TIL, 2017-04-10

ActiveSupport inquiry.

"production".inquiry.production? # => true
"active".inquiry.inactive?       # => false

- You can turn off Facebook Messenger.
- You can do something like this to enable both `/authors/` and `/authors/posts` via `Authors::PostsController`.

``` ruby

namespace :authors do
  resource :posts
end

resources :authors

private_constant to hide implementation details.
Strong params syntax.
Stronger params.
Converstaion with alvin re Rails is actually just a set of apps working together
Try to make methods with just one arity if possible.
2 queries are needed at least for joining 2 tables, unless you do a join from the start.
Enumerable find to not access db again.
Rethink policy DSL.
Hash functional replace: merge.
JSON standard.
Ruby Hash store method is an alias for []=.
DHH controller structuring