class StatefulEnum::Machine

Attributes

events[R]

Public Class Methods

new(model, column, states, prefix, suffix, &block) click to toggle source
# File lib/stateful_enum/machine.rb, line 7
def initialize(model, column, states, prefix, suffix, &block)
  @model, @column, @states, @events = model, column, states, []
  @prefix = if prefix
    prefix == true ? "#{column}_" : "#{prefix}_"
  end
  @suffix = if suffix
    suffix == true ? "_#{column}" : "_#{suffix}"
  end

  # undef non-verb methods e.g. Model#active!
  states.each do |state|
    @model.send :undef_method, "#{@prefix}#{state}#{@suffix}!"
  end

  instance_eval(&block) if block
end

Public Instance Methods

event(name, &block) click to toggle source
# File lib/stateful_enum/machine.rb, line 24
def event(name, &block)
  raise ArgumentError, "event: :#{name} has already been defined." if @events.map(&:name).include? name
  @events << Event.new(@model, @column, @states, @prefix, @suffix, name, &block)
end