Book Image

ASP.NET Core 2 and Angular 5

By : Valerio De Sanctis
Book Image

ASP.NET Core 2 and Angular 5

By: Valerio De Sanctis

Overview of this book

Become fluent in both frontend and backend web development by combining the impressive capabilities of ASP.NET Core 2 and Angular 5 from project setup right through the deployment phase. Full-stack web development means being able to work on both the frontend and backend portions of an application. The frontend is the part that users will see or interact with, while the backend is the underlying engine, that handles the logical flow: server configuration, data storage and retrieval, database interactions, user authentication, and more. Use the ASP.NET Core MVC framework to implement the backend with API calls and server-side routing. Learn how to put the frontend together using top-notch Angular 5 features such as two-way binding, Observables, and Dependency Injection, build the Data Model with Entity Framework Core, style the frontend with CSS/LESS for a responsive and mobile-friendly UI, handle user input with Forms and Validators, explore different authentication techniques, including the support for third-party OAuth2 providers such as Facebook, and deploy the application using Windows Server, SQL Server, and the IIS/Kestrel reverse proxy.
Table of Contents (17 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Defining relationships


Now that we have built our main entity skeleton, we need to create some relationships between them. We want to be able to do stuff like retrieve a Quiz, then browse to their related Questions and get the available Answers. We'll also need to fetch the Result(s) for any given score, find out the ApplicationUser who made the quiz, and so on. To do this, we have to implement a set of entity-related properties that Entity Framework will load on demand using its default Lazy-Load retrieval feature.

The first thing we’ll do is add a new region to our Quiz class containing these three new properties:

#region Lazy-Load Properties
/// <summary>
/// The quiz author: it will be loaded
/// on first use thanks to the EF Lazy-Loading feature.
/// </summary>
[ForeignKey("UserId")]
public virtual ApplicationUser User { get; set; }

/// <summary>
/// A list containing all the questions related to this quiz. 
/// It will be populaed on first use thanks to the EF Lazy...