Change object mapping style for the app startup template.

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain/MyProjectNameDomainModule.cs

@@ -1,4 +1,5 @@
 using MyCompanyName.MyProjectName.MultiTenancy;
+using MyCompanyName.MyProjectName.ObjectExtending;
 using Volo.Abp.AuditLogging;
 using Volo.Abp.BackgroundJobs;
 using Volo.Abp.FeatureManagement;
@@ -27,6 +28,11 @@ namespace MyCompanyName.MyProjectName
         )]
     public class MyProjectNameDomainModule : AbpModule
     {
+        public override void PreConfigureServices(ServiceConfigurationContext context)
+        {
+            MyProjectNameDomainObjectExtensions.Configure();
+        }
+
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
             Configure<AbpMultiTenancyOptions>(options =>

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain/ObjectExtending/MyProjectNameDomainObjectExtensions.cs

@@ -1,10 +1,8 @@
-using Volo.Abp.Identity;
-using Volo.Abp.ObjectExtending;
-using Volo.Abp.Threading;
+using Volo.Abp.Threading;
 
-namespace MyCompanyName.MyProjectName.MongoDB
+namespace MyCompanyName.MyProjectName.ObjectExtending
 {
-    public static class MyProjectNameEntityExtensions
+    public static class MyProjectNameDomainObjectExtensions
     {
         private static readonly OneTimeRunner OneTimeRunner = new OneTimeRunner();
 
@@ -12,8 +10,11 @@ namespace MyCompanyName.MyProjectName.MongoDB
         {
             OneTimeRunner.Run(() =>
             {
-                /* You can extension properties to entities
+                /* You can configure extension properties to entities or other object types
                  * defined in the depended modules.
+                 * 
+                 * If you are using EF Core and want to map the entity extension properties to new
+                 * table fields in the database, then configure them in the MyProjectNameEfCoreEntityExtensionMappings
                  *
                  * Example:
                  *
@@ -21,7 +22,7 @@ namespace MyCompanyName.MyProjectName.MongoDB
                  *    .AddOrUpdateProperty<IdentityRole, string>("Title");
                  *
                  * See the documentation for more:
-                 * https://docs.abp.io/en/abp/latest/Customizing-Application-Modules-Extending-Entities
+                 * https://docs.abp.io/en/abp/latest/Object-Extensions
                  */
             });
         }

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain/Users/AppUser.cs

@@ -48,7 +48,7 @@ namespace MyCompanyName.MyProjectName.Users
          *
          * 1. update MyProjectNameDbContext.OnModelCreating
          * to configure the mapping for your new property
-         * 2. Update MyProjectNameEntityExtensions to extend the IdentityUser entity
+         * 2. Update MyProjectNameEfCoreEntityExtensionMappings to extend the IdentityUser entity
          * and add your new property to the migration.
          * 3. Use the Add-Migration to add a new database migration.
          * 4. Run the .DbMigrator project (or use the Update-Database command) to apply

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore.DbMigrations/EntityFrameworkCore/MyProjectNameMigrationsDbContextFactory.cs

@@ -11,7 +11,7 @@ namespace MyCompanyName.MyProjectName.EntityFrameworkCore
     {
         public MyProjectNameMigrationsDbContext CreateDbContext(string[] args)
         {
-            MyProjectNameEntityExtensions.Configure();
+            MyProjectNameEfCoreEntityExtensionMappings.Configure();
 
             var configuration = BuildConfiguration();
 

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameDbContext.cs

@@ -46,7 +46,7 @@ namespace MyCompanyName.MyProjectName.EntityFrameworkCore
                 b.ConfigureAbpUser();
 
                 /* Configure mappings for your additional properties
-                 * Also see the MyProjectNameEntityExtensions class
+                 * Also see the MyProjectNameEfCoreEntityExtensionMappings class
                  */
             });
 

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameEfCoreEntityExtensionMappings.cs

@@ -4,7 +4,7 @@ using Volo.Abp.Threading;
 
 namespace MyCompanyName.MyProjectName.EntityFrameworkCore
 {
-    public static class MyProjectNameEntityExtensions
+    public static class MyProjectNameEfCoreEntityExtensionMappings
     {
         private static readonly OneTimeRunner OneTimeRunner = new OneTimeRunner();
 
@@ -15,6 +15,11 @@ namespace MyCompanyName.MyProjectName.EntityFrameworkCore
                 /* You can configure entity extension properties for the
                  * entities defined in the used modules.
                  *
+                 * The properties defined here becomes table fields.
+                 * If you want to use the ExtraProperties dictionary of the entity
+                 * instead of creating a new field, then define the property in the
+                 * MyProjectNameDomainObjectExtensions class.
+                 *
                  * Example:
                  *
                  * ObjectExtensionManager.Instance

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameEntityFrameworkCoreModule.cs

@@ -29,7 +29,7 @@ namespace MyCompanyName.MyProjectName.EntityFrameworkCore
     {
         public override void PreConfigureServices(ServiceConfigurationContext context)
         {
-            MyProjectNameEntityExtensions.Configure();
+            MyProjectNameEfCoreEntityExtensionMappings.Configure();
         }
 
         public override void ConfigureServices(ServiceConfigurationContext context)

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.MongoDB/MongoDb/MyProjectNameMongoDbModule.cs

@@ -24,11 +24,6 @@ namespace MyCompanyName.MyProjectName.MongoDB
         )]
     public class MyProjectNameMongoDbModule : AbpModule
     {
-        public override void PreConfigureServices(ServiceConfigurationContext context)
-        {
-            MyProjectNameEntityExtensions.Configure();
-        }
-
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
             context.Services.AddMongoDbContext<MyProjectNameMongoDbContext>(options =>