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<?php
// $Id$
/**
* Base sort handler that has no options and performs a simple sort
*
* Definition items:
* - formula: The formula to use to sort on, such as with a random sort.
* The formula should be an array, with keys for database
* types, and 'default' for non-specified. 'default' is
* required, all others ('mysql', 'mysqli' and 'pgsql' are
* optional). It is recommended you use 'default' for mysql
* and create specific overrides for pgsql when the formulae
* differ.
*
* @ingroup views_sort_handlers
*/
class views_handler_sort_formula extends views_handler_sort {
/**
* Constructor to take the formula this sorts on.
*/
function construct() {
$this->formula = $this->definition['formula'];
if (is_array($this->formula) && !isset($this->formula['default'])) {
$this->error = t('views_handler_sort_formula missing default: @formula', array('@formula' => var_export($this->formula, TRUE)));
}
parent::construct();
}
/**
* Called to add the sort to a query.
*/
function query() {
if (is_array($this->formula)) {
global $db_type;
if (isset($this->formula[$db_type])) {
$formula = $this->formula[$db_type];
}
else {
$formula = $this->formula['default'];
}
}
else {
$formula = $this->formula;
}
$this->ensure_my_table();
// Add the field.
$this->query->add_orderby(NULL, $formula, $this->options['order'], $this->table_alias . '_' . $this->field);
}
}