How to add global authorize attribute to asp net core 6 mvc

Introduction

ASP.NET is a popular language used for building web applications. One common requirement in web development is to add authorization to certain of the . In ASP.NET Core 6 MVC, you can easily add a global authorize attribute to enforce authorization across the entire application.

Step 1: Create a Custom Authorization Attribute

To add a global authorize attribute, we first need to create a custom authorization attribute. This attribute will be applied to all and actions in the application.


using .AspNetCore.Mvc.Filters;

public class GlobalAuthorizeAttribute : IAuthorizationFilter
{
    public void OnAuthorization(AuthorizationFilterContext )
    {
        // Add your authorization logic here
    }
}

In the above code, we define a class named GlobalAuthorizeAttribute that implements the IAuthorizationFilter interface. The OnAuthorization method is where you can add your custom authorization logic.

Step 2: Register the Custom Authorization Attribute

Once we have our custom authorization attribute, we need to register it in the ASP.NET Core 6 MVC application. This can be done in the method of the Startup class.


public void ConfigureServices(IServiceCollection services)
{
    services.AddControllersWithViews(options =>
    {
        options.Filters.Add(typeof(GlobalAuthorizeAttribute));
    });
}

In the above code, we use the AddControllersWithViews method to register our custom authorization attribute. We pass the attribute type GlobalAuthorizeAttribute to the Add method of the Filters property of the options parameter.

Step 3: Implement Authorization Logic

Now that we have registered our custom authorization attribute, we can implement the authorization logic in the OnAuthorization method of the GlobalAuthorizeAttribute class.


public class GlobalAuthorizeAttribute : IAuthorizationFilter
{
    public void OnAuthorization(AuthorizationFilterContext context)
    {
        // Implement your authorization logic here
        if (!context.HttpContext.User.Identity.)
        {
            // Redirect to  page or  unauthorized response
        }
    }
}

In the above code, we check if the user is authenticated using the IsAuthenticated property of the Identity property of the User property of the HttpContext. If the user is not authenticated, you can redirect them to the login page or return an unauthorized response.

Conclusion

By following the above steps, you can easily add a global authorize attribute to your ASP.NET Core 6 MVC application. This attribute will enforce authorization across all controllers and actions, ensuring that only authenticated users can access the protected parts of your application.

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