Adding a custom data-attribute to a field in Views In a view I need to add a custom data-attribute to the row output (just like classes are added). Simply rewriting the output doesn't work because XSS attribute filtering strips the attribute.
How can I accomplish this in a reasonable way?
These answers are for D7 and do not quite cover dynamic output:

Custom attribute in views fields

How to add data attributes to view list &lt;li&gt; tags?
To summarize for future reference: 

You can add data attributes using Rewrite in Views Fields.

If you added a custom data-attribute but something isn't working, the problem might be in the value ;) 



What gets stripped by the filter_xss_admin() on Rewrite is most notably the &lt;object&gt; tag and style="" attribute because users can submit malicious code through those. 

It seems Views for D7 will have that check removed in the next release: Remove filter_xss_admin() from result rewriting because views editors are already trusted admins