Re: [Xsltforms-support] Binding to the absence of a node

[Chimezie O. <chi...@gm...>]

Hello, Dan (CC'ed support list).  Thanks for the suggestion.

I was eventually able to get it to work via:

                                <xforms:group     ref=".[not(AbsentElement)]">
                                    <xforms:trigger>
                                        <xforms:label>Add absent
element</xforms:label>
                                        ... action ..
                                    </xforms:trigger>
                                </xforms:group>


On Thu, May 24, 2012 at 10:03 AM, Dan McCreary <dan...@gm...> wrote:
> Hello Chimezie,
>
> I have done this but I recall I just used the simpler following notation:
>
> <xforms:group ref="not(AbsentElement)">
>
> or perhaps
>
> <xforms:group ref="./not(AbsentElement)">
>
> Have you tried these?
>
> - Dan
>
> On Thu, May 24, 2012 at 7:07 AM, Chimezie Ogbuji <chi...@gm...> wrote:
>>
>> Hello, I'm trying to support a situation where a group of controls (or
>> a single control) appear only if another node in the same instance
>> document does not appear.  When I was using XForms extension for
>> Firefox in the past, I was able to do it this way:
>>
>>
>>                            <xforms:group
>> ref="current()[not(AbsentElement)]">
>>                                <xforms:trigger>
>>                                    <xforms:label>Add Skilled response
>> section</xforms:label>
>>                                    .. action to add AbsentElement to
>> context..
>>                                </xforms:trigger>
>>                            </xforms:group>
>>
>> The general idea is to only show a trigger if AbsentElement is not a
>> child of the current context, which will add that element if clicked.
>> However, I get the following exception
>>
>> XSLTForms Exception
>> --------------------------
>>
>> Error parsing the following XPath expression :
>>
>> current()[not(AbsentElement)]
>>
>> Unknown operator at '[not(AbsentElement)]' in
>> 'current()[not(AbsentElement)]'
>>
>> Can this be done in XSLTForms?
>>
>> Thanks.
>>
>> -- Chime
>>
>>
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>
>
>
>
> --
> Dan McCreary
> NoSQL Evangelist
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