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CFIF statement to validate email address

Posted on 2009-04-13
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Last Modified: 2012-05-06
Can someone help me write a CFIF statement to validate email address, I want to transfer email lists from other databases but i want to make sure all the emails that go into the new database are emails in the correct format. I use

validate="regular_expression"
pattern="[A-Za-z0-9_]+@[A-Za-z0-9_]+\.[A-Za-z]+"

for my form but i need to know how to use this in a CFIF tag??
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Question by:overcolor
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Expert Comment

by:erikTsomik
ID: 24131646
try this
<cfinput type="text" name="email" message="Email address is impoperly formatted." validate="regular_expression" pattern="^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*\.(([a-z]{2,3})|(aero|coop|info|museum|name))$">
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_agx_ earned 2000 total points
ID: 24131682
>  how to use this in a CFIF tag??

Try the IsValid(..) function:
http://livedocs.adobe.com/coldfusion/8/htmldocs/functions_in-k_37.html

<cfif IsValid("email", form.yourFieldName)>
it is valid
<cfelse>
 not valid
</cfif>

> I use  ... for my form

You could also just use <cfinput validate="email" ..>
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Expert Comment

by:_agx_
ID: 24131710
erikTsomik wrote:
> try this <cfinput type="text" name="email" ....>

Personally, I would use validate="email" for the client side validation.  It is a lot simpler.  Though you could also use that expression on the server side. See the IsEmail function at cflib.org, for an updated version of that expression:

http://www.cflib.org/index.cfm?event=page.udfbyid&udfid=216
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