How to check the size of list in sightly?

We can create a variable like this if list size is small, e.g. total is a variable created here which can be used further where ever size is required we can use this total object

<sly data-sly-list.listObj="${object.mylist}">
          <sly data-sly-test="${listObjList.last}">
            <sly data-sly-test.total="${listObjList.count}" />
      </sly>
</sly>

for example if I need to test if size is 2. We can use statement like 

data-sly-test="${total>2}"

Use: ${myWCMUseObject.allColumns.size}

// The WCMUse class' method that gives me an ArrayList

public List<String> getAllColumns() {

  List<String> allColumns = new ArrayList<String>();

  for (int i = 1; i <= 10; i++) {

    allColumns.add("Test" + "-" + i);

  }

  return allColumns;

  }

  # sightly code that I am trying out ....

<sly data-sly-list.myList="${myWCMUseObject.allColumns}">

  <div data-sly-test="${myList.size > 5}" data-sly-unwrap>

  Heloo!!!!!

        </div>

</sly>

Can you share a snippet of your code?

It is an ArrayList object

What is myList for kind of object?

Hi Felke.

On trying the snippet as below:

    <div data-sly-test="${myList.size > 5}" data-sly-unwrap>

  Heloo!!!!!

        </div>

We get an error as:

Invalid types in comparison. Comparison is supported for Number types only.

Could you please throw some light on why this could be the case?

Thanks,

Hemant Bellani

I also find it very helpful to use the Ternary Operator in conjunction with the size/length to optionally add classes to an element. Just another front-end tip.

<div class="image-grid-item ${(properties['imageTiles'].length > 3 && rowList.count == 3 ) ? 'image-grid-item_bigger' : ''}"> </div>

It indeed depends what kinds of object you are using for the list object.

This answer is no longer valid. As far as I can tell, the only way to accomplish this is to create another method in the initialized bean that returns the size of the list.