Ian C. Anderson iancanderson

Paprika doesn't have their API documented, so this is me reverse-engineering it from an Android device

Live Demo

https://knowing-grain.glitch.me/

Code: https://glitch.com/edit/#!/knowing-grain

Sync

This post is also on my blog, since Gist doesn't support @ notifications.

Components are taking center stage in Ember 2.0. Here are some things you can do today to make the transition as smooth as possible:

Use Ember CLI
In general, replace views + controllers with components
Only use controllers at the top-level for receiving data from the route, and use Ember.Controller instead of Ember.ArrayController or Ember.ObjectController
Fetch data in your route, and set it as normal properties on your top-level controller. Export an Ember.Controller, otherwise a proxy will be generated. You can use Ember.RSVP.hash to simulate setting normal props on your controller.

Zero downtime deploys with unicorn + nginx + runit + rvm + chef

Below are the actual files we use in one of our latest production applications at Agora Games to achieve zero downtime deploys with unicorn. You've probably already read the GitHub blog post on Unicorn and would like to try zero downtime deploys for your application. I hope these files and notes help. I am happy to update these files or these notes if there are comments/questions. YMMV (of course).

Other application notes:

Our application uses MongoDB, so we don't have database migrations to worry about as with MySQL or postgresql. That does not mean that we won't have to worry about issues with the database with indexes being built in MongoDB or what have you.
We use capistrano for deployment.

Salient points for each file:

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

Your class can be no longer than 100 lines of code.
Your methods can be no longer than five lines of code.
You can pass no more than four parameters and you can’t just make it one big hash.
When a call comes into your Rails controller, you can only instantiate one object to do whatever it is that needs to be done. And your view can only know about one instance variable.

You can break these rules if you can talk your pair into agreeing with you.

Rails: Synchronizing your development database with your production database using Rake tasks

July 30, 2012

If you run an active website with lots of new content every day, it's often helpful to keep your local database up-to-date with your production database, so when you're working on the application locally you're working with fresh content.

Here are a couple rake tasks that you can copy-and-paste into your local Rails application which will make this syncing process a one-step process.

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

git-hub

This script opens a url to the github commit page

Install

add to a folder in $PATH (ie, /usr/local/bin, or if you have ~/bin part of your path). If the current branch is tracking a remote branch that is on github:

git hub # outputs the url to the most recent commit and opens it in default browser (if the commit has been pushed)

git hub -2 # opens the url to the 2nd most recent commit

	Development Phase:

	Step 1: Create Certificate .pem from Certificate .p12
	Command: openssl pkcs12 -clcerts -nokeys -out apns-dev-cert.pem -in apns-dev-cert.p12

	Step 2: Create Key .pem from Key .p12
	Command : openssl pkcs12 -nocerts -out apns-dev-key.pem -in apns-dev-key.p12

	Step 3: Optional (If you want to remove pass phrase asked in second step)
	Command : openssl rsa -in apns-dev-key.pem -out apns-dev-key-noenc.pem