| // Use Gists to store code you would like to remember later on | |
| console.log(window); // log the "window" object to the console |
| input = "If you are self-motivated, wow, this world is tailored for you. The boundaries are all gone. But if you're not self-motivated, this world will be a challenge because the walls, ceilings and floors that protected people are also disappearing. That is what I mean when I say \"it is a 401(k) world.\" Government will do less for you. Companies will do less for you. Unions can do less for you. There will be fewer limits, but also fewer guarantees. Your specific contribution will define your specific benefits much more. Just showing up will not cut it. - T. Friedman".downcase | |
| pair = "ou" | |
| third = "r" | |
| pairs = (0..input.length-2).inject({}) do |h,i| | |
| key, val = input[i,2], input[i + 2] | |
| h[key] = {} unless h[key] | |
| h[key][val] = (h[key][val] || 0) + 1 if val | |
| h | |
| end |
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.