Update the Fornax and Mortis samples to register ApplicationDbContext in the DI container

Author: kevinchalet

samples/Fornax/Fornax.Server/Global.asax.cs

@@ -75,6 +75,9 @@ void Application_Start(object sender, EventArgs e)
                 options.UseOwin();
             });
 
+        // Register the Entity Framework context needed by the OpenIddict stores.
+        services.AddScoped(static provider => ApplicationDbContext.Create());
+
         // Create a new Autofac container and import the OpenIddict services.
         var builder = new ContainerBuilder();
         builder.Populate(services);

samples/Fornax/Fornax.Server/Startup.cs

@@ -1,4 +1,5 @@
-using Fornax.Server.Models;
+using Autofac;
+using Fornax.Server.Models;
 using Microsoft.AspNet.Identity;
 using Microsoft.AspNet.Identity.Owin;
 using Microsoft.Owin;
@@ -16,7 +17,16 @@ public class Startup
     public void Configuration(IAppBuilder app)
     {
         // Register the Entity Framework context and the user/sign-in managers used by ASP.NET Identity.
-        app.CreatePerOwinContext(ApplicationDbContext.Create);
+        //
+        // Note: while the regular CreatePerOwinContext() method is used to store the Entity Framework
+        // context in the OWIN environment (so that it can be retrieved by the ASP.NET Identity components),
+        // the factory used here simply resolves the scoped context from the Autofac container to avoid
+        // having multiple instances of the same context created for each request. As such, the dispose
+        // callback action is left empty, as the context will be disposed by Autofac when the request ends.
+        app.CreatePerOwinContext<ApplicationDbContext>(
+            createCallback: static (options, context) => Global.Provider.ApplicationContainer.Resolve<ApplicationDbContext>(),
+            disposeCallback: static (options, context) => { });
+
         app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
         app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
 

samples/Mortis/Mortis.Client/Models/ApplicationDbContext.cs

@@ -9,6 +9,11 @@ public ApplicationDbContext()
     {
     }
 
+    public static ApplicationDbContext Create()
+    {
+        return new ApplicationDbContext();
+    }
+
     protected override void OnModelCreating(DbModelBuilder modelBuilder)
     {
         modelBuilder.UseOpenIddict();

samples/Mortis/Mortis.Client/Startup.cs

@@ -78,6 +78,9 @@ public void Configuration(IAppBuilder app)
                 });
             });
 
+        // Register the Entity Framework context needed by the OpenIddict stores.
+        services.AddScoped(static provider => ApplicationDbContext.Create());
+
         // Create a new Autofac container and import the OpenIddict services.
         var builder = new ContainerBuilder();
         builder.Populate(services);

samples/Mortis/Mortis.Server/Startup.cs

@@ -72,6 +72,9 @@ public void Configuration(IAppBuilder app)
                 options.UseOwin();
             });
 
+        // Register the Entity Framework context needed by the OpenIddict stores.
+        services.AddScoped(static provider => ApplicationDbContext.Create());
+
         // Create a new Autofac container and import the OpenIddict services.
         var builder = new ContainerBuilder();
         builder.Populate(services);
@@ -85,7 +88,16 @@ public void Configuration(IAppBuilder app)
         var container = builder.Build();
 
         // Register the Entity Framework context and the user/sign-in managers used by ASP.NET Identity.
-        app.CreatePerOwinContext(ApplicationDbContext.Create);
+        //
+        // Note: while the regular CreatePerOwinContext() method is used to store the Entity Framework
+        // context in the OWIN environment (so that it can be retrieved by the ASP.NET Identity components),
+        // the factory used here simply resolves the scoped context from the Autofac container to avoid
+        // having multiple instances of the same context created for each request. As such, the dispose
+        // callback action is left empty, as the context will be disposed by Autofac when the request ends.
+        app.CreatePerOwinContext<ApplicationDbContext>(
+            createCallback: (options, context) => container.Resolve<ApplicationDbContext>(),
+            disposeCallback: static (options, context) => { });
+
         app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
         app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
 

samples/Mortis/Mortis.Server/Views/Authorization/Logout.cshtml

@@ -9,7 +9,13 @@
         @Html.AntiForgeryToken()
 
         @* Flow the request parameters so they can be received by the LogoutPost action: *@
-        foreach (var parameter in Model.Parameters)
+        foreach (var parameter in string.Equals(Request.HttpMethod, "POST", StringComparison.OrdinalIgnoreCase) ?
+            from name in Request.Form.AllKeys
+            from value in Request.Form.GetValues(name)
+            select new KeyValuePair<string, string>(name, value) :
+            from name in Request.QueryString.AllKeys
+            from value in Request.QueryString.GetValues(name)
+            select new KeyValuePair<string, string>(name, value))
         {
             <input type="hidden" name="@parameter.Key" value="@parameter.Value" />
         }