Extending treelist having issues with token resolver

Question

I am following this article to extend treelist field - https://jammykam.wordpress.com/2016/01/06/specifying-query-and-parameters-for-sitecore-treelist-field-source/.

We want to have a treelist field with support of query and other datasource parameters. But adding a query with token is causing issue. This query is working - datasource=query:$site/Data/Topic Whereas this is not - datasource=query:$sharedSites/Data/Topic

This is because $sharedSites token is getting converted to lowercase and its not getting resolved. Do we have any way of handling this with modifying the query?

Answer 1

looking at this it is because in the treelist SetProperties it sets the Datasource to LowerInvariant

Something like this should work

private string CasedDataSource => StringUtil.ExtractParameter("DataSource", this.Source).Trim();

and use that for all additional logic