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Removes the ability for eager loaded conditions to be interpolated, since there is no model instance to use as a context for interpolation. #5553 [turnip@turnipspatch.com]

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Association collections have an _ids reader method to match the existing writer for collection_select convenience (e.g. employee.task_ids). The writer method skips blank ids so you can safely do @employee.task_ids = params[:tasks] without checking every time for an empty list or blank values.  References #1887, Closes #5780.

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Deprecation: count class method should be called with an options hash rather than two args for conditions and joins. Closes #6287.

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Deprecation tests. Remove warnings for dynamic finders and for the foo_count ethod if it's also an attribute.

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Backed out of new_record? to new? transformation as it would screw up existing models that did boolean calls on "new" attributes [DHH]

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Deprecated ActiveRecord::Base.new_record? in favor of ActiveRecord::Base.new? (old version still works until Rails 2.0) [DHH]

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Deprecation: use :dependent => :delete_all rather than :exclusively_dependent => true. Closes #6024.

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has_one supports the :dependent => :delete option which skips the typical callback chain and deletes the associated object directly from the database. Closes #5927.

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Fixed a bug which would cause .save to fail after trying to access a empty has_one association on a unsaved record.

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Cache nil results for has_one associations so multiple calls don't call the database.  Closes #5757. [Michael A. Schoen]

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Oracle: use nonblocking queries if allow_concurrency is set, fix pessimistic locking, don't guess date vs. time by default (set OracleAdapter.emulate_dates = true for the old behavior), adapter cleanup. Closes #5635.

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Fixed that has_many.create ended up with duplicate objects (closes #5250) [daniel@nouvelles-solutions.com]

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Fix the has_and_belongs_to_many #create doesn't populate the join for new records.  Closes #3692 [josh@hasmanythrough.com]

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Provide Association Extensions access to the instance that the association is being accessed from. Closes #4433 [josh@hasmanythrough.com]


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Fix the HasManyAssociation#count method so it uses the new ActiveRecord::Base#count syntax, while maintaining backwards compatibility.  [Rick]

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Fixed that AssociationCollection#delete_all should work even if the records of the association are not loaded yet. [Florian Weber]


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Fixed that records returned from has_and_belongs_to_many associations with additional attributes should be marked as read only (fixes #4512) [DHH] DEPRECATED: Using additional attributes on has_and_belongs_to_many associations. Instead upgrade your association to be a real join model [DHH]

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Rework table aliasing to account for truncated table aliases.  Add smarter table aliasing when doing eager loading of STI associations. This allows you to use the association name in the order/where clause. [Jonathan Viney / Rick Olson] closes #4108

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Alias the has_and_belongs_to_many join table on eager includes. closes #4106 [jeremyevans0@gmail.com]

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fix test_find_in_association_with_options test, tweak other tests affected by developer/project addition

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Fixed that calling HasOneProxy#build_model repeatedly would cause saving to happen (closes #4058) [anna@wota.jp]

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