Nifty enums for Rails apps

2012-04-22 ·

Yesterday, when wondering about the best representation for enum, I came along a nifty gem called symbolize. The gem introduces an easy way to use symbols for values of an attribute. It provides a dedicated method (symbolize) that allows to return a symbol as a value of an attribute that method is used for.

It can be done like so

Two options I found pretty cool are scope and methods.

Option scope (class)

ActiveRecord flavour

FooBar.great # => FooBar.all(conditions: { quux: :great })

Mongoid flavour

FooBar.great # => FooBar.where({ quux: :great })

Scopes can be also chained.

FooBar.great.cdr

Option methods (object)

It add fancy boolean methods to objects with enum.

@foobar.great?
@foobar.car?

So, wanna have cool enum inside your Rails app ? Check it on GitHub.

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