silverstripe-subsites/code/SubsiteReportWrapper.php

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<?php
/**
* Creates a subsite-aware version of another report.
* Pass another report (or its classname) into the constructor.
*/
class SubsiteReportWrapper extends SSReportWrapper {
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///////////////////////////////////////////////////////////////////////////////////////////
// Filtering
function parameterFields() {
$subsites = Subsite::accessible_sites('CMS_ACCESS_CMSMain');
$options = $subsites->toDropdownMap('ID', 'Title');
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$subsiteField = new TreeMultiselectField('Subsites', 'Sites', $options);
$subsiteField->setValue(array_keys($options));
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// We don't need to make the field editable if only one subsite is available
if(sizeof($options) <= 1) {
$subsiteField = $subsiteField->performReadonlyTransformation();
}
$fields = parent::parameterFields();
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if($fields) {
$fields->insertBefore($subsiteField, $fields->First()->Name());
} else {
$fields = new FieldSet($subsiteField);
}
return $fields;
}
///////////////////////////////////////////////////////////////////////////////////////////
// Columns
function columns() {
$columns = parent::columns();
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$columns['Subsite.Title'] = "Subsite";
return $columns;
}
///////////////////////////////////////////////////////////////////////////////////////////
// Querying
function beforeQuery($params) {
// The user has select a few specific sites
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if(!empty($params['Subsites'])) {
Subsite::$force_subsite = $params['Subsites'];
// Default: restrict to all accessible sites
} else {
$subsites = Subsite::accessible_sites('CMS_ACCESS_CMSMain');
$options = $subsites->toDropdownMap('ID', 'Title');
Subsite::$force_subsite = join(',', array_keys($options));
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}
}
function afterQuery() {
// Manually manage the subsite filtering
Subsite::$force_subsite = null;
}
}