Hi David

Have you considered using an IValidator<T>? 

David

I was going to answer the same about IValidator of T, but would be great to have more human friendly UI -> that dropping is enabled only for allowed blocks. this might involve spelling some dojo magika..

Hi guys,

Yes sorry I should've expanded on my question really.. was more wondering whether there were a way to remove the "Create a new block" option within the content area - and hence restricting it down to only allow shared blocks essentially. 

Thanks

Hi David.

Other Episerver friends of ours has done something you'll find useful.

Try and have a look here:

https://world.episerver.com/forum/developer-forum/-Episerver-75-CMS/Thread-Container/2014/9/Disable-create-new-block-for-content-area/

Please note; it does not mean editor simply can't create a new block through the Asset pane, under "For This Page". 

/Casper Aagaard Rasmussen

Yes you could do something like this

[AllowedTypes(new []{ typeof(XBlock), typeof(YBlock)})]
 public virtual ContentArea MainContentArea { get; set; }

or

solution is to add an interface to the block:

public class SliderBlock : INotAvailableContent {}

The interface and descriptor:

public interface INotAvailableContent { }

[UIDescriptorRegistration]
public class NotAvailableContentDescriptor : UIDescriptor<INotAvailableContent> { }

The ContentArea defintion:

[AllowedTypes(RestrictedTypes = new[] { typeof(INotAvailableContent) })]
public virtual ContentArea MainContentArea { get; set; }

Now you can easy add INotAvailableContent for ContentAreas and blocks to avoid them.

Hey David

This may be exactly what you are looking for:

https://gregwiechec.com/2016/05/how-to-disable-creating-new-blocks-in-content-area/

David