New subject: [xwiki-users] Fw : Re: Question about Page type property (and an issue) in a Class (resolved)

17 Apr 2015

...
   I create
MyClass/Sheet/Template and in  another AnotherClass I add a Page type property
with:
  - Display Type : select
 - XWiki Class Name: MyClass
 - Id Field Name: doc.fullName
 - Value Field Name : doc.name

 My purpose is to  display a list of page (with MyClass object): this point is
 working well but ...

  I want that the user  select in my select
list: one page OR nothing.
  ...
...
  in
 order to add this item to a Page
 (actually DatabaseList) property you
 have to
 write a custom displayer. Another solution may be to create 
Here I created a  nice custom displayer in MyClass: Property type: Page (or database
list)
It's filtered hidden doc and add one Empty entry in select list.
- Display Type : select
Hibernate Query (to filter hidden doc because http://jira.xwiki.org/browse/XWIKI-12031
issue): select distinct doc.name from XWikiDocument as doc, BaseObject as obj where
doc.fullName=obj.name and obj.className='FormSMQ.EAClass' and
doc.space='FormSMQ' and doc.hidden=false
Custom Display:
{{velocity}}
#if ($type == 'edit')
  #set($MyClass=$object.getxWikiClass())
  #set($list=$MyClass.get($name).getListValues())
  #set ($MySelectList="<select id='" + "${prefix}_${name}" +
"' size='1' name='" + $prefix + ${name} +
"'>")
  #set ($Selected="")
  #if ($!value=='')
    #set ($Selected=" selected='selected'")
  #end
  #set ($MySelectList=$MySelectList + "<option value=''" + $!Selected
+ " label='" +
$services.localization.render('FormSMQ.PiacJ2Class.Empty') + "'>"
+ $services.localization.render('FormSMQ.PiacJ2Class.Empty') +
"</option>")
  #foreach($listitem in $list)
    #if ($listitem==$value)
      #set ($Selected=" selected='selected'")
    #else
      #set ($Selected="")
    #end
    #set ($MySelectList=$MySelectList + "<option value='" + $listitem +
"'" + $!Selected + " label='" + $listitem +
"'>" + $listitem + "</option>")
  #end
  #set ($MySelectList=$MySelectList  + "</select>")
  #set ($MySelectList=$MySelectList  + "<input type='hidden'
value='' name='" + ${prefix} + ${name} +"'>")
  {{html clean=false}}
  $MySelectList
  {{/html}}
#elseif (($type == 'view') && ($!value!=''))
  [[$value]]
#else
  $value
#end
{{/velocity}}

Use $object.getxWikiClass().get($name).getMapValues() with  XWiki Class Name: MyClass +Id
Field Name: doc.fullName + Value Field Name : doc.name

First I used this awfull code (to forget of course):
#if ($type == 'edit')
  #set ($propertyClass = $object.getxWikiClass().get($name))
  #set ($MySelectList = $doc.displayEdit($propertyClass, $prefix, $object))
  #set ($Empty=$services.localization.render('FormSMQ.PiacJ2Class.Empty'))
  #if ($!value!='')
    ## if not empty, add "Empty" "option value"
    #set($EmptyValueAdded='<option value="" label=' + $Empty +
'>' + $Empty + '</option><option value=')
    #set ($MySelectList = $stringtool.replaceOnce($MySelectList, '<option
value=', $EmptyValueAdded))
  #else
    ## if empty, add SELECTED "Empty" "option value"
    #set($EmptyValueAdded="<option selected='selected' value=''
label='" + $Empty + "'>" + $Empty +
"</option>")
    #set ($MySelectList = $stringtool.replaceOnce($MySelectList, "<option
selected='selected' value='' label=''></option>",
$EmptyValueAdded))
  #end

Thxs for your help.

Pascal B