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Added dynamic attribute-based finders as a cleaner way of getting objects by simple queries without turning to SQL.

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Added that Base#find takes an optional options hash, including :conditions. Base#find_on_conditions deprecated in favor of #find with :conditions #407 [bitsweat]

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Added a db2 adapter that only depends on the Ruby/DB2 bindings (http://raa.ruby-lang.org/project/ruby-db2/) #386 [Maik Schmidt]. Converted all the fixtures to YAML style ones.

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Added the final touches to the Microsoft SQL Server adapter by DeLynn Berry that makes it suitable for actual use #394 [DeLynn Barry]

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Fixed a bug in the Ruby/MySQL that caused binary content to be escaped badly and come back mangled #405 [Tobias Luetke]

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Added :counter_cache option to acts_as_tree that works just like the one you can define on belongs_to #371 [Josh]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@291 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Fixed quoting in validates_format_of that would allow some rules to pass regardless of input #390 [Dmitry V. Sabanin]

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Transactions are now actually working on the database level on save, but thread safety is currently out the window. Andreas is working on it

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Added Base.default_timezone accessor that determines whether to use Time.local (using :local) or Time.utc (using :utc) when pulling dates and times from the database. This is set to :local by default.

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Fixed that the const_missing autoload assumes the requested constant is set by require_association and calls const_get to retrieve it. If require_association did not set the constant then const_get will call const_missing, resulting in an infinite loop #380 [bitsweat]

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Added the possibility for adapters to overwrite add_limit! to implement a different limiting scheme than "LIMIT X" used by MySQL, PostgreSQL, and SQLite.

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Added allow_nil options to validates_inclusion_of so that validation is only triggered if the attribute is not nil [what-a-day]

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Added work-around for PostgreSQL and the problem of getting fixtures to be created from id 1 on each test case. This only works for auto-incrementing primary keys called "id" for now #359 [Scott Baron]

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Fixed that options[:counter_sql] was overwritten with interpolated sql rather than original sql #355 [bitsweat]

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Fixed that overriding an attribute's accessor would be disregarded by add_on_empty and add_on_boundary_breaking because they simply used the attributes[] hash instead of checking for @base.respond_to?(attr.to_s). [Marten]

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Fixed that Base.table_name would expect a parameter when used in has_and_belongs_to_many joins [Anna Lissa Cruz]

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Fixed that nested transactions now work by letting the outer most transaction have the responsibilty of starting and rolling back the transaction. If any of the inner transactions swallow the exception raised, though, the transaction will not be rolled back. So always let the transaction bubble up even when you've dealt with local issues. Closes #231 and #340.

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Fixed validates_{confirmation,acceptance}_of to only happen when the virtual attributes are not nil #348 [dpiddy@gmail.com]

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Switched strategy on the id_before_type_cast problem and just did an explicit method so postgresql wouldnt choke on id is null

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Added a require_association hook on const_missing that makes it possible to use any model class without requiring it first. Added that Active Record associations are now reloaded instead of cleared to work with the new const_missing hook in Active Record.

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