Migration

v5.x to v6.0

Added interface ModelProvider. ModelCollection implements it. Better use this one than depend on ModelCollection.
Added SchemaBuilder to build schema using a fluent API.
Added through option for has_may relationship.
Added a config builder.
The static methods ActiveRecord::query() and where() can be used to create a query directly from an ActiveRecord.

The ActiveRecord class is now abstract and require extension.
The Query class is now defined by the Model instead of provided by ModelDefinition. The query_class directive has been removed.
Model parents are now resolved using PHP inheritance on ActiveRecord classes. The extends directive has been removed.
Models are now identified by their ActiveRecord, the id property has been removed.
Table requires a Connection instance in its constructor, the CONNECTION attribute is no longer replaced by a Connection instance.
Replaced attributes arrays to initialize tables and models with objects.
ConnectionCollection and ModelCollection no longer implement ArrayAccess, and are read only. Use the connection_for_id() method to obtain a connection. Use the model_for_record() method to obtain a model.
Removed Model::join().
Removed support for implements in Table.
Removed get_model()
Removed the notion of scopes on Model, they are better replaced with Query extensions.
Removed forwarded query methods on the model. Still query() and where() remain available.
The Model class no longer implements ArrayAccess.

None

ActiveRecord uses StaticModelProvider to obtain its model.
For models extending other models, the primary key is now inherited during config building instead of resolved during Table constructor.