Ransack with JSONB query

ransackable_scopes.rb

class Registration < ActiveRecord::Base
  scope :nhb_consent_eq, -> (enum = "yes") {
    where("document @> ?", { nhb_consent: { value: enum } }.to_json )
  }

  private

  def self.ransackable_scopes(auth_object = nil)
    %i(nhb_consent_eq)
  end
end

> Registration.search(nhb_consent_eq: "yes").result.to_sql
SELECT "registrations".* FROM "registrations" WHERE (document @> '{"nhb_consent":{"value":"yes"}}')