Introduce the :readonly option to all associations. Records from the association cannot be saved. Closes #11084.


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Allow find on a has_many association defined with :finder_sql to accept id arguments as strings like regular find does. Closes #9916 [krishna]

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Ensure that associations with :dependent => :delete_all respect :conditions option.  Closes #8034 [danger, joshpeek, Rick]

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

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Fix bug introduced by changeset 3679 which caused custom attribute? methods to be overridden. Also ensure that ? methods are defined even if read method is customised. (closes #3677) [jonathan@bluewire.net.nz]

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Fixed that reflections would bleed across class boundaries in single-table inheritance setups (closes #3796) [lars@pind.com]

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Added option inheritance for find calls on has_and_belongs_to_many and has_many assosociations [DHH] Added option to specify :group, :limit, :offset, and :select options from find on has_and_belongs_to_many and has_many assosociations [DHH]
Added form_remote_for (form_for meets form_remote_tag) [DHH]

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 Ticket #1874 - Firebird adapter
 r3107@asus:  jeremy | 2005-11-16 00:06:14 -0800
 quote column aliases
 r3108@asus:  jeremy | 2005-11-16 00:08:12 -0800
 quote columns in construct_conditions_from_arguments.  update sequence_name docs.  introduce prefetched primary keys.
 r3109@asus:  jeremy | 2005-11-16 00:09:08 -0800
 double-quote rather than single-quote sqlite columns
 r3110@asus:  jeremy | 2005-11-16 00:09:56 -0800
 quote column names and use attribute_condition in validates_uniqueness_of
 r3111@asus:  jeremy | 2005-11-16 00:12:24 -0800
 Use QUOTED_TYPE constant in tests
 r3112@asus:  jeremy | 2005-11-16 00:13:28 -0800
 restrict test_inserts_with_pre_and_suffix to those adapters which support migrations
 r3113@asus:  jeremy | 2005-11-16 00:14:09 -0800
 Use QUOTED_TYPE constant in tests
 r3114@asus:  jeremy | 2005-11-16 00:14:30 -0800
 Use QUOTED_TYPE constant in tests


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 Ticket 2221 - model.association.clear should destroy associated objects if :dependent => true instead of nullifying their foreign keys


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Made Oracle a first-class connection adapter by adhering closer to idiomatic Oracle style #1798 [The Gang of Oracles]

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Eager loading of dependent has_one associations won't delete the association #1212. Also, starting to refactor the tests to make them speedier, with optional support for transactional fixtures.


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Fixed counter_sql when no records exist in database for PostgreSQL (would give error, not 0) #1039 [Caleb Tennis]

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Fixed that HasManyAssociation#count was using :finder_sql rather than :counter_sql if it was available #445 [Scott Barron]

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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 replace to associations, so you can do project.manager.replace(new_manager) or project.milestones.replace(new_milestones) #402 [Tim Bates]
Added build and create methods to has_one and belongs_to associations, so you can now do project.manager.build(attributes) #402 [Tim Bates]
Fixed that Base#== wouldn't work for multiple references to the same unsaved object #402 [Tim Bates]
Added that if a before_* callback returns false, all the later callbacks and the associated action are cancelled. If an after_* callback returns false, all the later callbacks are cancelled. Callbacks are generally run in the order they are defined, with the exception of callbacks defined as methods on the model, which are called last. #402 [Tim Bates]

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