Quick and Clean Rails Code by Chad Fowler – a summary

The last NOVARUG meeting was great. I have been insanely busy since then, but felt remiss not posting anything about it. So here’s a short summary with more details to come as I get time.

Chad gave a great presentation that comes from his recent experience as being a Reviewer of Rails Projects. In short: there’s a lot for all of us to learn as a community to improve the state of the practice of Rails, we need to do more testing and we really need to know Ruby better.

To give his points a little more emphasis, I started to think of them as Chad’s Rules of Quick and Clean Rails:

Chad Rule #0 – Be zealous about testing. Do TDD. A lot of this can be driven from that perspective.


Chad Rule #2 – Think of controllers where you script the interaction between rich business objects. Don’t go above or below that level.

Chad Rule #3 – You should only do 4 lines of code in an action. Don’t include respond_to and don’t include semicolons. Colons are ok however. ;)

Chad Rule #4 – Utilize Association Proxies.

Chad Rule #5 – Use before filters to DRY up your controllers. This is sort of like when you set variables in the setup method of unit tests.
But…when you start inheriting before_filters, you introduce a level of magic which can make things mysterious.
Use this to get around Chad Rule #3. lol

Chad Rule #6 – Make your own language. Create DSLs when you can.

Chad Rule #7 – Use with_scope wisely.

Chad Rule #8 – NO (imperative) CODE IN YOUR VIEWS!

Chad Rule #9 – Hide the ugly things where you don’t have to look at them.

Chad Rule #10 – Use RJS helpers to reduce duplication.

Chad Rule #11 – Blocks (almost) always make it better.

Chad Rule #12 – Implicit coupling and conventions are good.

Chad Rule #13 – Master Ruby!!!

Bonus Chad Rule: Leave. If you can’t change your organization, Change your organization.

Then we had a lively discussion about outsourcing/offshoring and another one about metaprogramming.

Thanks to our sponsors and their gifts that we gave away. And here’s the obligatory Ruby code…

sponsors = {
  :relevance_llc => "Rails for Java Developers",
  :oreilly => "Rails Cookbook",
  :peepcode => "PeepCode coupon",
  :pragmatic_studio => "'I'd rather be on Rails' bumper stickers"

assert_equal 56, session[:attendance]

2 Replies to “Quick and Clean Rails Code by Chad Fowler – a summary”

  1. Hi

    Great summary!

    I saw Chad’s presentation online, but it was impossible to see the code examples. Do you have that examples?


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