/**
* Determines if the query should be previewed, and thus interrupted silently.
* If so, this function also displays the query via the debuging system.
* Subclasess should respect the results of this call for each query, and not
* execute any queries that generate a true response.
*
* @param string $sql The query to be executed
* @return boolean Flag indicating that the query was previewed
*/
protected function previewWrite($sql)
{
// Only preview if previewWrite is set, we are in dev mode, and
// the query is mutable
if (isset($_REQUEST['previewwrite']) && Director::isDev() && $this->connector->isQueryMutable($sql)) {
// output preview message
Debug::message("Will execute: {$sql}");
return true;
} else {
return false;
}
}
