Candyfair app · Nov 6, 2015
Halloween season came around and with it came big bags of candy at the office. Some candies disappeared faster than others, leading exclamations like “aww all the Twix are gone!” or “there’s nothing but stupid 3 Musketeers left” to be heard around the office. Summer remarked that we needed an app to tell us how best to divide the candy so that no one who didn’t want stupid 3 Musketeers would be forced to eat them, and the weirdos who actually like 3 Musketeers could revel in their abundance. Enter my next pet project.
Arel and tags · Jun 19, 2015
I love working out ActiveRecord and Arel queries in Rails apps. I thought I’d share some of the more fun queries I’ve designed in Arel, spread out over a few blog posts. We’ll start with one for fetching tags separated by account.
BlicblockJS: a game from The Sims 4 · Oct 1, 2014
RailsBridge Lexington · Apr 21, 2013
painful Facebook application development · Feb 2, 2010
For the past few days, I’ve been trying to create a Facebook application for interacting with Github. I hoped to spend my time mainly on the Github portion, figuring out how to post wall posts on Facebook about recent Github activity, etc. However, I’ve instead argued with the various Facebook APIs. I started out using PHP with no framework but quickly switched to CakePHP after I realized things were going to get hairy. CakePHP was okay for a while until I hit the roadblock of not being able to load any page but the index… Every sub-page I tried to create produced 404 errors, which no one else seemed to have (or at least document), so I said ‘screw it’ and switched to Rails.
code reports Rake task · Apr 7, 2009
finding invalid foreign keys in Rails · Nov 15, 2007
Sometimes it would be useful to tell users of your Ruby on Rails application if there is a problem in the database, such as some foreign keys are invalid. As an example, let’s assume you have two models, Book and Author, such that each Book has an author_id which connects with Author via its primary key, id. That is, the tables are: books(id, author_id) and authors(id). Each table probably has fields other than that, but those are the only fields we need to worry about. Below is a method that generates an unordered HTML list for display to the users:
the many methods to #find things in Rails · Nov 22, 2006
For the longest time, I didn’t understand the full power of the various #find methods in Rails. I probably still don’t, but my understanding of them has certainly expanded. I used to use plain #find for everything. If I wanted to find all rows in the table ‘groups’ that had an ‘id’ field value of 1, 2, 3, or 4, I would do something like this:
#post method in tests with a different controller · Nov 14, 2006
I wanted a #login method in test_helper that would allow me to easily login from any of my functional tests. However, the #post method won’t allow you to set a different controller than the one in the @controller instance variable that’s defined in your test’s #setup. Well, by looking at how the #process method works, you can see that it just grabs the controller from @controller. Redefine that, and you’re good to go:
go from model to associated table name and back · Aug 31, 2006
Given a table object, it returns the related string object; e.g.
SubAttribute => 'sub-attribute'. Useful if you want to make a list of all your tables with perhaps their fields listed out to the side.
conditioner for ActiveRecord-friendly conditions from a collection · Aug 31, 2006
I frequently have a collection of values that I want to match in an ActiveRecord query, but it would be nice if I could let ActiveRecord handle checking the data and escaping it properly. So, I wrote this method to return ActiveRecord-friendly conditions, such as:
["user_id=? AND job_id=?", 3, 4]
simple Rails preference storage · Aug 11, 2006
So you’ve got some Rails application and you need to store information from the users across their interactions with the app. Here’s a simple, straightforward way to do that.