/**
* Determines what action should be performed and takes that action.
*
* @uses MpmRunController::displayHelp()
* @uses MpmCommandLineWriter::getInstance()
* @uses MpmCommandLineWriter::addText()
* @uses MpmCommandLineWriter::write()
* @uses MpmCommandLineWriter::writeHeader()
* @uses MpmCommandLineWriter::writeFooter()
* @uses MpmMigrationHelper::doesMigrationExist()
* @uses MpmMigrationHelper::getMigrationObject()
* @uses MpmMigrationHelper::runMigration()
*
* @return void
*/
public function doAction()
{
// make sure system is init'ed
MpmDbHelper::test();
if (count($this->arguments) != 2) {
$obj = MpmCommandLineWriter::getInstance();
$obj->addText('ERROR: You must provide two arguments with this command.');
$obj->addText(' ');
$this->displayHelp();
return;
}
// are we running the up or the down?
$type = strtolower($this->arguments[0]);
// what number do we want to run?
$num = $this->arguments[1];
if (!is_numeric($num)) {
$obj = MpmCommandLineWriter::getInstance();
$obj->addText('ERROR: Migration number must be numeric.');
$obj->addText(' ');
$this->displayHelp();
return;
}
if ($type != 'up' && $type != 'down') {
$obj = MpmCommandLineWriter::getInstance();
$obj->addText('ERROR: Method must be either up or down.');
$obj->addText(' ');
$this->displayHelp();
return;
}
// does this migration number exist?
if (!MpmMigrationHelper::doesMigrationExist($num)) {
$obj = MpmCommandLineWriter::getInstance();
$obj->addText('ERROR: Migration ' . $num . ' does not exist.');
$obj->write();
return;
}
$row = MpmMigrationHelper::getMigrationObject($num);
$obj = MpmCommandLineWriter::getInstance();
$obj->writeHeader();
MpmMigrationHelper::runMigration($row, $type);
echo "\n";
$obj->writeFooter();
}
