Re: [xwiki-users] Need help with velocity+json

27 Jul 2015

      Thxs a lot: "put" is my new friend :-)

Here the answer:
#set ($MyArray={
  'Index1':{'Field1':'value1','field2':'value2'},
  'Index3':{'Field1':'A value','field2':'Another value'}
})
$MyArray.getClass().getName()
* Original map
$jsontool.serialize($MyArray)
* I Modify the 'Index3' entrie:
#set ($discard=$MyArray.put('Index3',{'Field1':'A modified value','field2':'Another modified value'}))
$jsontool.serialize($MyArray)
* I add the 'Index2' entrie:
#set ($discard=$MyArray.put('Index2',{'Field1':'Addon value','field2':'Another addon value'}))
$jsontool.serialize($MyArray)

--------------------------------------------
En date de : Lun 27.7.15, Marius Dumitru Florea <[email protected]> a écrit :

 Objet: Re: [xwiki-users] Need help with velocity+json
 À: "Pascal BASTIEN" <[email protected]>, "XWiki Users" <[email protected]>
 Date: Lundi 27 juillet 2015, 10h47

 Hi Pascal,

 On Mon, Jul 27, 2015 at 11:42
 AM, Pascal BASTIEN
 <[email protected]>
 wrote:
...
Hello,
My goal is to send array json variable
 from velocity to javacript or more precisely I want loop
 over all objects of same Class of a page and put them in a
 json array (http://platform.xwiki.org/xwiki/bin/view/DevGuide/APIGuide#HAccessobjectsfro...)
But I didn't
 manage to edit an velocity array variable (add an entries or
 modify one) AND
With velocity I declare my array like this:
...

...
#set
 ($MyArray={
   'Index1':{'Field1':'value1','field2':'value2'},
   'Index3':{'Field1':'A
 value','field2':'Another value'}
})
This
 is not an array but a Map
 http://docs.oracle.com/javase/7/docs/api/java/util/Map.html
 , which is
 quite different. In any case,
 when you're not sure about the type of a
 Velocity variable you should print
 $myVar.getClass().getName() to see
 the real
 Java type and then you should check the Javadoc for that
 type
 to see what methods you can call on the
 variable.

 I'll let you
 discover how to modify a Java map object.

 Hope this helps,
 Marius