Condition - restrict maximum checkboxes

[tvulucy]

Morning.

I have a report request form with 10 checkboxes for different reports, but the user is only allowed to request a maximum of 3

Can I create a condition that checks to see whether they have selected more than 3 reports, or will I need to add some javascript for this?

Thanks
Lucy

[russellr]

Hi,

JavaScript will be more straightforward, but, of course, only works if JS is enabled in the user's browser.

To do this just in FormMail, I recommend the following:

1. Each checkbox has a value of '1', say
2. You use "derive_fields" to derive a field which is the concatenation of all the checkbox fields:
   

   name="derive_fields" value="TestCheck=fld1.fld2.fld3.fld4...."

3. You use a condition to check that the "TestCheck" field is no more than three 1's:
   

   @TEST@TestCheck~1{1,3}@You must select no more than 3 reports@

Something like that, anyway.

[tvulucy]

Hi

Not having much luck with this I'm afraid - I'm getting:

Warning: Delimiter must not be alphanumeric or backslash in /tvu-env/virtualhosts/tvu.boxnewmedia.com/doc-root/formmail.php on line 3562

Text file of the code I'm using is attached (you'll need to add a recipient)

Thanks for your help
Lucy

[russellr]

Hi,

You've got the delimiters around the wrong way. You want "#:" not ":#".

The internal delimiter comes first.