Substantive.AspNetCore.Mvc

Internal ASP.NET Core MVC building blocks for Substantive applications. This library targets net10.0 and is intended for use in MVC and Razor Pages apps.

Features

• Claims-based model binding via FromClaimAttribute and ClaimsValueProvider.
• Property-based model binding via FromPropertyAttribute and PropertyValueProvider (intended for customization in downstream apps).
• ModelStateFeatureFilter to capture ModelState in HttpContext.Features for later middleware access.

Usage

Register the value providers and filter during MVC/Razor Pages configuration:

using Substantive.AspNetCore.Mvc;

var builder = WebApplication.CreateBuilder(args);

builder.Services
    .AddRazorPages()
    .AddMvcOptions(options =>
    {
        options.AddClaimsValueProvider();
        options.AddPropertyValueProvider();
        options.Filters.Add<ModelStateFeatureFilter>();
    });

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

Bind values from claims or custom property sources:

public IActionResult OnGet([FromClaim("sub")] string subject)
{
    // subject is resolved from HttpContext.User claims
    return Page();
}

Notes

• Ensure authentication populates HttpContext.User claims before using FromClaimAttribute.
• PropertyValueProvider is a customization point for model binding from non-request sources.