Chapters
ActiveRecord
New bind-style variable interpolation
New macro style class methods for AR model validation
Automatic requiring of dependencies
The Acts namespace
Fixtures
New YAML fixture format
New Location and Extension for fixtures
CSV format for fixtures
Fixture Availability
ActionPack
Trim out newlines in ERB templates
New interface to cookies
Define method_missing for controllers
Controllers automatically require their own helpers
New dependency model on controllers
render_partials has a default counter now too
New require_dependency method
Helpers
XHTML compliance
link_to_image helper
Functional Testing
More HTTP methods
Additional Assertions
More Convenient Session Support
Railties
New Environment
RAILS_ENV system
Breakpoints
Setting Default Session Options
Options
exports
recent changes
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