docbrown/app/models/profile_field_group.rb

class ProfileFieldGroup < ApplicationRecord
  has_many :profile_fields, dependent: :nullify

  validates :name, presence: true, uniqueness: true

  scope :onboarding, lambda {
    includes(:profile_fields).where(profile_fields: { show_in_onboarding: true })
  }

  scope :non_empty_groups, lambda {
    joins(:profile_fields).includes(:profile_fields).order(:name).uniq
  }
end