ruby-on-railsrubyruby-on-rails-4rails-activerecordruby-on-rails-4.1

In Rails 4.1, how to find records by enum symbol?


Assume I have this model:

class Conversation < ActiveRecord::Base
  enum status: [ :active, :archived ]
end

How can I find all active conversations without using the numeric value of the enum or without having to iterate over each conversation?

I tried doing Conversation.where(status: :active), but it didn't yield any results.

The only solution comes to mind is to iterate over all conversations and select the active ones, but it doesn't look like a good solution.

Conversation.all.select {|conversation| conversation.active? }  

Is there anything I can do about this?


Solution

  • ActiveRecord::Enum provides scopes based on its values.

    Just try:

    Conversation.active
    

    or

    Conversation.archived
    

    Of course, you can create your own scopes as Kyle Decot mentioned.