Multiple Connections ==================== Idiorm now works with multiple conections. Most of the static functions work with an optional connection name as an extra parameter. For the ``ORM::configure`` method, this means that when passing connection strings for a new connection, the second parameter, which is typically omitted, should be ``null``. In all cases, if a connection name is not provided, it defaults to ``ORM::DEFAULT_CONNECTION``. When chaining, once ``for_table()`` has been used in the chain, remaining calls in the chain use the correct connection. .. code-block:: php <?php // Default connection ORM::configure('sqlite:./example.db'); // A named connection, where 'remote' is an arbitrary key name ORM::configure('mysql:host=localhost;dbname=my_database', null, 'remote'); ORM::configure('username', 'database_user', 'remote'); ORM::configure('password', 'top_secret', 'remote'); // Using default connection $person = ORM::for_table('person')->find_one(5); // Using default connection, explicitly $person = ORM::for_table('person', ORM::DEFAULT_CONNECTION)->find_one(5); // Using named connection $person = ORM::for_table('different_person', 'remote')->find_one(5); Supported Methods ^^^^^^^^^^^^^^^^^ In each of these cases, the ``$connection_name`` parameter is optional, and is an arbitrary key identifying the named connection. * ``ORM::configure($key, $value, $connection_name)`` * ``ORM::for_table($table_name, $connection_name)`` * ``ORM::set_db($pdo, $connection_name)`` * ``ORM::get_db($connection_name)`` * ``ORM::raw_execute($query, $parameters, $connection_name)`` * ``ORM::get_last_query($connection_name)`` * ``ORM::get_query_log($connection_name)`` Of these methods, only ``ORM::get_last_query($connection_name)`` does *not* fallback to the default connection when no connection name is passed. Instead, passing no connection name (or ``null``) returns the most recent query on *any* connection. .. code-block:: php <?php // Using default connection, explicitly $person = ORM::for_table('person')->find_one(5); // Using named connection $person = ORM::for_table('different_person', 'remote')->find_one(5); // Last query on *any* connection ORM::get_last_query(); // returns query on 'different_person' using 'remote' // returns query on 'person' using default by passing in the connection name ORM::get_last_query(ORM::DEFAULT_CONNECTION); Notes ~~~~~ * **There is no support for joins across connections** * Multiple connections do not share configuration settings. This means if one connection has logging set to ``true`` and the other does not, only queries from the logged connection will be available via ``ORM::get_last_query()`` and ``ORM::get_query_log()``. * A new method has been added, ``ORM::get_connection_names()``, which returns an array of connection names. * Caching *should* work with multiple connections (remember to turn caching on for each connection), but the unit tests are not robust. Please report any errors.