Help with Email Validation

[biiiink]

Hello

 

I have an email field in a Clients table that I would like to ensure has a valid email address to avoid any issues with typos and such

 

I'm not quite sure how I would go about doing this

 

Also, the field needs to be able to be empty as well

 

 

[comment]

It depends on how you define "a valid email address". See:

http://fmforums.com/forum/topic/36766-grab-the-email/?p=170870

[biiiink]

I guess im just looking to make sure that it has an "@" and a period in it.

 

I found this through google, and it seems to work well:

Let ([ L = Length ( Self ) ;                                   // get length of eMail address
         At = Position ( Self ; "@" ; 1 ; 1 ) ;                // Find at least one @ signred
         Period = Position ( Self ;"." ;L ; -1 ) ] ;           // Find at least one period from a right to left search
         At > 1 and At < ( Period - 2 ) and Period < (L - 1)   // Return boolean T/F if @ and period were found in a normal email range
       )

But how do I allow the field to be empty as well?

[Lee Smith]

Biiiink,

 

Have you done a search at http://www.briandunning.com for email?

 

There are a ton of Custom Functions that deal with all aspects of parsing email addresses.

 

HTH

Lee

[comment]

I guess im just looking to make sure that it has an "@" and a period in it.

 

That could be done very simply by =

 

PatternCount ( Self ; "@" ) and PatternCount ( Self ; "." ) or IsEmpty ( Self )

 

 

 

But how do I allow the field to be empty as well?

I didn't test your calculation, but I believe you could simply add:

...   or IsEmpty ( Self )

to the final line?

[biiiink]

What I posted above seems to work for my purposes.

 

I've put it in the Validate by Calculation section for the Email Field, but again, how do I allow the field to be empty and it not return an error?

 

I didn't test your calculation, but I believe you could simply add:

...   or IsEmpty ( Self )

to the final line?

 

hmmm...I thought I tried that earlier and it didn't work, but it works now.  I must have done something wrong the first time.

 

Thanks for your help