Module: Switcher::ActiveRecord

Defined in:
lib/switcher/adapters/active_record.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/switcher/adapters/active_record.rb', line 3

def self.included(base)
  base.extend Switcher::ClassMethods

  base.class_eval do
    include Switcher

    after_initialize do
      self.class.class_variable_get(:@@__specs__).each do |spec|
        spec_name     = spec.name
        state_current = read_attribute(spec_name)
        state_prev    = (has_attribute?("#{spec_name}_prev") ? read_attribute("#{spec_name}_prev") : nil)

        self.instance_variable_set(:"@#{spec_name}_statement", Statement.new(self, spec, state_current, state_prev))
      end
    end

    before_validation do
      self.class.class_variable_get(:@@__specs__).each do |spc|
        spc_name = spc.name

        current_state = self.instance_variable_get(:"@#{spc.name}_statement").state_current
        write_attribute(spc_name, current_state)
      end
    end
  end
end

Instance Method Details

#switch_from(orig, event, *args) ⇒ Object 



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# File 'lib/switcher/adapters/active_record.rb', line 30

def switch_from(orig, event, *args)
  return false unless (self.respond_to?(:"can_#{event}?") and self.send(:"can_#{event}?"))

  self.class.class_variable_get(:@@__specs__).each do |spc|
    spc_name = spc.name

    self.instance_variable_get(:"@#{spc_name}_statement").publish(event, orig, args)

    write_attribute(spc_name, self.send(:"#{spc_name}"))
    if has_attribute?("#{spc_name}_prev")
      write_attribute("#{spc_name}_prev", self.send(:"#{spc_name}_prev"))
    end
  end

  true
end