REST API: Get ID of current node's category

That's very odd - it should be fine when called from the context of a board. What error are you getting? Please keep in mind that ancestors is an array so you would need to look into the array elements to find out the information around the node's ancestors.

 

For example:

${coreNode.ancestors[0].id}

 Would return the id of the first ancestor.

Here are a couple more examples of working with coreNode.ancestors that might give you some ideas:

http://lithosphere.lithium.com/t5/developers-discussion/Retrieve-Title-Name-from-Ancestor/m-p/30135/highlight/true#M3458

http://lithosphere.lithium.com/t5/developers-discussion/How-To-Create-a-Category-Based-Navigation-Like-Lithosphere/m-p/34261/highlight/true#M514

I think you would need to make a custom component and get the category id using ${coreNode.ancestors[0].id}, then get the boards from this category using rest api (/restapi/vc/categories/id/${coreNode.ancestors[0].id}) and parse the response to get all boards.

You would surely need to eliminate the board which are currently on, this can be done using some freemarker logic.

Thanks