Module: StateMachines::Story

Included in:
Story
Defined in:
app/models/state_machines/story.rb

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object



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# File 'app/models/state_machines/story.rb', line 2

def self.included(base)
  base.extend ClassMethods
  
  base.class_eval do
    include Model::MongoDb::StateVersionAttributes
    
    attr_accessor :current_user
    
    const_set 'STATES', [:new, :tasks_defined, :active, :completed, :closed]
    const_set 'EVENTS', [:initialization, :setup_tasks, :activate, :complete]
    
    after_initialize :set_initial_state
    
    state_machine :state, initial: :new do
      event :initialization do
        transition :new => :initialized
      end
      
      event :setup_tasks do
        transition :initialized => :tasks_defined  
      end
      
      state :tasks_defined do
        #validates_associated :tasks
        validate :presence_of_tasks
      end
      
      event :activate do
        transition [:tasks_defined, :completed] => :active
      end
      
      event :complete do
        transition :active => :completed
      end
      
      event :close do
        transition :completed => :closed
      end
      
      before_transition do |object, transition|
        object.event = transition.event.to_s
        object.state_before = transition.from
      end
    end
    
    private
    
    def set_initial_state
      self.state ||= :new
    end
    
    def presence_of_tasks
      self.tasks.delete_if{|t| t.name.blank? && t.text.blank? }
      
      if tasks.select{|t| !t.valid?}.any?
        errors[:base] << I18n.t(
          'activerecord.errors.models.story.attributes.base.invalid_tasks'
        )
      end
      
      if tasks.none?
        errors[:base] << I18n.t(
          'activerecord.errors.models.story.attributes.base.missing_tasks'
        )
      end
    end
  end
end