Fixed dependency reloading by switching to a remove_const approach where all Active Records, Active Record Observers, and Action Controllers are reloading by undefining their classes. This enables you to remove methods in all three types and see the change reflected immediately and it fixes #539. This also means that only those three types of classes will benefit from the const_missing and reloading approach. If you want other classes (like some in lib/) to reload, you must use require_dependency to do it.

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Added methods for removing subclasses -- couldnt make it work with the regular nested-module approach (ObjectSpace was being difficult), so this is a straight inclusion

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Added the option of supplying an array of ids and attributes to Base#update, so that multiple records can be updated at once (inspired by #526/Duane Johnson). Added the option of supplying an array of attributes to Base#create, so that multiple records can be created at once. Added that Base#delete and Base#destroy both can take an array of ids to delete/destroy #336. Added that has_many association build and create methods can take arrays of record data like Base#create and Base#build to build/create multiple records at once.

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Added @request.raw_post as a convenience access to @request.env['RAW_POST_DATA'] and fixed the patch problems with the session #534 [Tobias Luetke]

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The create and build methods are only available for has_one/belongs_to if an association already exist. It will not work when it's nil. Updated the documentation to reflect that.

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Added Base.update_collection that can update an array of id/attribute pairs, such as the ones produced by the recent added support for automatic id-based indexing for lists of items #526 [Duane Johnson]

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Added :application_prefix to url_for and friends that makes it easier to setup Rails in non-vhost environments #516 [Jamis Buck]

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Added :encode option to mail_to that'll allow you to masquarede the email address behind javascript or hex encoding #494 [Lucas Carlson]

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Added Florian Gross' latest version of Breakpointer and friends that fixes a variaty of bugs #441 [Florian Gross]

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Added ActiveRecord::Base.timestamps_gmt that can be set to true to make the automated timestamping use GMT instead of local time #520 [Scott Baron]

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Added that update_all calls sanitize_sql on its updates argument, so stuff like MyRecord.update_all(['time = ?', Time.now]) works #519 [notahat]

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Fixed that the dynamic finders didnt treat nil as a "IS NULL" but rather "= NULL" case #515 [Demetrius]

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Fixed that script/breakpointer didn't get the Ruby path rewritten as the other scripts #523 [brandt@kurowski.net]

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Added that has_and_belongs_to_many associations with additional attributes also can be created between unsaved objects and only committed to the database when Base#save is called on the associator #524 [Eric Anderson]

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Fixed that records fetched with piggy-back attributes or through rich has_and_belongs_to_many associations couldn't be saved due to the extra attributes not part of the table #522 [Eric Anderson]

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Fixed handling of syntax errors in models that had already been succesfully required once in the current interpreter. Fixed superclass mismatch and other controller related problems by not using dependency reloading for controllers.

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Added mass-assignment protection for the inheritance column -- regardless of a custom column is used or not

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Fixed that association proxies would fail === tests like PremiumSubscription === @account.subscription

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Fixed that the content-header was being set to application/octet_stream instead of application/octet-stream on send_date/file [Alexey]

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