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

A closer look at route matching

One of the key parts is the URLRouter class. You use this class to find a matching route and then run the action associated with this route. Matching follows these rules:

  • Routes are compared in the order that they are initially specified.

  • If a route matches, then the associate handler is executed.

  • Matching stops if a handler writes a response.

  • If no matching route is found, then the request is not handled. A 404 error is generated.

You need to specify the HTTP method and the route to match. The match() method takes the HTTP method, the match string, and the action callback as a parameter. The get(), post(), put(), delete_(), and patch() methods take only the match string and the action callback as a parameter and match the HTTP method of the same name. If you do not want to consider the HTTP method, then you use the any() method to add a match string. This can be useful if you want to log a request or implement some special route handling that is valid for all...