dependency check in foreign_links

foreign_links.rb

def check_dependencies
    msg = {}
    self.class.reflect_on_all_associations.map{|e| e.name}.each do |assoc|
      dependency_size = self.send(assoc).size rescue next
      msg[assoc] = dependency_size if dependency_size > 0
    end
    unless msg.empty?
      linked_objects = "#{msg.map{|k,v| "#{k} #{v}"}.join(", ")}"
      errors.add :base, %{The #{self.class} could not be deleted because it is used by 
        #{linked_objects}  }
      throw :abort
    end
  end
end