Book Image

D Web Development

By : Kai Nacke
Book Image

D Web Development

By: Kai Nacke

Overview of this book

D is a programming language with C-like syntax and static typing. The vibe.d framework builds on powerful D concepts like template meta-programming and compile-time function execution to provide an easy-to-use environment for web applications. The combination of a feature-rich web programming framework with a language compiling to native code solves two common issues in web development today: it accelerates your development and it results in fast, native web applications. Learning the vibe.d framework before you start your application will help you to choose the right features to reach your goal. This book guides you through all aspects of web development with D and the vibe.d framework. Covering the popular operating systems today, this guide starts with the setup of your development system. From the first Hello World-style application you will move on to building static web pages with templates. The concise treatment of web forms will give you all the details about form handling and web security. Using the abstractions of the web framework you will learn how to easily validate user input. Next, you will add database access to your application, providing persistent storage for your data. Building on this foundation, you will expose your component and integrate other components via REST. Learning about the internals of vibe.d you will be able to use low-level techniques such as raw TCP access. The vibe.d concepts can also be used for GUI clients, which is the next topic that you will learn. vibe.d is supported by an active community, which adds new functionality. This comprehensive guide concludes with an overview of the most useful vibe.d extensions and where to find them. It also shows you how to integrate these extensions in your application. The concepts are always illustrated with source code, giving you an insight into how to apply them in your application.
Table of Contents (17 chapters)
D Web Development
About the Author
About the Reviewers

Creating and using a REST service

The NoteStore class is used to persist and retrieve notes. Because other applications may require this functionality, too, you want to provide it as a service. Starting with the implementation based on Redis from Chapter 5, Accessing a Database, you can extract the following interface and save it is as notestore.d:

module notestore;

struct Note
  long id;
  string topic;
  string content;

interface NoteStore
  Note[] getNotes(string name);
  long addNote(string name, Note note);

The only change here is that addNote() cannot have a ref Note parameter. The reason is that the caller of the method lives in a different process that is possible on a different computer. Therefore, the Note struct of the caller cannot be changed.

The server and client both require this interface. You use a separate module for it.

Providing a service

Let's create the server side. The main difference from the previous implementations is that the implementation of the NoteStore...