Book Image

ASP.NET Core 5 and Angular - Fourth Edition

By : Valerio De Sanctis
Book Image

ASP.NET Core 5 and Angular - Fourth Edition

By: Valerio De Sanctis

Overview of this book

Learning full-stack development calls for knowledge of both front-end and back-end web development. ASP.NET Core 5 and Angular, Fourth Edition will enhance your ability to create, debug, and deploy efficient web applications using ASP.NET Core and Angular. This revised edition includes coverage of the Angular routing module, expanded discussion on the Angular CLI, and detailed instructions for deploying apps on Azure, as well as both Windows and Linux. Taking care to explain and challenge design choices made throughout the text, Valerio teaches you how to build a data model with Entity Framework Core, alongside utilizing the Entity Core Fluent API and EntityTypeConfiguration class. You’ll learn how to fetch and display data and handle user input with Angular reactive forms and front-end and back-end validators for maximum effect. Later, you will perform advanced debugging and explore the unit testing features provided by xUnit.net (.NET 5) and Jasmine, as well as Karma for Angular. After adding authentication and authorization to your apps, you will explore progressive web applications (PWAs), learning about their technical requirements, testing, and converting SWAs to PWAs. By the end of this book, you will understand how to tie together the front end and back end to build and deploy secure and robust web applications.
Table of Contents (15 chapters)
13
Other Books You May Enjoy
14
Index

Entity controllers

Now that we have thousands of cities and hundreds of countries in our database, we need to find a way to bring this data to Angular and vice versa. As we already know from Chapter 2, Looking Around, this role is played by the .NET controllers, so we're going to create two of them:

  • CitiesController, to serve (and receive) the cities' data
  • CountriesController, to do the same with the countries

Let's get started.

CitiesController

Let's start with the cities. Remember what we did when we created SeedController? What we're going to do now is rather similar, but this time we'll make good use of Visual Studio's code-generation features.

From our project's Solution Explorer, follow these steps:

  1. Right-click on the /Controllers/ folder.
  2. Click on Add | Controller.
  3. Choose the Add API Controller with actions, using Entity Framework option (the last one from the top, at the time...