[CForms] xreporter assertion validation problem

[Joerg Heinicke <jo...@gmx.de>]

It's a problem of "optionally required" as mentioned not only once on 
the list. As a temporary solution I wanted to adapt Vadim's work around 
[1] using assertion validation. Therefore I had a look into the 
XReporter expression language [2] and wrote following form defintion.

<wd:field id="persontype">
   <wd:datatype base="integer"/>
</wd:field>

<!-- NaturalPerson -->
<wd:field id="lastname">
   <wd:label><i18n:text key="lastname"/></wd:label>
   <wd:datatype base="string">
     <wd:validation>
       <wd:assert test="If(persontype = 0, Not(IsNull(lastname)), true)"/>
     </wd:validation>
   </wd:datatype>
</wd:field>
<wd:field id="firstname">
   <wd:label><i18n:text key="firstname"/></wd:label>
   <wd:datatype base="string">
     <wd:validation>
       <wd:assert test="If(persontype = 0, Not(IsNull(firstname)), true)"/>
     </wd:validation>
   </wd:datatype>
</wd:field>

<!-- LegalPerson -->
<wd:field id="name">
   <wd:label><i18n:text key="name"/></wd:label>
   <wd:datatype base="string">
     <wd:validation>
       <wd:assert test="If(persontype = 1, Not(IsNull(name)), true)"/>
     </wd:validation>
   </wd:datatype>
</wd:field>
<wd:field id="commercialRegisterNumber">
   <wd:label><i18n:text key="commercialRegisterNumber"/></wd:label>
   <wd:datatype base="string">
     <wd:validation>
       <wd:assert test="If(persontype = 1, 
Not(IsNull(commercialRegisterNumber)), true)"/>
     </wd:validation>
   </wd:datatype>
</wd:field>

The validation should be clear IMO:
If persontype 0 is selected the lastname and the firstname must not be 
null, otherwise return true.
If persontype 1 is selected the name and the commercialRegisterNumber 
must not be null, otherwise return true.

This works if I sent a form with persontype = 1 and both the fields name 
and commercialRegisterNumber not null. But if does not work if I switch 
to persontype 0 with the fields lastname and firstname null. There the 
validation for the fields name and commercialRegisterNumber fail though 
they are not null! Seems to be somewhat strang IMO.

Does anybody see an obvious mistake or know why?

Joerg

[1] http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=107352171910636&w=4
[2] http://xreporter.cocoondev.org/en/expressions.html

Re: [CForms] xreporter assertion validation problem

[Joerg Heinicke <jo...@gmx.de>]

Hello Bruno,

On 03.02.2004 19:54, Bruno Dumon wrote:

>>     <wd:validation>
>>       <wd:assert test="If(persontype = 0, Not(IsNull(lastname)), true)"/>
>>     </wd:validation>
> 
> The expression language doesn't have a predefined true constant, instead
> 'true' here means a variable named true which likely doesn't exist,
> unless you would happen to have a widget with id 'true'.
> 
> Instead, use the True() function.

replacing true with True() my tests do never fail now. Neither the 
change to the Or() based test like Vadim's test nor simply just 
"Not(IsNull(lastname))" return the expected false. Is there a verbose 
mode available anywhere for debugging what's going on?

Joerg

Re: [CForms] xreporter assertion validation problem

[Joerg Heinicke <jo...@gmx.de>]

Hello Bruno,

On 03.02.2004 19:54, Bruno Dumon wrote:

>>     <wd:validation>
>>       <wd:assert test="If(persontype = 0, Not(IsNull(lastname)), true)"/>
>>     </wd:validation>
> 
> The expression language doesn't have a predefined true constant, instead
> 'true' here means a variable named true which likely doesn't exist,
> unless you would happen to have a widget with id 'true'.
> 
> Instead, use the True() function.

it was indeed naive to assume a constant 'true' - especially as the 
True() function is not mentioned far away from Or() or If() at 
http://xreporter.cocoondev.org/en/expressions.html.

Thanks,

Joerg

Re: [CForms] xreporter assertion validation problem

[Bruno Dumon <br...@outerthought.org>]

On Tue, 2004-02-03 at 19:40, Joerg Heinicke wrote:
<snip/>
>      <wd:validation>
>        <wd:assert test="If(persontype = 0, Not(IsNull(lastname)), true)"/>
>      </wd:validation>

The expression language doesn't have a predefined true constant, instead
'true' here means a variable named true which likely doesn't exist,
unless you would happen to have a widget with id 'true'.

Instead, use the True() function.

-- 
Bruno Dumon                             http://outerthought.org/
Outerthought - Open Source, Java & XML Competence Support Center
bruno@outerthought.org                          bruno@apache.org