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47 lines
1.6 KiB
47 lines
1.6 KiB
<?php
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// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
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//
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// All Rights Reserved. See copyright.txt for details and a complete list of authors.
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// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
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// $Id$
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class Tiki_Formula_Function_RelationPresent extends Math_Formula_Function
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{
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public function evaluate($element)
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{
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$default = 0;
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$allowed = ['qualifier', 'from', 'to'];
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if ($extra = $element->getExtraValues($allowed)) {
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$this->error(tr('Unexpected values: %0', implode(', ', $extra)));
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}
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$from = $element->from;
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$to = $element->to;
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$qualifier = $element->qualifier;
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if (! $qualifier || count($qualifier) != 1) {
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$this->error(tra('Qualifier must be provided and contain one argument: type'));
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}
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if (! $from || count($from) != 2) {
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$this->error(tra('From must be provided and contain two arguments: type, object-id'));
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}
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if (! $to || count($to) != 2) {
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$this->error(tra('To must be provided and contain two arguments: type, object-id'));
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}
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$qualifier = $this->evaluateChild($qualifier[0]);
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$typeFrom = $this->evaluateChild($from[0]);
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$objectFrom = $this->evaluateChild($from[1]);
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$typeTo = $this->evaluateChild($to[0]);
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$objectTo = $this->evaluateChild($to[1]);
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$lib = TikiLib::lib('relation');
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$id = $lib->get_relation_id($qualifier, $typeFrom, $objectFrom, $typeTo, $objectTo);
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return $id ? 1 : 0;
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}
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}
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