View not found in a .net 5 web mvc application using the mvc sample plugin

[davidbuckleyni]

I am using .net 5 web site mvc to build a wms system with plugins and I am using your plugin for that abilties to make it easier to consume the plugins however the view is just not being hit.

This is my full startup.css I have also created a directory called plugins and made sure it copied to the bin directory. One thing I did was test with the sample you had so I copied MvcAppPlugin1 and copied it to my bin \ plugins directory, However when I look at the goto the MyPlugin action ie localhost/MyPlugin nothing is display i logged into my system as it uses authorisation so i no nothing is going wrong that way.

I noticed when I compiled the app it created to binaries should the view be embbed so it doesnt produce the second dll.

public class Startup {
        private string _crmAPiKey = null;
        private string extensionsPath;

        public Startup(IWebHostEnvironment webHostEnvironment, IConfiguration configuration) {
            Configuration = configuration;
            this.extensionsPath = webHostEnvironment.ContentRootPath + configuration["Extensions:Path"];

        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services) {
            services.AddLocalization(options => options.ResourcesPath = "Resources");
            _crmAPiKey = Configuration["CrmApiKey:ServiceApiKey"];

            services.AddSingleton<LocalizationService>();

            services.AddDbContext<WarehouseDBContext>
        (options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")), ServiceLifetime.Transient);
            services.AddRepository();

            services.AddIdentity<ApplicationUser, IdentityRole>(config => {
                config.SignIn.RequireConfirmedEmail = true;
                config.Tokens.AuthenticatorTokenProvider = TokenOptions.DefaultAuthenticatorProvider;
                config.User.RequireUniqueEmail = true;

            })
            .AddDefaultUI()

           .AddRoles<IdentityRole>()
           .AddDefaultTokenProviders()
           .AddEntityFrameworkStores<WarehouseDBContext>();
                services.AddControllersWithViews()
            .AddDataAnnotationsLocalization();
            services.Configure<CookiePolicyOptions>(options => {
                options.CheckConsentNeeded = context => true; // consent required
                options.MinimumSameSitePolicy = SameSiteMode.None;
            });
            services.AddSession(opts => {
                opts.Cookie.IsEssential = true; // make the session cookie Essential
            });

            services.AddRazorPages()
            .AddSessionStateTempDataProvider();

            services.AddMvc().AddNToastNotifyToastr(new ToastrOptions() {
                ProgressBar = false,
                PositionClass = ToastPositions.TopRight,
                ToastClass = "alert",

            });

            services.Configure<RequestLocalizationOptions>(options => {
                var supportedCultures = new[]
                {
                    new CultureInfo("en-US"),
                    new CultureInfo("en-GB"),
                    new CultureInfo("es"),
                    new CultureInfo("fr")
                    };

                options.DefaultRequestCulture = new RequestCulture(culture: "en-GB", uiCulture: "en-GB");
                options.SupportedCultures = supportedCultures;
                options.SupportedUICultures = supportedCultures;
                options.RequestCultureProviders = new List<IRequestCultureProvider>
        {
              new QueryStringRequestCultureProvider(),
              new CookieRequestCultureProvider()
              };
            }).AddControllersWithViews()

                .AddViewLocalization(LanguageViewLocationExpanderFormat.SubFolder)
    .AddViewLocalization(options => options.ResourcesPath = "Resources")
                .AddDataAnnotationsLocalization(options => {
                    options.DataAnnotationLocalizerProvider = (type, factory) => {
                        var assemblyName = new AssemblyName(typeof(SharedResource).GetTypeInfo().Assembly.FullName);
                        return factory.Create("SharedResource", assemblyName.Name);
                    };
                });

            services.AddControllers(config => {
                // using Microsoft.AspNetCore.Mvc.Authorization;
                // using Microsoft.AspNetCore.Authorization;
                var policy = new AuthorizationPolicyBuilder()
                                 .RequireAuthenticatedUser()
                                 .Build();
                config.Filters.Add(new AuthorizeFilter(policy));
            });

            services.Configure<IdentityOptions>(options => {

                // Default Lockout settings.
                options.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(5);
                options.Lockout.MaxFailedAccessAttempts = 5;
                options.Lockout.AllowedForNewUsers = true;

            });
            services.ConfigureApplicationCookie(config => {
                config.Cookie.Name = "Identity.Cookie";
                config.LoginPath = "/Identity/Account/Login/";
            });
            //services.AddTransient<MISDBContextSeedData>();
            services.AddSingleton<ISharedResource, SharedResource>();
            // using WebPWrecover.Services;
            services.AddTransient<IEmailSender, EmailSender>();

            services.Configure<AuthMessageSenderOptions>(Configuration);

            services.AddAutoMapper
(typeof(AutoMapperProfile).Assembly);

            services.AddAuthorization(options =>
      options.AddPolicy("TwoFactorEnabled",
          x => x.RequireClaim("amr", "mfa")));
            services.AddAntiforgery(o => o.HeaderName = "XSRF-TOKEN");
            var mvcBuilder = services
         .AddMvc()
         .SetCompatibilityVersion(CompatibilityVersion.Version_3_0);

            foreach (var dir in Directory.GetDirectories(Path.Combine(AppContext.BaseDirectory, "plugins")))
            {
                var pluginFile = Path.Combine(dir, Path.GetFileName(dir) + ".dll");
                // The AddPluginFromAssemblyFile method comes from McMaster.NETCore.Plugins.Mvc
                mvcBuilder.AddPluginFromAssemblyFile(pluginFile);
            }
            services.AddAuthentication(options => {
                options.DefaultAuthenticateScheme = IdentityConstants.ApplicationScheme;
                options.DefaultChallengeScheme = IdentityConstants.ApplicationScheme;
                options.DefaultSignInScheme = IdentityConstants.ExternalScheme;
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env) {
            var locOptions = app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>();
            app.UseRequestLocalization(locOptions.Value);

   //         seeder.SeedAdminUser();//this is my super user account do not over write
     //       seeder.SeedUser1();
       //     seeder.SeedUser2();
         //   seeder.SeedUserManager();

            var supportedCultures = new[]
            {
        new CultureInfo("en-US"),
        new CultureInfo("en-GB"),
        new CultureInfo("es"),
        new CultureInfo("fr")
        };
            app.UseRequestLocalization(new RequestLocalizationOptions() {
                DefaultRequestCulture = new RequestCulture("en-GB"),
                SupportedCultures = supportedCultures,
                SupportedUICultures = supportedCultures
            });
            if (env.IsDevelopment()) {
                app.UseDeveloperExceptionPage(new DeveloperExceptionPageOptions() { SourceCodeLineCount = 30 });
                app.UseDatabaseErrorPage();
            } else {
                //    app.UseExceptionHandler("/Home/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }
             app.UseCookiePolicy();

            app.UseNToastNotify();

            app.UseSession();
            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseRouting();
            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints => {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");
                endpoints.MapRazorPages();
            });

        }
    }

[natemcmaster]

I'm not sure what's wrong. Perhaps something changed in .NET 5. Marking as help-wanted. If someone can identify the root cause and propose a fix, I'd appreciate the help.

[GiampaoloGabba]

The only way i found to use views for a MVC plugin in .NET5 is:

1. Reference Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation in the main project: <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="5.0.1" />

2. Use .AddRazorRuntimeCompilation() in the mvcBuilder:

   var mvcBuilder = services.AddControllersWithViews()
                          .AddRazorRuntimeCompilation();

3. Use .AddRazorOptions to add my custom path for resolving views:

   foreach (var dir in Directory.GetDirectories(_extensionsPath))
   {
   var pluginFile = Path.Combine(dir, Path.GetFileName(dir) + ".dll");
   mvcBuilder.AddPluginFromAssemblyFile(pluginFile);
   
   mvcBuilder.AddRazorOptions(o =>
   {
       o.ViewLocationFormats.Add("/Plugins/" + new DirectoryInfo(dir).Name + "/Views/{1}/{0}.cshtml");
       o.ViewLocationFormats.Add("/Plugins/" + new DirectoryInfo(dir).Name + "/Views/Shared/{0}.cshtml");
   });
   }

4. Configure the plugin project to copy your views in the outputpath:

   <ItemGroup>
   <Content Include="Views\**\*.cshtml">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
   </Content>
   </ItemGroup>

With these steps, you also have full access to views, components, PartialViews, ecc... from the plugin in your main project, for example:

@await Html.PartialAsync($"~/Plugins/PluginName/Views/Shared/view.cshtml"

[aloksharma1]

@GiampaoloGabba can you make a sample repo, i tried this but its not working for me... weirdly i dont need it for a single plugin host application but all other plugins view are called then i get this error InvalidOperationException: Cannot find compilation library location for package 'System.LoginModule' which is the first module, it does hits the desired view on debug but afterwards breaking like this... any suggestion?

[davidbuckleyni]

I already closed this

[aloksharma1]

@davidbuckleyni were you able to solve it?

[davidbuckleyni]

@davidbuckleyni were you able to solve it?

I actually ended up downloaded the code for SimplComerce it highlights allot of code that is missing from this example.

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[github-actions[bot]]

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