Module: Enum::Transition

Extended by:
ActiveSupport::Concern
Defined in:
lib/enum/transition.rb,
lib/enum/transition/version.rb

Defined Under Namespace

Modules: ClassMethods

Constant Summary collapse

VERSION = 
'0.1.0'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/enum/transition.rb', line 5

def self.included(base)
  base.class_eval do
    after_validation :ensure!
    base.extend ClassMethods
  end
end

Instance Method Details

#ensure! ⇒ Object 



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# File 'lib/enum/transition.rb', line 26

def ensure!
  self.class.name.constantize.instance_variable_get('@enum_columns_array').each do |column|
    if !self.new_record?  && self.send("#{column}_changed?")
      unless self.respond_to? "#{self.send("#{column}_was")}_to_#{self.send("#{column}")}"
        self.errors.add(:base, "Status can't be changed from #{self.send("#{column}_was")} to #{self.send("#{column}")}")
      end
    end
  end
end