ecto 0.14.0

on Hex

Experimental features (please try them out and give feedback)

• Add Ecto.Pools.SojournBroker as a more flexible and customizable alternative to Ecto.Pools.Poolboy
• Support for embeds_one and embeds_many

Enhancements

• Add Ecto.Adapters.SQL.to_sql/3
• Allow preloads to be customized with queries
• Store the connection PID in Ecto.LogEntry
• Support :on_delete when defining has_many and belongs_to in schema
• Allow renaming tables in migration
• Include Ecto's processing time along side adapter processing on Ecto.LogEntry.query_time
• Introduce Ecto.Repo.after_connect/1
• Support date_add/3 and datetime_add/3 for interval based datetime operations
• Support :push and :pull array operations in Ecto.Repo.update_all/3

Bug fixes

• Ensure uniqueness validatior runs the proper check when a scope changed but the value is still the same
• Fix a bug where it was not possible to add a references column in MySQL in an alter table
• Minimize query rewriting in has_many/one :through, ensuring a wilder variety of associations are supported
• Do not fail when compiling queries with empty order or group by expressions
• Ensure literals in queries are also cast/dump

Backwards incompatible changes

• Ecto.Repo.update!/2 no longer invokes callbacks if there were no changes, avoiding writing to the database at all (use :force to force callback execution)
• Ecto.Repo.transaction/2 is now flattened. This means that multiple transaction calls will no longer use savepoints, instead it will be considered as a single transaction, where a failure in any transaction block will trigger the outmost transaction to rollback, even if failures are rescued. This should only affect users that were explicitly relying on the savepoints.
• :date, :time and :datetime were removed in favor of Ecto.Date, Ecto.Time and Ecto.DateTime
• Ecto.Changeset.errors now return {"shuold be less than %{count}", count: 3} instead of {"shuold be less than %{count}", 3}
• Ecto.Adapters.SQL.query/4 now returns a list of lists instead of a list of tuples

Adapter backwards incompatible changes

• Pass {source, model} in Ecto.Adapter.insert/update/delete
• SQL adapters are not expected to return each row as a list instead of a tuple
• id_types/0 were removed in favor of load/2 and dump/2