obdev/app/models/user.rb

class User < ApplicationRecord
  rolify
  devise :database_authenticatable, :registerable, :recoverable, :rememberable, :validatable
  has_many :access_periods, dependent: :destroy
  accepts_nested_attributes_for :access_periods, allow_destroy: true
  after_create :assign_default_role

  
  # Validation for date fields
  validate :end_date_after_start_date, if: -> { access_revoked && access_end_date.present? }

  # Override Devise method to consider access_revoked
  def active_for_authentication?
    super && !access_revoked
  end

  private

  def assign_default_role
    self.add_role(:user) unless self.has_any_role?
  end

  def end_date_after_start_date
    if access_start_date.present?
      errors.add(:access_end_date, 'must be provided when access is revoked') unless access_end_date.present?
      if access_end_date && access_end_date < access_start_date
        errors.add(:access_end_date, 'must be after the start date')
      end
    end
  end
end