Lixiang Ding dinglixiang

Validate JSON schema in Rails

Topics

What/Why JSON schema
Apply to rails model validation
Test your API endpoint with schema matcher
Homework for a curious reader
References

One of the many reasons I love working with Ruby is it has a rich vocabulary that allows you to accomplish your goals with a minimal amount of code. If there isn't a method that does exactly what you want, it's usually possible to build an elegant solution yourself.

Let's take the example of simulating the rolling of a die.

We can represent a die as an array of its faces.

die = [*?⚀..?⚅]
# => ["⚀", "⚁", "⚂", "⚃", "⚄", "⚅"]

Deploy Rails app to digitalocean with nginx, unicorn, capistrano & postgres

Create droplet of your liking (ubuntu 12.10 x32)

ssh to root in terminal with your server ip

ssh [email protected]

Add ssh fingerprint and enter password provided in email

	module.exports = function(app) {
	var User = app.models.User;

	// TODO: (1) find an example of how to add new "properties" to the built-in User mode via boot script

	// (2) This is how you can add a "relationship" to the built-in User model via boot script
	var SomeOtherModel = app.models.SomeOtherModel;
	User.hasMany(SomeOtherModel, {as: 'someOtherModels', foreignKey: 'someOtherModelId'});

	// (3) This is how you can add "remote methods" to the built-in User model via boot script

	require 'will_paginate/view_helpers/link_renderer'

	module WillPaginate
	module ViewHelpers
	class LinkRenderer
	protected
	def page_number(page)
	page == current_page ? tag(:span, page, class: 'active item') : link(page, page, class: 'item', rel: rel_value(page))
	end

	# config/deploy.rb

	require 'mina/bundler'
	require 'mina/rails'
	require 'mina/git'
	require 'mina/rvm'

	# ter_mode 这个要设置，不然在 mac 下输密码有问题
	set :term_mode, nil
	set :rvm_path, '/usr/local/rvm/bin/rvm'

	require 'nokogiri'
	require 'open-uri'

	# Get a Nokogiri::HTML:Document for the page we're interested in...

	doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove'))

	# Do funky things with it using Nokogiri::XML::Node methods...

	####

	unless Rails.env.production?
	connection = ActiveRecord::Base.connection
	connection.tables.each do \|table\|
	connection.execute("TRUNCATE #{table}") unless table == "schema_migrations"
	end

	sql = File.read('db/import.sql')
	statements = sql.split(/;$/)
	statements.pop

	// layout file

	<body>
	<div class="container">

	<%= flash_messages %>

	<%= yield %>
	</div><!-- /container -->
	</body>

	<% flash.each do \|type, message\| %>
	<div class="alert <%= bootstrap_class_for(type) %> fade in">
	<button class="close" data-dismiss="alert">×</button>
	<%= message %>
	</div>
	<% end %>