31 Oct '14, 4pm

Current status: The default log level in the production environment is now :debug. (-‸ლ)

Rails will now automatically include the template's digest in ETags. (Pull Request ) render nothing: true or rendering a nil body no longer add a single space padding to the response body. (Pull Request ) Introduced the always_permitted_parameters option to configure which parameters are permitted globally. The default value of this configuration is ['controller', 'action'] . (Pull Request ) The *_filter family methods have been removed from the documentation. Their usage is discouraged in favor of the *_action family methods: after_filter => after_action append_after_filter => append_after_action append_around_filter => append_around_action append_before_filter => append_before_action around_filter => around_action before_filter => before_action prepend_after_filter => prepend_after_action prepend_around_filter => prepend_around_action prepend_before_filter => prepend_bef...

Full article: http://edgeguides.rubyonrails.org/4_2_release_notes.html

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