Multi-tenant URL with razor pages

Question

Hi everyone,
I'm developing a project with multi-tenant razorpages.
To set the various urls in this format "/{tenant}/index"
I wrote this in program.cs:

// Add services to the container.

Now if I write the url containing the tenant (for example /tenant1/index) it works correctly,
but when starting the project I get a 404 (because the startup url is "/").

How do I view a page if there is no tenant?
Then for each project url I am forced to write this:
asp-route-slug="@Context.Request.RouteValues["slug"]"

Is there a better way to not pass the slug parameter?

Answer 1

Hi,@Salvatore Sanollo You may try :

builder.Services.AddRazorPages()
     .AddRazorPagesOptions(options =>
     {
         options.Conventions.AddFolderRouteModelConvention("/", model =>
         {
             model.Selectors.Remove(model.Selectors.FirstOrDefault(x => x.AttributeRouteModel.Template == ""));
             foreach (var selector in model.Selectors)
             {
                 if (!selector.AttributeRouteModel.Template.Contains("welcome"))
                 {
                     selector.AttributeRouteModel = new AttributeRouteModel
                     {
                         Order = -1,
                         Template = AttributeRouteModel.CombineTemplates(
                         "{slug}",
                         selector.AttributeRouteModel.Template),
                     };
                 }                 
             }
             
         });
     });
.....

var app = builder.Build();
......


app.MapFallbackToPage("/welcome");

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Answer 2

How do I display a specific page if there is no tenant? With your code the application starts but points to the webapp page. I would like to display a welcome page