如何验证模型中的多个电子邮件地址? [英] How can I validate multiple email addresses in a model?

问题描述

例如:逗号分隔在单个文本字段中:ma​​[e-mail], mail2@someotherdomain, ...

e.g.: comma seperated in a single textfield: [e-mail], mail2@someotherdomain, ...

推荐答案

您可以使用 TMail::Address 模块来验证电子邮件为 此处显示.可以使用 validate 方法添加自定义验证.

You can use the TMail::Address module to validate an email as shown here. Custom validations can be added with the validate method.

validate :check_email_addresses

def check_email_addresses
  email_addresses.split(/,\s*/).each do |email|
    TMail::Address.parse(email)
  end
rescue TMail::SyntaxError
  errors.add(:email_addresses, "are not valid")
end

<小时>

更新: TMail::Address 模块似乎对有效电子邮件地址的定义过于宽松(请参阅下面的评论)，因此您可以使用正则表达式.

---

Update: The TMail::Address module seems to be too lax on what is considered a valid email address (see comments below) so instead you can use a regular expression.

validate :check_email_addresses

def check_email_addresses
  email_addresses.split(/,\s*/).each do |email| 
    unless email =~ /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i
      errors.add(:email_addresses, "are invalid due to #{email}")
    end
  end
end

有多种用于验证电子邮件地址的正则表达式解决方案.请参阅此页面了解详情.

There are a variety of regular expression solutions for validating an email address. See this page for details.

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