration step
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if(!array_key_exists($sem_date,$gruppen) || count($gruppen[$sem_date]) == 0)
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{
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continue;
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}
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// converts the array of gruppen strings into a sql IN (_,_,_) chain
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$query .="(sp.gruppe_kurzbz IN (" .implode(',',$gruppen[$sem_date]).") AND sp.datum BETWEEN ".$this->escape($sem_date_range->start)." AND ".$this->escape($sem_date_range->ende)." )";
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// adds the OR sql chain only if the $studentlehrverbaende array is not empty
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// DOES not include the sql OR if the $studentlehrverbaende are empty and it is the last gruppen element in the iteration
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if(key($semester) != $sem || !$emptyCheck($studentlehrverbaende))
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{
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$query .="OR";
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}
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}
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}
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foreach($semester as $sem=>$semester_date_range)
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{
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foreach($semester_date_range as $sem_date => $sem_date_range)
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{
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if(!array_key_exists($sem_date,$studentlehrverbaende) || count($studentlehrverbaende[$sem_date]) == 0)
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{
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continue;
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}
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foreach($studentlehrverbaende[$sem_date] as $key=>$lehrverband)
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{
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// adds the OR sql chain only if its not the first element in the first semester of the $studentlehrverbaende array
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if($sem != array_keys($semester)[0] || $key != array_keys($semester)[0])
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{
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$query .="OR";
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}
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$query .= "((sp.studiengang_kz = ".$this->escape($lehrverband->studiengang_kz)." AND sp.semester = ".$this->escape($lehrverband->semester)." AND sp.verband = ".$this->escape($lehrverband->verband)." AND sp.gruppe = ".$this->escape($lehrverband->gruppe)." AND sp.datum BETWEEN ".$this->escape($sem_date_range->start)." AND ".$this->escape($sem_date_range->ende).")";
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// Eintraege fuer den ganzen Verband
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$query .= "OR (sp.studiengang_kz = ".$this->escape($lehrverband->studiengang_kz)." AND sp.semester = ".$this->escape($lehrverband->semester)." AND sp.verband = ".$this->escape($lehrverband->verband)." AND (sp.gruppe is null OR sp.gruppe='') AND sp.datum BETWEEN ".$this->escape($sem_date_range->start)." AND ".$this->escape($sem_date_range->ende).")";
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// Eintraege fuer das ganze Semester
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$query .= "OR (sp.studiengang_kz = ".$this->escape($lehrverband->studiengang_kz)." AND sp.semester = ".$this->escape($lehrverband->semester)." AND (sp.verband is null OR sp.verband='') AND sp.datum BETWEEN ".$this->escape($sem_date_range->start)." AND ".$this->escape($sem_date_range->ende).") AND gruppe_kurzbz is null)";
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}
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}
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}
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// closes the AND sql chain only if it was opened previously
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if(!$emptyCheck($gruppen) || !$emptyCheck($studentlehrverbaende))
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{
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$query .= ")";
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}
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return $query;
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}
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/**
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* NO STANDALONE FUNCTION - Generates a SQL query string to fetch 'stundenplan' events for a specific room within a date range.
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* @param string $ort_kurzbz the ort from which we want to query the stundenplan events
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* @param string $start_date (inclusive) the minimum date that an event should have to be fetched
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* @param string $end_date (inclusive) the maximum date that an event should not extend to be fetched
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*
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* @return string
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*/
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public function getRoomQuery($ort_kurzbz, $start_date, $end_date)
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{
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return
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"select sp.*
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FROM lehre.vw_stundenplan sp
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WHERE ort_kurzbz = ".$this->escape($ort_kurzbz)."
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AND datum >= ".$this->escape($start_date)."
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AND datum <= ".$this->escape($end_date);
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}
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/**
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* @param string $uid
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*
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* @return stdClass
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*/
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public function loadForUid($uid)
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{
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$this->addSelect(['sp.*','le.studiensemester_kurzbz']);
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$this->db->join('public.tbl_benutzergruppe bg', 'sp.gruppe_kurzbz=bg.gruppe_kurzbz AND bg.uid=?', 'LEFT', false);
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$this->addJoin('public.tbl_studiensemester ss1', 'bg.studiensemester_kurzbz=ss1.studiensemester_kurzbz AND ss1.start<=sp.datum AND ss1.ende>=sp.datum', 'LEFT');
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$this->db->join('public.tbl_studentlehrverband slv', "sp.studiengang_kz=slv.studiengang_kz AND slv.student_uid=? AND (slv.semester=sp.semester OR sp.semester IS NULL) AND (slv.verband=sp.verband OR sp.verband IS NULL OR sp.verband='' OR sp.verband='0') AND (slv.gruppe=sp.gruppe OR sp.gruppe IS NULL OR sp.gruppe='' OR sp.gruppe='0') AND sp.gruppe_kurzbz IS NULL", 'LEFT', false);
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$this->addJoin('public.tbl_studiensemester ss2', 'slv.studiensemester_kurzbz=ss2.studiensemester_kurzbz AND ss2.start<=sp.datum AND ss2.ende>=sp.datum', 'LEFT');
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$this->db->join('lehre.tbl_lehreinheit le', 'le.lehreinheit_id=sp.lehreinheit_id', 'LEFT');
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$this->db->or_where('ss1.studiensemester_kurzbz IS NOT NULL', null, false);
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$this->db->or_where('ss2.studiensemester_kurzbz IS NOT NULL', null, false);
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$query = $this->db->get_compiled_select('lehre.vw_stundenplan sp');
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return $this->execQuery($query, [$uid, $uid]);
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}
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}
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