Re: [deng-talk] calculate problem

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hello Ben,

sorry, no model item property is supported at the moment in DENG

ciao
ste

Ben Kimball ha scritto:
> Hey all.
> 
> I just put together a simple offline table lookup form. It has two
> instances; one for user interaction (integers specifying row and column,
> plus a third for output) and one for the data table, which is in an XML
> file. The output element has a bind element specifying a calculation to do
> the actual lookup:
> 
> ...
> <xf:bind nodeset="/root/xp"
> calculate="instance('xptable')/row[@lvl=instance('form')/lvl]/xp[@cr=instanc
> e('form')/cr]"/>
> ...
> 
> In formsPlayer this is working correctly; anytime focus leaves an input box,
> fP recalculates the db lookup and updates the output element with the new
> value. In DENG, though, the output element remains blank.
> 
> Here's a sample of the data table file:
> 
> <?xml version="1.0" encoding="iso-8859-1"?>
> <xptable>
>     <row lvl="1">
>         <xp cr="1">300</xp>
>         <xp cr="2">600</xp>
>         <xp cr="3">900</xp>
>         <xp cr="4">1350</xp>
>         <xp cr="5">1800</xp>
>         <xp cr="6">2700</xp>
>         <xp cr="7">3600</xp>
>         <xp cr="8">5400</xp>
>         <xp cr="9">7200</xp>
>         <xp cr="10">10800</xp>
>     </row>
>     <row lvl="2">
>         <xp cr="1">300</xp>
>         <xp cr="2">600</xp>
>         ...
> 
> Any ideas? Maybe my XPath expression is bad? I'm brand new to it, so I
> wouldn't be surprised.
> 
> You can check out the (non-) working code at
> <http://ben.vpd.utexas.edu/xforms/> (DENG loader page) or
> <http://ben.vpd.utexas.edu/xforms/xp.html> (if you're not using DENG). Note
> that the fP-specific <?import?> tag in the <head> element needs to come out
> for DENG to parse the file.
> 
> Cheers,
> Ben
>