People Picker (pplpkr)

README.md

A code snippet to start from

mkdir -p ~/Code/
pushd ~/Code/

git clone https://gist.github.com/5809220.git pplpkr

pushd ./pplpkr/

model.rb

# This adds JSON.parse and Array#to_json
# json is just a way to format arrays, maps, strings, numbers, boolean, and nil for saving in a file
require("json")

# In order for something to be `require`-able, it must be a class or module
class Model

  # this method simply saves a ruby object to a file (in json format)
  def self.save(filename, stuff)
    File.open(filename, "w") { |f|
      # objects only have a to_json method when json is required
      f.write(stuff.to_json)
    }
  end

  # this method simply loads a ruby object from a file (in json format)
  def self.load(filename)
    begin
      File.open(filename, "r") { |f|
        data = f.read()
        # JSON only exists when json is required
        return JSON.parse(data)
      }
    rescue
      return nil
    end
  end
end

names.json

["Theo", "Megan", "Bryan", "Travis"]

pplpkr.rb

#!/usr/bin/env ruby
require("./model")

names = Model.load("names.json")
p(names)

Model.save("names.json", names)