27 Jan
2016
27 Jan
'16
10:34 a.m.
On Tue, Jan 26, 2016 at 8:20 PM, Mark Sack <mark.sack(a)secti.al.gov.br>
wrote:
In 7.4, I've created an app within minutes. One of
the properties in the
app
is a computed field that returns a list of users that meet some specific
criteria. If I leave the custom display field for the property blank, the
contents are displayed as follows:
[XWiki.john_smith, XWiki.mark_sack]
This must be the result / output of rendering the "script" meta property of
your computed field.
What I would really like to do is display them as hyperlinks to the
corresponding user page. I thought that I could use a script in the custom
display field to accomplish this. Reading the following note
http://www.xwiki.org/xwiki/bin/view/FAQ/Which+variables+I+can+use+in+%22Cus…
there are some variables available. It looks like the $value variable
should
contain the computed list of users. But if I put a script like the
following
into the custom display field:
{{velocity}}
$name
$prefix
$object
$type
$value
{{/velocity}}
the result is as follows
Usuarios
Secti.Admin.Setores.Code.SetoresClass_0_
com.xpn.xwiki.api.Object@543f3466
view
$value
The first four values are correct as far as I can tell. But the $value
variable does not appear to be populated. Does anyone have a suggestion as
to how I can achieve my desired result with the hyperlinks?
$value is null because computed fields don't have a value stored in the
database. Their "value" is dynamic, computed by rendering the "script"
meta
property. You have two options:
(1) Render the "script" meta property in the custom displayer and use the
data that has been put in the Velocity context (assuming you're using
Velocity in the "script" value)
{{velocity}}
#set ($script = $object.getxWikiClass().get($name).getValue('script'))
#set ($classSyntax = $xwiki.getDocument($object.documentReference).syntax)
#set ($discard = $doc.getRenderedContent($script, $classSyntax))
## Assuming $users is set in the "script" meta property
$users
{{/velocity}}
(2) Most of the time you don't need to access the "raw" value of a computed
field. If you're only interested in displaying it then it's easier to
generate the hyperlinks directly in the "script" meta property. Which is
equivalent with leaving the "script" meta property empty and putting all
the code in the custom displayer.
Hope this helps,
Marius
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