Sha256: 0ce2a930b17334ec4ea2eef8a069719f630c2eb2d18133017c700b7b62a5e475
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Size: 1.12 KB
Versions: 17
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Stored size: 1.12 KB
Contents
# A valid example
class TrafficLight
include DataMapper::Resource
property :id, Serial # see note 1
is :state_machine, :initial => :green, :column => :color do
state :green, :enter => Proc.new { |o| o.log << "G" }
state :yellow, :enter => Proc.new { |o| o.log << "Y" }
state :red, :enter => Proc.new { |o| o.log << "R" }
event :forward do
transition :from => :green, :to => :yellow
transition :from => :yellow, :to => :red
transition :from => :red, :to => :green
end
event :backward do
transition :from => :green, :to => :red
transition :from => :yellow, :to => :green
transition :from => :red, :to => :yellow
end
end
before :transition!, :before_hook
after :transition!, :after_hook
def before_hook
before_hook_log << attribute_get(:color)
end
def after_hook
after_hook_log << attribute_get(:color)
end
def log; @log ||= [] end
def before_hook_log; @bh_log ||= [] end
def after_hook_log; @ah_log ||= [] end
attr_reader :init
def initialize(*args)
(@init ||= []) << :init
super
end
end
TrafficLight.auto_migrate!
Version data entries
17 entries across 17 versions & 2 rubygems