silverstripe-subsites/code/SiteConfigSubsites.php

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<?php
/**
* Extension for the SiteConfig object to add subsites support
*/
class SiteConfigSubsites extends DataObjectDecorator {
function extraStatics() {
return array(
'has_one' => array(
'Subsite' => 'Subsite', // The subsite that this page belongs to
)
);
}
/**
* Update any requests to limit the results to the current site
*/
function augmentSQL(SQLQuery &$query) {
if(Subsite::$disable_subsite_filter) return;
// If you're querying by ID, ignore the sub-site - this is a bit ugly...
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if (!$query->where || (!preg_match('/\.(\'|"|`|)ID(\'|"|`|)( ?)=/', $query->where[0]) && !preg_match('/\.?(\'|"|`|)SubsiteID(\'|"|`|)( ?)=/', $query->where[0]))) {
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if($context = DataObject::context_obj()) $subsiteID = (int)$context->SubsiteID;
else $subsiteID = (int)Subsite::currentSubsiteID();
$tableName = array_shift(array_keys($query->from));
if($tableName != 'SiteConfig') return;
$query->where[] = "\"$tableName\".\"SubsiteID\" IN ($subsiteID)";
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}
}
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function onBeforeWrite() {
if((!is_numeric($this->owner->ID) || !$this->owner->ID) && !$this->owner->SubsiteID) $this->owner->SubsiteID = Subsite::currentSubsiteID();
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}
/**
* Return a piece of text to keep DataObject cache keys appropriately specific
*/
function cacheKeyComponent() {
return 'subsite-'.Subsite::currentSubsiteID();
}
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}