how can i identify data type of blocklistmodel in code - Using Umbraco and getting started

Press Ctrl / CMD + C to copy this to your clipboard.

Copied to clipboard

Flag this post as spam?

This post will be reported to the moderators as potential spam to be looked at

Kasper 13 posts 84 karma points

Mar 09, 2022 @ 09:59
0

How can I identify data type of BlocklistModel in code?
Is there any way to check the underlying datatype of a blocklist in code? Let's say I have created a blocklist data type and called it fooBlocklist and another one called barBlocklist and added a property to a document type which uses the fooBlocklist.

When accessing this property in code, I get a BlockListModel, and I can loop through the BlockListItems in the block, but is there any way to determine if the BlockListModel is using the barBlocklist or the fooBlocklist?

Something like this in pseudo:
```
if (model.myBlockListProperty is BlockListModel<fooBlockList>)
{
    //do stuff
}
```
So far, my best approach has been to check if all blockitems inside the BlockListModel are of a certain type, because I know I only have one blocklist with this specific configuration of blocks, but this approach doesn't work if the blocklist is empty.
Copy Link
Ambert van Unen 175 posts 819 karma points c-trib

Mar 10, 2022 @ 22:25
0
but this approach doesn't work if the blocklist is empty.

You could easily add a
```
if (myBlockList.Any()) 
```
To check if there are any items ofcourse ;-)

I've been trying this myself aswell, and I think it's not directly possible like you want it. It's probably also the reason Umbraco provides the demo with rendering the items in the blocklist as seperate components:
```
@if (Model?.Any() == true)
{
     foreach (var block in Model)
     {
         if (block?.ContentUdi == null) { continue; }
         @(await Component.InvokeAsync(block.Content.ContentType.Alias, block))
     }
 }
```
This way you avoid the issue entirely, and always render a component with the correct model.

However! You could do exactly as Umbraco does but in a switch/case for example:
```
switch (blockListItem.Content.ContentType.Alias)
        {
            case LinkItemElement.ModelTypeAlias
                : // do this
            default:
                // else default do this
            break;
        }
```
Copy Link
is working on a reply...

Please Sign in or register to post replies

Flag this post as spam?

How can I identify data type of BlocklistModel in code?