It fails for razor pages. Please check my fork that supports both razor pages and views.

Routes.cshtml

Routes.cshtml.cs

I tried to drop in these files to my 'Pages' folder. However, when I attempted to start my application it's giving me the following errors. I'm using a standard .NET Core 2.0 MVC Web App template and not the Pages one. I made sure PreserveCompiliationContext was set to true. Is there something else I need to change to get this working?

An error occurred during the compilation of a resource required to process this request. Please review the following specific error details and modify your source code appropriately.
Generated Code
One or more compilation references are missing. Ensure that your project is referencing 'Microsoft.NET.Sdk.Web' and the 'PreserveCompilationContext' property is not set to false.

The type or namespace name 'RoutesModel' could not be found (are you missing a using directive or an assembly reference?)
+
public global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper Html { get; private set; }
The type or namespace name 'RoutesModel' could not be found (are you missing a using directive or an assembly reference?)
+
public global::Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary ViewData => (global::Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary)PageContext?.ViewData;
The type or namespace name 'RoutesModel' could not be found (are you missing a using directive or an assembly reference?)
+
public RoutesModel Model => ViewData.Model;
The type or namespace name 'RoutesModel' could not be found (are you missing a using directive or an assembly reference?)
+
public global::Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary ViewData => (global::Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary)PageContext?.ViewData;

Even if I have x.ActionConstraints this gives me empty list

Plus type for parameter should be DateTime, not nullable