== master == 0.6.1 / 2009-03-07 * Add i18n support for ActiveRecord validation errors * Add a validation error when failing to transition for ActiveRecord / DataMapper / Sequel integrations == 0.6.0 / 2009-03-03 * Allow multiple conditions for callbacks / class behaviors * Add support for state-driven class behavior with :if/:unless options * Alias Machine#event as Machine#on * Fix nil from/to states not being handled properly * Simplify hooking callbacks into loopbacks * Add simplified transition/callback requirement syntax == 0.5.2 / 2009-02-17 * Improve pretty-print of events * Simplify state/event matching design, improving guard performance by 30% * Add better error notification when conflicting guard options are defined * Fix scope name pluralization not being applied correctly == 0.5.1 / 2009-02-11 * Allow states to be drawn as ellipses to accommodate long names * Fix rake tasks not being registered in Rails/Merb applications * Never automatically define machine attribute accessors when using an integration == 0.5.0 / 2009-01-11 * Add to_name and from_name to transition objects * Add nicely formatted #inspect for transitions * Fix ActiveRecord integrations failing when the database doesn't exist yet * Fix states not being drawn in GraphViz graphs in the correct order * Add nicely formatted #inspect for states and events * Simplify machine context-switching * Store events/states in enumerable node collections * No longer allow subclasses to change the integration * Move fire! action logic into the Event class (no longer calls fire action on the object) * Allow states in subclasses to have different values * Recommend that all states be referenced as symbols instead of strings * All states must now be named (and can be associated with other value types) * Add support for customizing the actual stored value for a state * Add compatibility with Ruby 1.9+ == 0.4.3 / 2008-12-28 * Allow dm-observer integration to be optional * Fix non-lambda callbacks not working for DataMapper/Sequel == 0.4.2 / 2008-12-28 * Fix graphs not being drawn the same way consistently * Add support for sharing transitions across multiple events * Add support for state-driven behavior * Simplify initialize hooks, requiring super to be called instead * Add :namespace option for generated state predicates / event methods == 0.4.1 / 2008-12-16 * Fix nil states not being handled properly in guards, known states, or visualizations * Fix the same node being used for different dynamic states in GraphViz output * Always include initial state in the list of known states even if it's dynamic * Use consistent naming scheme for dynamic states in GraphViz output * Allow blocks to be directly passed into machine class * Fix attribute predicates not working on attributes that represent columns in ActiveRecord == 0.4.0 / 2008-12-14 * Remove the PluginAWeek namespace * Add generic attribute predicate (e.g. "#{attribute}?(state_name)") and state predicates (e.g. "#{state}?") * Add Sequel support * Fix aliasing :initialize on ActiveRecord models causing warnings when the environment is reloaded * Fix ActiveRecord state machines trying to query the database on unmigrated models * Fix initial states not getting set when the current value is an empty string [Aaron Gibralter] * Add rake tasks for generating graphviz files for state machines [Nate Murray] * Fix initial state not being included in list of known states * Add other_states directive for defining additional states not referenced in transitions or callbacks [Pete Forde] * Add next_#{event}_transition for getting the next transition that would be performed if the event were invoked * Add the ability to override the pluralized name of an attribute for creating scopes * Add the ability to halt callback chains by: throw :halt * Add support for dynamic to states in transitions (e.g. :to => lambda {Time.now}) * Add support for using real blocks in before_transition/after_transition calls instead of using the :do option * Add DataMapper support * Include states referenced in transition callbacks in the list of a machine's known states * Only generate the known states for a machine on demand, rather than calculating beforehand * Add the ability to skip state change actions during a transition (e.g. vehicle.ignite(false)) * Add the ability for the state change action (e.g. +save+ for ActiveRecord) to be configurable * Allow state machines to be defined on *any* Ruby class, not just ActiveRecord (removes all external dependencies) * Refactor transitions, guards, and callbacks for better organization/design * Use a class containing the transition context in callbacks, rather than an ordered list of each individual attribute * Add without_#{attribute} named scopes (opposite of the existing with_#{attribute} named scopes) [Sean O'Brien] == 0.3.1 / 2008-10-26 * Fix the initial state not getting set when the state attribute is mass-assigned but protected * Change how the base module is included to prevent namespacing conflicts == 0.3.0 / 2008-09-07 * No longer allow additional arguments to be passed into event actions * Add support for can_#{event}? for checking whether an event can be fired based on the current state of the record * Don't use callbacks for performing transitions * Fix state machines in subclasses not knowing what states/events/transitions were defined by superclasses * Replace all before/after_exit/enter/loopback callback hooks and :before/:after options for events with before_transition/after_transition callbacks, e.g. before_transition :from => 'parked', :do => :lock_doors # was before_exit :parked, :lock_doors after_transition :on => 'ignite', :do => :turn_on_radio # was event :ignite, :after => :turn_on_radio do * Always save when an event is fired even if it results in a loopback [Jürgen Strobel] * Ensure initial state callbacks are invoked in the proper order when an event is fired on a new record * Add before_loopback and after_loopback hooks [Jürgen Strobel] == 0.2.1 / 2008-07-05 * Add more descriptive exceptions * Assume the default state attribute is "state" if one is not provided * Add :except_from option for transitions if you want to blacklist states * Add PluginAWeek::StateMachine::Machine#states * Add PluginAWeek::StateMachine::Event#transitions * Allow creating transitions with no from state (effectively allowing the transition for *any* from state) * Reduce the number of objects created for each transition == 0.2.0 / 2008-06-29 * Add a non-bang version of events (e.g. park) that will return a boolean value for success * Raise an exception if the bang version of events are used (e.g. park!) and no transition is successful * Change callbacks to act a little more like ActiveRecord * Avoid using string evaluation for dynamic methods == 0.1.1 / 2008-06-22 * Remove log files from gems == 0.1.0 / 2008-05-05 * Completely rewritten from scratch * Renamed to state_machine * Removed database dependencies * Removed models in favor of an attribute-agnostic design * Use ActiveSupport::Callbacks instead of eval_call * Remove dry_transaction_rollbacks dependencies * Added functional tests * Updated documentation == 0.0.1 / 2007-09-26 * Add dependency on custom_callbacks * Move test fixtures out of the test application root directory * Improve documentation * Remove the StateExtension module in favor of adding singleton methods to the stateful class * Convert dos newlines to unix newlines * Fix error message when a given event can't be found in the database * Add before_#{action} and #{action} callbacks when an event is performed * All state and event callbacks can now explicitly return false in order to cancel the action * Refactor ActiveState callback creation * Refactor unit tests so that they use mock classes instead of themselves * Allow force_reload option to be set in the state association * Don't save the entire model when updating the state_id * Raise exception if a class tries to define a state more than once * Add tests for PluginAWeek::Has::States::ActiveState * Refactor active state/active event creation * Fix owner_type not being set correctly in active states/events of subclasses * Allow subclasses to override the initial state * Fix problem with migrations using default null when column cannot be null * Moved deadline support into a separate plugin (has_state_deadlines). * Added many more unit tests. * Simplified many of the interfaces for maintainability. * Added support for turning off recording state changes. * Removed the short_description and long_description columns, in favor of an optional human_name column. * Fixed not overriding the correct equality methods in the StateTransition class. * Added to_sym to State and Event. * State#name and Event#name now return the string version of the name instead of the symbol version. * Added State#human_name and Event#human_name to automatically figure out what the human name is if it isn't specified in the table. * Updated manual rollbacks to use the new Rails edge api (ActiveRecord::Rollback exception). * Moved StateExtension class into a separate file in order to help keep the has_state files clean. * Renamed InvalidState and InvalidEvent exceptions to StateNotFound and EventNotFound in order to follow the ActiveRecord convention (i.e. RecordNotFound). * Added StateNotActive and EventNotActive exceptions to help differentiate between states which don't exist and states which weren't defined in the class. * Added support for defining callbacks like so: def before_exit_parked end def after_enter_idling end * Added support for defining callbacks using class methods: before_exit_parked :fasten_seatbelt * Added event callbacks after the transition has occurred (e.g. after_park) * State callbacks no longer receive any of the arguments that were provided in the event action * Updated license to include our names.