Ruby Check if at least one element from collection meets condition

Question

My models have the following relation

class User < ActiveRecord::Base
  has_many :controllers
end

class Controller < ActiveRecord::Base
  belongs_to :user
end

Controller has a boolean called is_active.

I would like to raise an exception if all controller objects which belong to a specific user object are is_active false.

Unfortunately i struggle putting this sentence into code.

# if for all controllers is_active false is met, raise exception
# ~>  need to find one controller which is active
array = []
User.find(id).controllers.each do |c|
   array << c.is_active
end
unless array.include?('true') 
 raise ...
end

It feels like there is a more rubisch way to write this.

Answer 1

If is_active is a database column than you might want to write:

Controller.exists?(user_id: id, is_active: true)

If is needs to be calculated:

User.find(id).controllers.any?(&:is_active)

Answer 2

user.controllers.any?(&:is_active)

would be the best option here.