I’m pleased to announce that Sequel version 1.0 has just been
released. Sequel is a lightweight database access and ORM library for
Ruby. Sequel provides thread safety, connection pooling and a simple
and expressive API for constructing database queries and table
schemas.
This milestone release separates Sequel into two separate libraries:
sequel_core and sequel_model. Also new in this release are refactored
model hooks (callbacks), a few minor bug fixes, and 100% code
coverage! To update your sequel gem execute the following command:
sudo gem update sequel
Following is a discussion of the main changes:
=== New code organization
Sequel is now divided into two parts: sequel_core and sequel_model.
These two parts are distributed as two separate gems. The sequel gem
bundles sequel_core and sequel_model together. If you don’t use
Sequel::Model in your code, you can just install and use sequel_core.
=== New model hooks implementation
The hooks implementation have been rewritten from scratch, is much
more robust and offers a few new features:
-
More ways to define hooks: hooks can now be defined by supplying a
block or a method name, or by overriding the hook instance method. -
Inheritable hooks: Hooks can now be inherited, which means that you
can define general hooks in a model superclass, and use them in
subclasses. You can also define global hooks on Sequel::Model that
will be invoked for all model classes. -
Hook chains can be broken by returning false from within the hook.
-
New after_initialize hook, invoked after instance initialization.
-
The hook invocation order can no longer be changed. Hooks are
invoked in order of definition, from the top of the class hierarchy
(that is, from Sequel::Model) down to the specific class.
=== Miscellanea
-
Removed deprecated adapter stubs, and all other deprecations in both
sequel_core and sequel_model. -
Fixed String#to_time to raise error correctly for invalid time
stamps. -
Fixed error behavior when parse_tree or ruby2ruby are not available.
=== More info on Sequel
Sequel project page:
http://code.google.com/p/ruby-sequel
Sequel documentation:
http://sequel.rubyforge.org
Join the Sequel-talk group:
http://groups.google.com/group/sequel-talk
Join Sequel discussion on IRC at #sequel.
Install the gem:
sudo gem install sequel
Or check out the source and install manually:
svn co http://ruby-sequel.googlecode.com/svn/trunk sequel
cd sequel
rake install
