How do I determine the length of a list in RedDot/OpenText?

Question

I have a page with a list element attached. How do I determine the number of items in that list? Can use render tags, asp, or any other technique (so long as it works!)

Answer 1

Reading the render tags documentation I believe it may be possible to do this in a nicer way

So getting the list Element using this

Context:CurrentPage.Elements.GetElement(lst_myPages).Value

The Value property should return a page collection for list items so you should be able to do

Context:CurrentPage.Elements.GetElement(lst_myPages).Value.Count

Answer 2

<!IoRangePreExecute>
  <% lst_myPagesSize = 0 %>

  <!IoRangeList>
    <% lst_myPagesSize = lst_myPagesSize + 1%>
    <!IoRangeRedDotMode><!--[if !IE]><%lst_myPages%><![endif]--><!/IoRangeRedDotMode>  
  <!/IoRangeList>

<!/IoRangePreExecute>

I think this is the fastest way. First counter = 0. Then in the list range increment the counter (keep in mind to include the list place-holder too in that block). After that you have the value in the counter.

Answer 3

Apparently, the only way to do this is to loop through the list, counting each item, e.g.

<reddot:cms>
<foreach itemname="testList"
         object="Context:CurrentPage.Elements.GetElement(lst_myPages).Value"
         countername="listCounter">
</foreach>
</reddot:cms>

The length is then available as:

<%!! Store:listCounter !!%>

Answer 4

In OpenText use this render tag to get the length of a list (name of list element: lst_Navigation):

<%!! Context:CurrentPage.GetElementByName(lst_Navigation).GetLinkedContents().Count !!%>

Context/RDObj: by ObjectLoader Context (alias: RDObj) you get access to objects of Management Server

CurrentPage: returns Page objekt from current page

GetElementByName: method from page object to get a page element by name

GetLinkedContents: returns a LinkList object

Count: returns the number of LinkList elements