+ function rate($cur, $when)
+ {
+ $when === false ? date('Y-m-d H:i:s') : $when;
+ $this->loadRates(); // check if we have an rates.
+
+ $r = DB_DataObject::factory('core_curr_rate');
+ $r->curr = $cur;
+ $r->whereAdd("from_dt < '" . date('Y-m-d H:i:s', strtotime($when)) . "'");
+
+ $r->orderBy('to_dt ASC');
+ $r->limit(1);
+ if ($r->find(true)) {
+ return $r->rate;
+ }
+ return false;
+ }
+
+ function convert($val, $from, $to, $when = false)
+ {
+
+
+ $fr = $this->rate($from, $when);
+ $tr = $this->rate($to, $when);
+
+ // crappy error handling..
+ if ($fr === false) {
+ return false;
+ }
+ if ($tr === false) {
+ return false;
+ }
+
+ return ((1.0 / $fr) * $val) * $tr;
+
+
+
+ }
+
+ function currentRates()
+ {
+ $this->loadRates();
+ // DB_DataObject::debugLevel(1);
+ $c = DB_DAtaObject::factory('core_curr_rate');
+ $c->whereAdd('from_dt < NOW() AND to_dt > NOW()');
+ $c->find();
+ $ret = array();
+ while($c->fetch()) {
+ $ret[$c->curr] = $c->rate;
+ }
+ return $ret;
+
+
+
+ }
+
+