Simple Sinatra/ActiveRecord RESTful API

color.rb

require 'active_record'

class Color < ActiveRecord::Base

end

create-tables.rb

require 'active_record'

ActiveRecord::Base.establish_connection(:adapter => 'sqlite3', :database => 'colors.db')

ActiveRecord::Schema.define do
  create_table :colors do |t|
    t.column :name, :string
    t.column :description, :string
    t.column :value, :string
  end
end

server.rb

require 'sinatra'
require 'active_record'
require "./color.rb"

ActiveRecord::Base.establish_connection(:adapter => 'sqlite3', :database => 'colors.db')
ActiveRecord::Base.include_root_in_json = false

get '/colors' do
  Color.all.to_json
end

get '/color/:id' do
  Color.where(:id => params['id']).first.to_json
end

post '/color' do
  if params.has_key?('name') and params.has_key?('description') and params.has_key?('value')
    newColor = Color.new(:name => params['name'], 
      :description => params['description'], 
      :value => params['value'])
    newColor.save
  end
end

put '/color/:id' do
  selectedColor = Color.where(:id => params['id']).first
  if selectedColor
    if params.has_key?('name')
      selectedColor.name = params['name']
    end
    if params.has_key?('description')
      selectedColor.description = params['description']
    end
    if params.has_key?('value')
      selectedColor.value = params['value']
    end
    selectedColor.save
  end
end

delete '/color/:id' do
  Color.where(:id => params['id']).destroy_all
end