umairabid

class StateTax < ApplicationRecord
  attr_accessor :effective_date

  def save_temporal
    StateTax.transaction do
      raise ArgumentError, 'Effective date is not set' unless effective_date.present?
      raise ArgumentError, 'Cannot save temporal an existing record' if persisted?

      now = Time.zone.now
      new_row = self.class.new(state_id: state_id, tax_type: tax_type, rate: rate)

umairabid

class AddStateTaxes < ActiveRecord::Migration[7.0]
  def change
    create_table :state_taxes do |t|
      t.integer :state_id, null: false
      t.string :tax_type, null: false
      t.decimal :rate, null: false
      t.daterange :effective_range, null: false
      t.tsrange :system_range, null: false
    end