class List < ActiveRecord::Base
 
belongs_to :user
 
def self.is_indexable_by(user, parent = nil)
  user.lists.include?(self)
end
 
def self.is_creatable_by(user, parent = nil)
  !user.nil?
end
 
def is_updatable_by(user, parent = nil)
  user == author && self.is_active?
end
 
def is_deletable_by(user, parent = nil)
  user == author
end
 
def is_readable_by(user, parent = nil)
  user.lists.include?(self)
end
 
def is_active
end
 
has_many :items, :dependent => :destroy
validates_presence_of :name, :message => "can't be blank. Please give your list a name."
 
end