validate數組mongoid和Ruby on Rails

Question

我在模型邀請一個字段和屬性等：

field :recipients, :type => Array 

我有4個電子郵件的陣列在我的控制器，如：

@invitation.recipients = ['', '', '', ''] 

我希望在我的模型中驗證每個數組的值與電子郵件正則表達式匹配......例如：

validates_format_of :recipients, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/u, :message => "is not a valid email address" 

如何驗證mongoid中數組的正則表達式？

Answer 1

如何：

RE = /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/u 
validate :recipients_format 
def recipients_format 
    unless recipients.all? { |r| r =~ RE } 
    errors[:recipients] = "are not all valid email addresses" 
    end 
end