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Add documentation for :dependent on associations. [robby@planetargon.com] Closes #4151


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approximations and shouldn't be used for critical calculations. [Koz].  Closes #4148.  References #4146


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Move methods from TestResponse into a module, so they can be shared with response objects in integration tests. (This allows standard functional test assertions to be used in integration tests, like assert_response and assert_template.)


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Integration test's url_for now runs in the context of the last request (if any) so after post /products/show/1 url_for :action => 'new' will yield /product/new


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Fix problem with unloaded ARStore sessions being loaded when they are garbage collected, causing problems if there were AR objects in the session.


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Re-added mixed-in helper methods for the JavascriptGenerator.  Moved JavascriptGenerators methods to a module that is mixed in after the helpers are added.  Also fixed that variables set in the enumeration methods like #collect are set correctly.  Documentation added for the enumeration methods [Rick Olson].

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Added Hash#to_xml and Array#to_xml that makes it much easier to produce XML from basic structures [DHH] Moved Jim Weirich's wonderful Builder from Action Pack to Active Support (it's simply too useful to be stuck in AP) [DHH]

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Added a backtrace to the evil WSOD (White Screen of Death).  Closes #4073. TODO: Clearer exceptions [Rick Olson]

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XmlSimple _should_ be the default since XmlNode is not compatible with regular parameters -- also known as Why Did My Etech Demo Not Work? [DHH]

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Allow set_fixture_class to take Classes instead of strings for a class in a module.  Raise FixtureClassNotFound if a fixture can't load.  [Rick Olson] closes #4095

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changed default of Array#to_sentence to use one, two and three notation ( skip_last_comma => true ) 

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Fix quoting of inheritance column for STI eager loading #4098 [Jonathan Viney <jonathan@bluewire.net.nz>]

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slight change to eager associations table aliasing: use class_reflection, like 'post_comments' or 'tree_children'

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Added tracking of database and framework versions in script/about #4088 [charles.gerungan@gmail.com/Rick Olson]

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ActionController::Base.param_parsers now accept symbols. currently supported are :xml_node, :xml_simple and :yaml


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  By default application/xml posts are handled by creating a XmlNode object with the same name as the root element of the submitted xml. M$

 ActionController::Base.param_parsers['application/atom+xml'] = Proc.new do |data|
    node = REXML::Document.new(post)
   { node.root.name => node.root }
 end

 XmlSimple and Yaml web services were retired, ActionController::Base.param_parsers carries an example which shows how to get this functio$
 request.[formatted_post?, xml_post?, yaml_post? and post_format] were all deprecated in favor of request.content_type [Tobias Luetke]

Closes #4081


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Fixed eager loading problems with single-table inheritance [Rick Olson] Added smarter table aliasing for eager associations for multiple self joins [Rick Olson] (closes #3580)

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