Clean Architecture Solution Template

This is a solution template for creating a Single Page App (SPA) with Angular and ASP.NET Core following the principles of Clean Architecture. Create a new project based on this template by clicking the above Use this template button or by installing and running the associated NuGet package (see Getting Started for full details).

Technologies

.NET Core 3.1
ASP .NET Core 3.1
Entity Framework Core 3.1
Angular 9
MediatR
AutoMapper
FluentValidation
NUnit, FluentAssertions, Moq & Respawn

Getting Started

The easiest way to get started is to install the NuGet package and run dotnet new ca-sln:

Install the latest .NET Core SDK
Install the latest Node.js LTS
Run dotnet new --install Clean.Architecture.Solution.Template to install the project template
Create a folder for your solution and cd into it (the template will use it as project name)
Run dotnet new ca-sln to create a new project
Navigate to src/WebUI and run dotnet run to launch the project

Check out my blog post for more information.

Database Configuration

The template is configured to use an in-memory database by default. This ensures that all users will be able to run the solution without needing to set up additional infrastructure (e.g. SQL Server).

If you would like to use SQL Server, you will need to update WebUI/appsettings.json as follows:

  "UseInMemoryDatabase": false,

Verify that the DefaultConnection connection string within appsettings.json points to a valid SQL Server instance.

When you run the application the database will be automatically created (if necessary) and the latest migrations will be applied.

Database Migrations

To use dotnet-ef for your migrations please add the following flags to your command (values assume you are executing from repository root)

--project src/Infrastructure (optional if in this folder)
--startup-project src/WebUI
--output-dir Persistence/Migrations

For example, to add a new migration from the root folder:

dotnet ef migrations add "SampleMigration" --project src\Infrastructure --startup-project src\WebUI --output-dir Persistence\Migrations

Running Angular Independently

The project is configured to start the front end in the background when ASP.NET Core starts in development mode. This feature is designed with productivity in mind. However, when making frequent back end changes productivity can suffer as it takes up to 10 seconds (or longer) to launch the application after a back end change.

You can launch the front end independently by updating the Configure method within the Startup class as follows:

// spa.UseAngularCliServer(npmScript: "start");
spa.UseProxyToSpaDevelopmentServer("http://localhost:4200");

Then, to launch the application, open a command-line to start the front end:

cd ClientApp
npm start

Next, open a second command line and start the back end:

dotnet run

This will ensure your application will launch quickly when making either front end or back end changes.

Overview

Domain

This will contain all entities, enums, exceptions, interfaces, types and logic specific to the domain layer.

Application

This layer contains all application logic. It is dependent on the domain layer, but has no dependencies on any other layer or project. This layer defines interfaces that are implemented by outside layers. For example, if the application need to access a notification service, a new interface would be added to application and an implementation would be created within infrastructure.

Infrastructure

This layer contains classes for accessing external resources such as file systems, web services, smtp, and so on. These classes should be based on interfaces defined within the application layer.

WebUI

This layer is a single page application based on Angular 9 and ASP.NET Core 3.1. This layer depends on both the Application and Infrastructure layers, however, the dependency on Infrastructure is only to support dependency injection. Therefore only Startup.cs should reference Infrastructure.

Support

If you are having problems, please let us know by raising a new issue.

License

This project is licensed with the MIT license.

fishonline/CleanArchitecture