cryptoanarchywiki.github.io/_posts/2013-12-23-ruby-json.markdown

layout, title, date, categories

layout	title	date	categories
post	Parsing JSON with Ruby	2013-12-23 00:18:23 +0700	ruby

Parsing JSON with Ruby is actually extremely easy. All you have to do is have the json gem installed (gem install json) and call the JSON.parse method on the JSON data to convert it to ruby hashes. If you look at this small program here, you can see how I have implemented parsing JSON in Ruby.

{% highlight ruby %} #!/usr/bin/env ruby

require 'json' require 'net/http' require 'libnotify'

def parsejson file = "http://api.openweathermap.org/data/2.5/find?q=London&mode=json" response = Net::HTTP.get_response(URI.parse(file)) weatherjson = response.body actual = JSON.parse(weatherjson)

# check for errors
if actual.has_key? 'Error'
    raise "error with the url"
end

results = []

actual["list"].each do |listitem|
    weather = listitem["weather"]
    weather.each do |weath|
        results.push(weath["description"])
    end
    main = listitem["main"]
    temp = main["temp"] - 273.15
    results.push ("%.2f" % temp)
end

return results

end {% endhighlight %}