rubyonrailsin

> Aldric Giacomoni wrote:
>> Robert Walker wrote:
>>> Marnen Laibow-Koser wrote:
>>>> Robert Walker wrote:
>>>>> Rajinder Yadav wrote:
>>>>>> How can I validate and email address without using complex reg-
>>>>>> ex is
>>>>>> there a simple rails way to do this?
>>>>>
>>>>> Are you nuts? That's just the sort of thing Regexp was designed
>>>>> to do.
>>>>> And, it's not really all that complex.
>>>>
>>>> Yes it is. The *only* correct regexps I am aware of for e-mail
>>>> addresses are on the order of a page in length. All shorter
>>>> regexps
>>>> reject some valid e-mail addresses.
>>>
>>> Thanks Marnen. I stand corrected.
>>>
>>> However, just to clarify, are you saying that Regexp is still the
>>> best
>>> approach? Given that what you're saying is true, which I'm sure it
>>> is,
>>> then I could imagine that performing this validation without using
>>> Regexp would be even more complex and require quite a bit more code.
>>
>> The best approach is to download a plugin for email validation,
>> because
>> someone, somewhere, has already done all the work ;-)
>
> I wouldn't trust those plugins without inspecting their algorithms. I
> would probably use something like the following regex:
> /^.+@.+\..+$/
>
> This checks that it's of the form "something@something.something", but
> performs no further validation.

Good point. It annoys me to no end when I can't enter philip+sitename@pjkh.com
as a valid email address. Seems this works about half the time.

The bottom line is if you are really concerned about getting a valid
email address, the only way to completely verify it is to send them an
email and make them confirm it via a link in that email. Headache,
yeah, but it works.

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