Display the list of required input

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Julien,

Note that recently we changed the notion of what it means to be  
"valid", in anticipation from a change in the XForms 1.1 spec (a  
change which we hope will go through). So required-but-empty fields  
are now considered invalid as well, but this was not the case not so  
long ago.

You can look at the error-summary.xhtml sample for an example of how  
to capture xforms-valid / xforms-invalid events and build an error  
summary.

We use an enhanced version of this in Form Runner.

-Erik

On May 16, 2008, at 12:35 AM, Bittard, Julien wrote:
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Erik,

> Note that recently we changed the notion of what it
> means to be  
> "valid", in anticipation from a change in the XForms
> 1.1 spec (a  
> change which we hope will go through).

Where is this change in the 1.1 spec?

> So required-but-empty fields  
> are now considered invalid as well,

I thought this was precisely what the addition of the
xforms datatypes that mirror the built-in XML Schema
datatypes allowed? If I bind a xforms datatype
xforms:date to a nodeset, and also specify
"required=true()", does the required MIP override the
fact that the xforms datatype allows an empty string?

Thanks,

Don


     



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>> Note that recently we changed the notion of what it
>> means to be
>> "valid", in anticipation from a change in the XForms
>> 1.1 spec (a
>> change which we hope will go through).
>
> Where is this change in the 1.1 spec?

It is not there yet, we just hope it will be, and so far the Working  
Group has been receptive to the idea.

> I thought this was precisely what the addition of the
> xforms datatypes that mirror the built-in XML Schema
> datatypes allowed? If I bind a xforms datatype
> xforms:date to a nodeset, and also specify
> "required=true()", does the required MIP override the
> fact that the xforms datatype allows an empty string?

"required" just means the value is required. So far, this did not  
influence the "valid" MIP. But we think it should. A node can be  
invalid for multiple reasons: @type attribute, type assigned by  
schema, and type assigned by xsi:type; and constraint expressions  
evaluating to false(). The spec already says that all the constraints  
must be satisfied for the node to be valid. So to that list, the  
suggestion is to add "required but empty".

One reason for this is that submission already performs this check,  
but the rest of XForms doesn't. So we have an inconsistency. Further,  
XForms 1.1 adds a @validate attribute which implicitly introduces a  
separate definition of validity. So in order to make everything  
consistent, we propose to simply include "required but empty" as one  
more constraint affecting validity. This way, there is less confusion,  
and the spec is simpler too.

So the answer to your question is yes, xforms:date +  
@required="true()" will make the field invalid. Do you see a drawback  
to that?

-Erik

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