RenderItemList check if results exist from the paragraph template

Igor Ivanov

Posted on 07/09/2023 14:58:49

Developing a custom Swift_ArticleList template I noticed a problem that will come up again and again in the future.

The architecture is that the paragraph template is building the container for the paragraph, this could be a slider for example. It then calls the Dynamicweb.Rendering.RenderItemList method inside this template and passes the necessary settings.

This is what is rendered if the item publisher fails to locate items

Inside the ItemPublisher/List/List.cshtml template that is used I can see this line GetBoolean("ItemPublisher:Items.Any");

How do we check if ItemPublisher has returned any items before we render the paragraph, before calling RenderItemList() ?

This is important, because we want to be able to hide the paragraph or show our own message if no results are found

Replies

Nicolai Pedersen

Posted on 07/09/2023 15:02:31

RenderItemList is basically just a function that you can call and store in a variable:

Something like this:

var myItems = RenderItemList(new { .. });
if(myItems.length>0){
@myItems
}

Length might be a bad option here as it can be a couple of characters long - but you get the point.

BR Nicolai

Igor Ivanov

Posted on 07/09/2023 15:22:24

While this works

if(!myItems.ToString().Contains("No items found")){
@myItems
}

Surely there is a more elegant solution to this ?

You must be logged in to post in the forum

Developer forum

RenderItemList check if results exist from the paragraph template

Replies