call functions from with ejs templates on node

I am trying to create a non-javascript version of my web app using ejs on the server side. I pass into the template an object containing the app's state, and at one point I want to build a url using that state object. So basically I want to do something like <%=makeUrl(objectState.data[0])%>

how can I make makeUrl callable from within ejs templates?

Thanks

edit: I know I can pass a function in as a parameter to the template, but is there a better way?