function handle(&$params)
{
if (!@$_POST['history__id']) {
return PEAR::raiseError("No history id specified", DATAFACE_E_ERROR);
}
$historyid = $_POST['history__id'];
if (!preg_match('/\\d+/', $historyid)) {
return PEAR::raiseError("Invalid history id provided.", DATAFACE_E_ERROR);
}
$app =& Dataface_Application::getInstance();
$record =& $app->getRecord();
if (!$record) {
return PEAR::raiseError("No record was specified", DATAFACE_E_ERROR);
}
import("Dataface/HistoryTool.php");
$ht = new Dataface_HistoryTool();
$hrecord = $ht->getRecordById($record->_table->tablename, $historyid);
// make sure that this history record matches the current record.
$keys = array_keys($record->_table->keys());
if ($record->strvals($keys) != $hrecord->strvals($keys)) {
return PEAR::raiseError("Attempt to restore record history from unmatching history record.", DATAFACE_E_ERROR);
}
// Now that we are convinced that we have the correct record, we can restore it.
if (@$_POST['-fieldname']) {
$fieldname = $_POST['-fieldname'];
} else {
$fieldname = null;
}
$res = $ht->restore($record, $historyid, $fieldname, true);
if (PEAR::isError($res)) {
return $res;
}
$url = false;
//$app->getPreviousUrl(true);
if (@$_POST['-locationid']) {
$url = DATAFACE_SITE_HREF . '?' . $app->decodeLocation($_POST['-locationid']);
}
if (!$url) {
// If the url is not specified we will just create a url to return
// to the specified record's history listing.
$url = $record->getURL('-action=history');
}
if ($fieldname) {
$msg = "Field '{$fieldname}' successfully restored to its value from '" . $hrecord->strval('history__modified') . "'.";
} else {
$msg = "Record successfully restored to its value from '" . $hrecord->strval('history__modified') . "'.";
}
$url .= "&--msg=" . urlencode($msg);
header('Location: ' . $url);
exit;
}
function test_restore()
{
$app =& Dataface_Application::getInstance();
$record = df_get_record('HistoryToolTest', array('name' => 'Johnny'));
$this->assertEquals('john.gif', $record->val('container_field'));
$record->setValue('container_field', 'john2.gif');
$record->save();
$ht = new Dataface_HistoryTool();
$hid = $ht->logRecord($record);
$history1 = $ht->getRecordById('HistoryToolTest', $hid);
$this->assertEquals(array('name' => 'Johnny', 'container_field' => 'john2.gif'), $history1->strvals(array('name', 'container_field')));
$record->setValue('container_field', 'john3.gif');
$record->save();
$hid2 = $ht->logRecord($record);
$history2 = $ht->getRecordById('HistoryToolTest', $hid2);
$this->assertEquals(array('name' => 'Johnny', 'container_field' => 'john3.gif'), $history2->strvals(array('name', 'container_field')));
$record2 = df_get_record('HistoryToolTest', array('name' => 'Johnny'));
$this->assertEquals($record2->strvals(array('name', 'container_field')), $history2->strvals(array('name', 'container_field')));
$ht->restore($record, $hid);
$record3 = df_get_record('HistoryToolTest', array('name' => 'Johnny'));
$this->assertEquals(array('name' => 'Johnny', 'container_field' => 'john2.gif'), $record3->strvals(array('name', 'container_field')));
}
