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Dealing with empty node

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steelej

04 Apr, 2014 04:35 PM

In the attached page, I want to display items for Related Documents at the end only when values are entered. I tried #if ($docs.size() > "0") but can't get it to work. If it were working, I don't think it would be the right choice for the way I have this set up as the $docs.size() comes up as 1 when there is no entry.

• script.txt 3.3 KB
• page.xml 6.5 KB

1. 1 Posted by steelej on 04 Apr, 2014 06:02 PM

   

   This is not urgent. I would be curious as to the proper way to do this. I thought on it a while and achieved what I wanted by checking the first item under docs for text (which all items would have to have). I used that for my conditional: #if ($dochk.trim() != "")

   It works.

   • Edit

2. 2 Posted by Ryan Griffith on 04 Apr, 2014 06:49 PM

   

   Hi Jim,

   Have you tried using #if ($docs.size() > 0) by chance? Note that the size() method returns an integer and not a string.

   I noticed that the doc items are composed of two asset choosers. You could try using the XPath Tool to filter out items that have a value or a chosen asset and then check for the size of the filtered items. For example:

   #set ($docs = $_XPathTool.selectNodes($dd, "docs/item[localfile/path != '/' or localpage/path != '/']"))
   #if ($docs.size() > 0)
       ... Code here ...
   #end
   

   Please let me know if you have any questions.

   Thanks!

   • Edit

3. 3 Posted by Ryan Griffith on 08 Apr, 2014 05:53 PM

   

   Hi Jim,

   Just wanted to follow up to see if you had a chance to view my recent comment. Were you able to get your Velocity code working?

   Please let us know if you have any questions.

   Thanks.

   • Edit

4. steelej closed this discussion on 09 Apr, 2014 01:12 PM.