验证多个电子邮件并处理Rails中的错误的最佳方法是什么？ [英] What's the best way to validate multiple emails and handle errors in Rails?
问题描述
在目前我正在建立的应用程序中，我有一个textarea，用户将输入一个逗号分隔的电子邮件地址列表。
In the current app I'm building I've got a textarea where a user will enter a comma-delimited list of email addresses.
我目前将列表分成数组，然后逐个保存。但是，如果我有这个输入...
I'm currently splitting the list into an array and then saving one by one. But if, say, I have this input...
blah@example.com，test @ example，foo@example.com
blah@example.com, test@example, foo@example.com
...然后blah@example.com将被保存，但保存test @ example将失败。所以我需要从逗号分隔的值字符串中删除blah@example.com，当我显示test @ example不是有效的电子邮件地址时，我传回给textarea。
... then blah@example.com will be saved, but saving test@example will fail. So I then need to remove blah@example.com from the comma-delimited string of values that I pass back to the textarea when I show the error that test@example isn't a valid email address.
有没有更好的方法来验证这些在服务器端，处理错误，而不会在控制器中变得丑陋/丑陋？
Is there a better way to validate these on the server side and handle errors without getting fancy / ugly in the controller?
感谢提前！
推荐答案
假设这是一个模型has_many电子邮件，电子邮件模型使用：validate_email，您可以执行以下操作：
Assuming this is a model that has_many emails, and the email model uses :validate_email, you could do something like the following:
class Foo < ActiveRecord::Base
validate :must_not_have_invalid_addresses
...
def emails=(addresses)
@invalid_addresses = []
addresses.split(",").each do |address|
@invalid_addresses.push(address) unless emails.create({:address => address})
end
end
def must_not_have_invalid_addresses
errors.add_to_base("Some email addresses were invalid") unless @invalid_addresses.empty?
end
end
这提供了验证错误+一系列无效的电子邮件地址，如果您愿意，您可以访问您的视图。
This provides a validation error + an array of the invalid email addresses which you can make accessible to your view if you like.
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