自定义EmailValidator不起作用

102

晶须

我有一个基于ruby指南的自定义电子邮件验证器类：

class EmailValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, value)
    unless value =~ /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
     record.errors[attribute] << (options[:message] || "is not an email")
    end
  end
end

此类位于app / validators / email_validator.rb中

模型：

class User < ActiveRecord::Base

    validates :name, :email, presence: true
validates :email, email: true

end

错误：

`rescue in block in validates': Unknown validator: 'EmailValidator' (ArgumentError)

运行测试（rspec）时出现此错误。

Paritosh piplewar

试试这个

def validate_each(record, attribute, value)
    begin
      r =~ /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
    rescue Exception => e
      r = false
    end
    record.errors[attribute] << (options[:message] || "is not an email") unless r
end

专业类型：

看起来您正在寻找电子邮件验证程序，为什么不使用此验证程序

require 'mail'
class EmailValidator < ActiveModel::EachValidator
  def validate_each(record,attribute,value)
    begin
      m = Mail::Address.new(value)
      # We must check that value contains a domain and that value is an email address
      r = m.domain && m.address == value
      t = m.__send__(:tree)
      # We need to dig into treetop
      # A valid domain must have dot_atom_text elements size > 1
      # user@localhost is excluded
      # treetop must respond to domain
      # We exclude valid email values like <[email protected]>
      # Hence we use m.__send__(tree).domain
      r &&= (t.domain.dot_atom_text.elements.size > 1)
    rescue Exception => e   
      r = false
    end
    record.errors[attribute] << (options[:message] || "is invalid") unless r
  end
end

一定要在之前加载此类，我想您知道要这样做（因为许多其他答案已经很好地描述了它）

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