W3C home > Mailing lists > Public > public-xformsusers@w3.org > November 2016

The constraint Property

From: Steven Pemberton <steven.pemberton@cwi.nl>
Date: Mon, 28 Nov 2016 10:38:54 +0100
To: "public-xformsusers@w3.org" <public-xformsusers@w3.org>
Message-ID: <op.yrms24mjsmjzpq@steven-aspire-s7>
https://www.w3.org/community/xformsusers/wiki/XForms_2.0#The_constraint_Property

Has this text:

"Note:
Specifying minimum and maximum occurrences for nodes in the instance data  
can be achieved by using the count() function within a constraint  
property."

I'd like to convert this note into an example.

So, I assume what is meant is that you can do something like this:

	<bind ref="wishes" constraint="count(wish)&lt;4"/>

However, I'm not sure when this would show up, except with a submit.

If you do a repeat:

	<repeat ref="wishes/wish">
	    <input ref="."><label>What is your wish?</label></input>
	</repeat>

the repeat wouldn't stop you adding new wishes.

Can anybody think of a good example?

Steven
Received on Monday, 28 November 2016 09:39:36 UTC

This archive was generated by hypermail 2.3.1 : Monday, 28 November 2016 09:39:37 UTC