Matthias Orgler morgler

#Heroku, Ruby on Rails and PhantomJS

In this post, I’m going to show you how to modify an existing Ruby on Rails app running on Heroku’s Cedar stack to use PhantomJS for screen scraping. If you’ve never heard of PhantomJS, it’s a command-line WebKit-based browser (that supports JavaScript, cookies, etc.).

Let’s get started. This is a high-level overview of the required steps:

Modify your app to use multiple Heroku buildpacks.
Extend your app to use both the Ruby as well as the PhantomJS buildpacks.
Confirm that everything worked.

Deverus Vue.js Style Guide

Guide for developing Vue.js applications.

v. 0.0.1

Vue.js is an amazing framework, which can be as powerful as Angular or React, the two big heavy hitters in the world of front-end frameworks.

However, most of Vue's ease-of-use is due to the use of Observables - a pattern that triggers re-renders and other function calls with the reassignment of a variable.

First of all, please note that token expiration and revoking are two different things.

Expiration only happens for web apps, not for native mobile apps, because native apps never expire.
Revoking only happens when (1) uses click the logout button on the website or native Apps;(2) users reset their passwords; (3) users revoke their tokens explicitly in the administration panel.

1. How to hadle JWT expiration

A JWT token that never expires is dangerous if the token is stolen then someone can always access the user's data.

Quoted from JWT RFC:

	/ This SASS function makes it easy to get cross-browser opacity.
	/
	/ Firefox and Safari use CSS opacity.
	/ Internet Explorer 7 and 8 each require their own flavor of the opacity alpha filter.
	/
	/ See http://www.quirksmode.org/css/opacity.html for more info on opacity.
	/
	/ Pass an opacity value between 0.0 and 1.0
	=opacity(!value)
	:opacity= !value

	=Navigating=
	visit('/projects')
	visit(post_comments_path(post))

	=Clicking links and buttons=
	click_link('id-of-link')
	click_link('Link Text')
	click_button('Save')
	click('Link Text') # Click either a link or a button
	click('Button Value')

	gem 'dragonfly', '~>0.9.4'

	group :production do
	gem 'fog' # for Amazon S3
	end

	@PageSpinner =
	spin: (ms=500)->
	@spinner = setTimeout( (=> @add_spinner()), ms)
	$(document).on 'page:change', =>
	@remove_spinner()
	spinner_html: '
	<div class="modal hide fade" id="page-spinner">
	<div class="modal-head card-title">Please Wait...</div>
	<div class="modal-body card-body">
	<i class="icon-spinner icon-spin icon-2x"></i>

	# Credit Brandon Weiss of http://anti-pattern.com/dirty-associations-with-activerecord

	# app/models/dirty_associations.rb
	module DirtyAssociations
	attr_accessor :dirty
	attr_accessor :_record_changes

	def make_dirty(record)
	self.dirty = true
	self._record_changes = record

	var camelCase = require('lodash.camelcase');
	const {Map, Record, List} = require('immutable');

	class Todo extends Record({ description: null, completed: false }) {
	toggle() {
	return this.set('completed', !this.completed);
	}
	}

	const InitialTodoApp = Record({

	const functions = require('firebase-functions'); // To stub config()
	const admin = require('firebase-admin'); // To get credential cert for initializeApp
	const firebase = require('firebase'); // To sign in test user and test database writes
	const assert = require('chai').assert;
	const sinon = require('sinon');

	// https://firebase.google.com/docs/functions/unit-testing

	// The functions make use of 'firebase-admin', whereas client-side code uses 'firebase'.
	// We initialze 'firebase' here to mock client-side code.