Require Json Ruby

Json generateは 引数に渡したrubyのhashをjson形式の文字列に1行で変換して返します to jsonメソッドと違い jsonモジュールを使用できる様にする為にrequire json を実行する必要があります.

Require json ruby. It is easy for machines to parse and generate. The four code snippets below will. On ruby 1 8 7 you ll need to install a gem. Define a url to be parsed.

So if you re using 1 9 2 you re probably all set. A source can either be a string like object an io like object or an object responding to the read method. However in ruby 1 9 2 the json gem is bundled with the core ruby distribution. Let s look at how to retrieve and parse json results from a restful api using the four most popular ruby http libraries.

Given below is a ruby program that will be used to parse the above mentioned json document usr bin ruby require rubygems require json require pp json file read input json obj json parse json pp obj on executing it will produce the following result. It is based on a subset of the javascript programming language standard ecma 262 3rd edition december 1999. The ruby toolbox lists no less than 25 http clients. Generating or serializing json in ruby.

We ll use the spotify api because it allows requests without authentication. You can choose to load a set of common additions to ruby core s objects if you require json add core to get the best compatibility to rails json implementation you can require json add rails both of the additions attempt to require json like above first if it has not been required yet. In this article you ll learn how to generate and parse json data in ruby. Json is a language agnostic lightweight data interchange format.

An object convertible into a hash by a to h method that is used as or to configure a state object. Make an http get request to that url. Require json pure to use the pure variant. It s easy to read and understand both by humans and machines.

It is easy for humans to read and write. Ruby has a built in module that contains methods to generate and parse json. State is a json state object. Generate a json document from the ruby data structure obj and return it.

Json is a text format that is completely language. Load a ruby data structure from a json source and return it. It defaults to a state object that creates the shortest possible json text in one line checks for circular data structures and doesn t. Installing the json gem.

If proc was given it will be called with any nested ruby object as an argument recursively in depth first order.