Question

I have a Filter and a Filter Provider set in that way:

public class AuditoriaFilter : IActionFilter
{
    #region Fields

    private readonly IRegistrarAuditoriaService _registrarAuditoriaService;

    private readonly IUsuarioRepository _usuarioRepository;

    private readonly ISiteRepository _siteRepository;

    private readonly IModuloRepository _moduloRepository;

    private readonly IAtividadeRepository _atividadeRepository;

    #endregion

    #region Constructors

    public AuditoriaFilter(IRegistrarAuditoriaService registrarAuditoriaService, IUsuarioRepository usuarioRepository, ISiteRepository siteRepository, IModuloRepository moduloRepository, IAtividadeRepository atividadeRepository)
    {
        this._registrarAuditoriaService = registrarAuditoriaService;
        this._usuarioRepository = usuarioRepository;
        this._siteRepository = siteRepository;
        this._moduloRepository = moduloRepository;
        this._atividadeRepository = atividadeRepository;
    }

    #endregion

    public void OnActionExecuted(ActionExecutedContext context)
    {
        Usuario usuario = _usuarioRepository.GetById(1);

        Site site = _siteRepository.GetById(1);

        Modulo modulo = _moduloRepository.GetById(1);

        Atividade atividade = _atividadeRepository.GetById(1);

        _registrarAuditoriaService.Registrar(usuario, site, modulo, atividade);
    }

    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
    }
}

Filter Provider:

public class AuditoriaFilterProvider : IFilterProvider
{
    #region Fields

    private readonly IRegistrarAuditoriaService _registrarAuditoriaService;

    private readonly IUsuarioRepository _usuarioRepository;

    private readonly ISiteRepository _siteRepository;

    private readonly IModuloRepository _moduloRepository;

    private readonly IAtividadeRepository _atividadeRepository;

    #endregion

    #region Constructors

    public AuditoriaFilterProvider(IRegistrarAuditoriaService registrarAuditoriaService, IUsuarioRepository usuarioRepository, ISiteRepository siteRepository, IModuloRepository moduloRepository, IAtividadeRepository atividadeRepository)
    {
        this._registrarAuditoriaService = registrarAuditoriaService;
        this._usuarioRepository = usuarioRepository;
        this._siteRepository = siteRepository;
        this._moduloRepository = moduloRepository;
        this._atividadeRepository = atividadeRepository;
    }

    #endregion

    public IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
    {
        bool postHttpMethod = controllerContext.RequestContext.HttpContext.Request.HttpMethod.ToUpper() == "POST";
        string controllerName = actionDescriptor.ControllerDescriptor.ControllerName;

        if (postHttpMethod && controllerName != "Login")
            yield return new Filter(new AuditoriaFilter(_registrarAuditoriaService, _usuarioRepository, _siteRepository, _moduloRepository, _atividadeRepository), FilterScope.Action, null);

        yield break;
    }
}

Global.asax:

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
    AuditoriaFilterProvider auditoriaFilterProvider = new AuditoriaFilterProvider(DependencyResolver.Get<IRegistrarAuditoriaService>(), DependencyResolver.Get<IUsuarioRepository>(), DependencyResolver.Get<ISiteRepository>(), DependencyResolver.Get<IModuloRepository>(), DependencyResolver.Get<IAtividadeRepository>());

    FilterProviders.Providers.Add(auditoriaFilterProvider);
}

All my Ninject settings are the same way and are ok, only the DbContext is different: it is InRequestScope():

public override void Load()
{
    Bind<IDbContext>().To<DbContext>().InRequestScope().WithConstructorArgument("connectionString", ConfigurationManager.AppSettings["DefaultConnectionString"]);
}

If I put the DbContext in InSingletonScope() all works ok, but DbContext can not stay in SingletonScope, it must to be in RequestScope.

All controllers which depends on DbContext works fine when DbContext is InRequestScope, but when is time to .Net use the Filter it works only on the first Request, on the second request a exception is throw: “The operation cannot be completed because DbContext the has been disposed.”

Answer 1

Filter Providers aren’t created for every request and therefore aren’t allowed to get any dependency in request scope.

Use https://github.com/ninject/ninject.web.mvc/wiki/Dependency-injection-for-filters instead.