Case sensitive filesystems and Razor view searches

[callumj]

Title

When using a case sensitive file system the Razor View Engine will be unable to find the controller's view folder unless the path matches case in the directory structure.

Functional impact

Marginal, just requires that developers ensure the use of controller names in paths matches the same case as the directory structure.

Minimal repro steps

1. Deploy a MVC application on a case sensitive file system (Mono on Linux) Example app used: https://github.com/callumj/vnext-mvc-sample
2. Create a controller with a view such as HomeController#Create, this should have a view Home/Create.cshtml
3. Navigate to /home/Create
4. MVC will be unable to locate Home/Create.cshtml because it has been told to try home/Create.cshtml.

Expected result

It should locate the view irregardless of the case.

Actual result

View not found

[pranavkm]

👍 We were discussing this earlier today. We use the Route dictionary in the ViewEngine to locate components. Instead we should rely on the ActionDescriptor to provide us values for Controller and Area.

[callumj]

That sounds like a good solution, especially as it places a tighter binding between the Controller and the View engine with the Action able to dictate what View will be used (as opposed to it being inferred by the route).

[yishaigalatzer]

We should consider the following things as well when fixing this:

1. Controller
2. Action
3. Area
4. View Expander sample

[ThatRendle]

This is not "marginal", it's literally the first thing I ran into working under Linux and it's really annoying. I lost an hour chasing it down.