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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

By : Ray Rischpater, Brian Ritchie
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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

1 (2)
By: Ray Rischpater, Brian Ritchie

Overview of this book

If you're writing applications that move structured data from one place to another, this book is for you. This is especially true if you've been using XML to do the job because it's entirely possible that you could do much of the same work with less code and less data overhead in JSON. While the book's chapters make some distinction between the client and server sides of an application, it doesn't matter if you're a frontend, backend, or full-stack developer. The principles behind using JSON apply to both the client and the server, and in fact, developers who understand both sides of the equation generally craft the best applications.
Table of Contents (12 chapters)
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11
Index

Reading and writing JSON in Ruby

Ruby provides the json gem for JSON handling. In earlier versions of Ruby, you have to install this gem yourself; it's part of the base installation from Ruby 1.9.2 and onwards.

Getting ready

If you're running an earlier version of Ruby than Ruby 1.9.2, first install the gem with the following command:

gem install json

Note that Ruby's implementation is in C, so installing the gem may require a C compiler. If you don't have one installed on your system, you can install the pure Ruby implementation of the gem using the following command:

gem install json_pure

Regardless of whether you need to install the gem or not, you'll need to include it in your code. To do this, include both rubygems and json or json/pure, depending on which gem you installed; do this using require, like this:

require 'rubygems'
require 'json'

The preceding code handles the former case, while the following code handles the latter:

require 'rubygems...

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