Update user action filter

Create an action filter to apply to all the actions of UserController that updates the LastActive property of the current user.

Create the action filter

Create a class that implements IAsyncActionFilter.

The class is in a new folder Controllers/Filters/LogUserActivity.cs. The position of the class is not relevant but I like to keep the filters near the controllers.

The generic GetService call requires using Microsoft.Extensions.DependencyInjection; and vscode auto import doesn’t work.

using System;
using System.Security.Claims;
using System.Threading.Tasks;
using DatingApp.API.Data;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.Extensions.DependencyInjection;

namespace DatingApp.API.Controllers.Filters
    public class LogUserActivity : IAsyncActionFilter
        public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
            var actionExecutedContext = await next();

            int userId = int.Parse(actionExecutedContext.HttpContext.User.FindFirst(ClaimTypes.NameIdentifier).Value);
            var repo = actionExecutedContext.HttpContext.RequestServices.GetService<IDatingRepository>();

            var currentUser = await repo.GetUser(userId);

            currentUser.LastActive = DateTime.UtcNow;

            await repo.SaveAll();

Registration and usage

Register the filter in Startup.ConfigureServices as a ServiceFilter for Dependency Injection


Add the filter at the class level in UserController so that all the actions will call the filter.

public class UsersController : Controller