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How to use enum enumerize on rails

We are using enumerize gem to define our enums. Here are few things to keep in mind when using it.

https://github.com/brainspec/enumerize

class ProSubscription < ActiveRecord::Base
  extend Enumerize

  enumerize :level, in: %w(premium pro enterprise global global_plus), predicates: true, scope: true
  enumerize :subscription_type, in: %w(monthly yearly biennially lifetime), predicates: true, scope: true
end

When defining enums this way, you now have access to bunch of helper methods:-

Example:-​

irb(main):003:0> ap ProSubscription.level.values
[
    [0] "premium",
    [1] "pro",
    [2] "enterprise",
    [3] "global",
    [4] "global_plus"
]
=> nil
irb(main):004:0> ap ProSubscription.subscription_type.values
[
    [0] "monthly",
    [1] "yearly",
    [2] "biennially",
    [3] "lifetime"
]
=> nil
irb(main):005:0> p = ProSubscription.first
=> #<ProSubscription id: 10, credit_card_id: 10, price: 499, level: "premium", subscription_type: "monthly", user_id: 13 ...

irb(main):006:0> p.subscription_type.monthly?
=> true
irb(main):007:0> p.subscription_type.yearly?
=> false
irb(main):008:0> p.level.premium?
=> true
irb(main):009:0> p.level.pro?
=> false
irb(main):010:0>


Predicates​

Predicates helps you define a helper method with question mark, example pro_subscription.yearly?

Scopes​

Scopes helps you define bunch of scopes per enum values, for example, if you like to query all pro_subscription with yearly subscription type you can do something like

ProSubscription.with_subscription_type(:yearly)