Re: Handling of optional data tree

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Tim,

Perhaps you can check for the model data's existance first?
<#if (p.share??)> ... </#if>

Darryl
On Feb 11, 2015 10:56 AM, "tim" <[email protected]> wrote:

> Hi,
>
> I have a data model of this kind:
>
> contract
> +contractParties
> +contractParty
> ++share
> +++amount
> +++currency
> ...
>
> I want to display amount and share for each contract party:
> <#list contract[0].contractParties.contractParty as p>
>   Amount: ${p.share.amount!}
>   Share: ${p.share.currency!}
> </#list>
>
> list creates a sequence and that's fine. If there is no contract party,
> this
> will just be omitted -> fine.
> But then I want to access amount anf currency of the share. This works if
> there is a share. It does not work if there is no share, though. If share
> is
> null/empty/missing, it creates an error no matter what I do. I tried
> ${p.share[0].currency!} and ${p.share[0]!.currency!}, but it does not work
> if share is undefined.
>
> Is it possible to either
> - turn off error handling for missing data model fractions or
> - ignore missing paths
> ?
>
> Thanks for your feedback!
>
>
>
> --
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>
>
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<p dir=3D"ltr">Tim,</p>
<p dir=3D"ltr">Perhaps you can check for the model data&#39;s existance fir=
st?<br>
&lt;#if (p.share??)&gt; ... &lt;/#if&gt;</p>
<p dir=3D"ltr">Darryl</p>
<div class=3D"gmail_quote">On Feb 11, 2015 10:56 AM, &quot;tim&quot; &lt;<a=
 href=3D"mailto:[email protected]">[email protected]</a>&gt; wr=
ote:<br type=3D"attribution"><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I have a data model of this kind:<br>
<br>
contract<br>
+contractParties<br>
+contractParty<br>
++share<br>
+++amount<br>
+++currency<br>
...<br>
<br>
I want to display amount and share for each contract party:<br>
&lt;#list contract[0].contractParties.contractParty as p&gt;<br>
=C2=A0 Amount: ${p.share.amount!}<br>
=C2=A0 Share: ${p.share.currency!}<br>
&lt;/#list&gt;<br>
<br>
list creates a sequence and that&#39;s fine. If there is no contract party,=
 this<br>
will just be omitted -&gt; fine.<br>
But then I want to access amount anf currency of the share. This works if<b=
r>
there is a share. It does not work if there is no share, though. If share i=
s<br>
null/empty/missing, it creates an error no matter what I do. I tried<br>
${p.share[0].currency!} and ${p.share[0]!.currency!}, but it does not work<=
br>
if share is undefined.<br>
<br>
Is it possible to either<br>
- turn off error handling for missing data model fractions or<br>
- ignore missing paths<br>
?<br>
<br>
Thanks for your feedback!<br>
<br>
<br>
<br>
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Sent from the freemarker-user mailing list archive at Nabble.com.<br>
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