| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE | |
| Version 2, December 2004 | |
| Copyright (C) 2011 Tom Robinson <http://tlrobinson.net/> | |
| Everyone is permitted to copy and distribute verbatim or modified | |
| copies of this license document, and changing it is allowed as long | |
| as the name is changed. | |
| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE |
It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media
This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.
| # No yielding | |
| class NormPerson | |
| attr_accessor :first, :last | |
| def initialize(first = nil, last = nil) | |
| @first = first | |
| @last = last | |
| end | |
| def hello | |
| puts "#{@first} #{@last} says hello!" |
The idea is to have nginx installed and node installed. I will extend this gist to include how to install those as well, but at the moment, the following assumes you have nginx 0.7.62 and node 0.2.3 installed on a Linux distro (I used Ubuntu).
In a nutshell,
So for example, www.foo.com request comes and your css, js, and images get served thru nginx while everything else (the request for say index.html or "/") gets served through node.
| def wrap(angle): | |
| if angle > pi: | |
| angle -= (2*pi) | |
| if angle < -pi: | |
| angle += (2*pi) | |
| if angle < 0: | |
| angle += 2*pi | |
| return angle | |
| def magnetometer_readings_to_tilt_compensated_heading(bx, by, bz, phi, theta): |
