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

Serving static files

Static files such as the CSS stylesheet use a catch-all route in the note application:

router.get("*", serveStaticFiles("public/"));

All GET requests that are not previously handled are routed to the serveStaticFiles() function. This function sends the file to the client if it exists in the local public/ folder. If the file is not found, then the function returns without writing a response. This is done for every request so the number of files and the content of the files may change during the lifetime of your application. You will only need to set up a route for GET requests as the browsers issues only HTTP GET requests for these files, in accordance with the semantic of the HTTP method explained earlier.

The serveStaticFiles()function itself checks whether the path in the request matches a configured prefix. The default value of the prefix is the root folder /. The prefix is removed from the request path. This relative path is appended to the local folder (which is the...