class Memo < ActiveRecord::Base
	include Redmine::SafeAttributes
	belongs_to :forums
	belongs_to :author, :class_name => "User", :foreign_key => 'author_id' 
	
	safe_attributes "author_id",
					"subject",
					"content",
					"forum_id",
					"last_reply_id",
					"lock",
					"parent_id",
					"replies_count",
					"sticky"
	validates_presence_of :author_id, :content, :forum_id, :subject
	validates_length_of :subject, maximum: 50
	validates_length_of :content, maximum: 2048	
	
	def replies
	  Memo.where("parent_id = ?", id)
	end
	def locked?
		self.lock
	end
	
	def editable_by? user
		!self.lock
	end

	def destroyable_by? user
		
	end
end