[ic] Email and Unique Account settings

Davor Ocelic docelic at spinlocksolutions.com
Mon Nov 26 08:49:23 EST 2007

On Sun, Nov 25, 2007 at 06:19:09PM -0600, EEUL Support wrote:
> I have gone though several dozen old messages using the search feature 
> and I am still at a loss figuring out how the eliminate people creating 
> duplicate accounts via checking for a unique email address.
> Can someone give me a simple set of instructions for modifying 
> new_account.html or another area of IC to check the email address 
> against  UserDB.

Hi Brian,

Here's what I do. It's a bit more elaborate and there are more ways
to go about it, but in my setup:

1) I modify form profile to require that already_registered variable is
   false (already_registered=false).

2) I have a function that does a query on the database looking for
   email, and if it finds it, it sets already_registered to 1 (so that
   the form validation will fail), and it sets email error to the 
   appropriate message.

Something like this:

In the profile I add:

   &perl $Tag->check_rgdata;

And then check_rgdata usertag, among other things, does this:

$sql = "select email from userdb where email = '$email'";
$Tag->query({ sql => $sql, hashref => 'check_rgdata_results_fnc' });

$ptrfnc = $Vend::Interpolate::Tmp->{check_rgdata_results_fnc};

if ($ptrfnc and @$ptrfnc) {                           
                        name => 'email',           
                        overwrite => 1,                       
                        set => "Already registered email"
        $CGI->{already_registered} = 1;               
        return 0;                                     
return 1;


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