> If you don't have page-specific (or any, if you can) code on the client side, this stops being a problem in the first place.
Sure and that's a valid use case for server rendering. Though even in that situation having a typed mechanism for going from a model and view to HTML wins out over untyped templates that operate primarily on string replacement. You have the same problem server side when "first_name" in your model is renamed to "display_name".
Unless you have tests that lead to rendering every possible if/else branch in your rendering logic, you're not going to realize that you forgot to update your view template until that situation happens in production. The more complicated your views, the more likely you'll run into this situation.
> It's funny how SPA fans here claim both good separation of concerns via web services and code/type sharing as features while in practice those things are mutually exclusive.
I'm not sold on SPA either but for any application that involves an active client that makes it's own requests and maintains state, you end up needing some form of documentation for those interactions. It's not a panacea but well defined interfaces shared between the server and client solve a big part of that.
Sure and that's a valid use case for server rendering. Though even in that situation having a typed mechanism for going from a model and view to HTML wins out over untyped templates that operate primarily on string replacement. You have the same problem server side when "first_name" in your model is renamed to "display_name".
Unless you have tests that lead to rendering every possible if/else branch in your rendering logic, you're not going to realize that you forgot to update your view template until that situation happens in production. The more complicated your views, the more likely you'll run into this situation.
> It's funny how SPA fans here claim both good separation of concerns via web services and code/type sharing as features while in practice those things are mutually exclusive.
I'm not sold on SPA either but for any application that involves an active client that makes it's own requests and maintains state, you end up needing some form of documentation for those interactions. It's not a panacea but well defined interfaces shared between the server and client solve a big part of that.