class Mission < ActiveRecord::Base
  
  belongs_to :owner, :class_name => "User"
  has_many :mission_agents, :dependent => :destroy
  has_many :agent_steps, :through => :mission_agents
  accepts_nested_attributes_for :mission_agents, allow_destroy:true
  
  mount_uploader :cover_img, MissionCoverUploader
  process_in_background :cover_img
  
  def agent_position_count
    return self.mission_agents.count
  end
  
  def confirmed_agent_count
    return self.mission_agents.count
  end
  
end