  def self.get_my_folder(user_id)

    return Folder.where("(owner_id=#{user_id}) and (xtype='#{Folder::XTYPE_USER}')").first
  end
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.