Module: StateMachines::Task

Included in:
Task
Defined in:
app/models/state_machines/task.rb

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object



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# File 'app/models/state_machines/task.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, :assigned, :under_supervision, :completed]
    const_set 'EVENTS', [:assign, :cancel, :review, :follow_up, :complete]
    
    after_initialize :set_initial_state
    
    state_machine :state, initial: :new do
      event :assign do
        transition :new => :assigned
      end
      
      state :assigned do
        validates :user_id, presence: true
      end
      
      event :cancel do 
        transition :assigned => :new
      end
     
      event :review do
        transition :assigned => :under_supervision
      end
      
      state :under_supervision do
        # TODO: move logic of Workflow::TasksController#update here
        #validates_associated :result
      end
     
      event :follow_up do 
        transition [:under_supervision, :completed] => :assigned
      end
      
      event :complete do
        # TODO: complete the story through observer
        transition :under_supervision => :completed
      end
      
      before_transition do |object, transition|
        object.event = transition.event.to_s
        object.state_before = transition.from
        
        case transition.event
        when :assign
          object.author_id = object.user_id
        when :cancel
          object.unassigned_user_ids ||= []
          object.unassigned_user_ids << object.user_id
          object.user_id = nil
          object.author_id = nil
          object.result.text = nil if object.result
        when :review
          object.user_id = object.offeror_id
        when :follow_up
          object.user_id = object.author_id
        end
      end
      
      after_transition do |object, transition|
        case transition.event
        when :follow_up
          if object.story.completed?
            object.story.activate
          end
        when :complete
          if object.story.tasks.complete.count == object.story.tasks.count
            object.story.complete
          end
        end
      end
    end
    
    private
    
    def set_initial_state
      self.state ||= :new
    end
  end
end