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Objects on Rails
A developer notebook on applying classic Object-Oriented principles to Ruby on Rails projects.
Category Archives: Ruby
A Ruby Conversion Idiom
@CapnKernul writes: [do you know of] a Ruby idiom for converting an object to a type if it isn’t already that type. For example, if you want to only store an attribute of type Foo, you could write an accessor … Continue reading
Generating cows with IO.popen()
I find the subject of starting and interacting with other OS processes fascinating. A few years ago I wrote a never-completed series on the many ways to spawn off processes in Ruby: Part 1: Backticks and system() Part 2: Opening … Continue reading
Unless readable else confused
An exploration of why unless…else in Ruby is problematic at best. Continue reading
On Module Integrity
A reply to Josh Cheek’s post “Modules called, they want their integrity back”. Continue reading
Ruby Thread Locals are also Fiber-Local
I was briefly concerned that thread-local variables would not also be Fiber-local, since fibers have their own stack. This would be a problem for any code which uses thread-local variables to delimit a stack context, e.g. to implement dynamically-scoped variables … Continue reading
Decoration is best, except when it isn’t
I think by now we all know to prefer composition over inheritance. But in a language with a lot of options, what’s the best kind of composition to use? Composing an adventure Consider an adventure game, with objects representing player … Continue reading
Testing that a block is called
CapnKernul asks: Hey Avdi. How would you test that a method’s provided block is called in RSpec? Would you stub #to_proc (for &block) and mock #call? Typically the way I test that a block is called goes something like this: … Continue reading
Temporarily disabling warnings in Ruby
I’ve been doing a lot of pontification lately. Time for some code. Warnings are a hot topic in the Ruby community. Some folks love ‘em. Some folks hate ‘em. What we can all agree on is that they do us … Continue reading
Your Code is My Hell
It occurred to me recently that my experience as a Rails developer may be somewhat unique. I often get brought in to help preexisting Ruby/Rails projects evolve and mature in a sustainable way. As a result, the vast majority of … Continue reading
Posted in Rails, Rants, Ruby
Tagged architecture, design, legacy, maintenance, patterns, ruby. rails
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