What\'s the shorthand for inserting a new record or updating if it exists?
        Actually firstOrCreate would not update in case that the register already exists in the DB. I improved a bit Erik's solution as I actually needed to update a table that has unique values not only for the column "id"
/**
 * If the register exists in the table, it updates it. 
 * Otherwise it creates it
 * @param array $data Data to Insert/Update
 * @param array $keys Keys to check for in the table
 * @return Object
 */
static function createOrUpdate($data, $keys) {
    $record = self::where($keys)->first();
    if (is_null($record)) {
        return self::create($data);
    } else {
        return self::where($keys)->update($data);
    }
}
Then you'd use it like this:
Model::createOrUpdate(
        array(
    'id_a' => 1,
    'foo' => 'bar'
        ), array(
    'id_a' => 1
        )
);