Serialization TimeOfDay with Rails and jsonb

business_hours.rb

#!/usr/bin/env ruby

# Supplies TimeOfDay class that includes parsing, strftime, comparison, and arithmetic
gem 'tod', '~> 2.2'

ActiveRecord::Schema.define do
  add_column :businesses, :force => true do |t|
    t.jsonb :business_hours
  end
end
### It turns out you need to set the business_hours to nil, and then Rails will take care of setting the attributes.
### I was previously setting the migration to include default: '{}', null: false and receiving a 
### IndexError (string not matched) error

class Business < ActiveRecord::Base
  store_accessor :business_hours, :sunday_opens_at, :sunday_closes_at,
                                  # ...

  serialize :sunday_opens_at, Tod::TimeOfDay
  serialize :sunday_closes_at, Tod::TimeOfDay
  # ...
end
### Using a store accessor allows you to specify the keys you want to access directly without referencing the JSONB field
### Note: I had an issue declaring serialize before the store accessor

module ApplicationHelper
  def time_select_options(step=15)
    tod = Tod::TimeOfDay.new 0
    times = []
    96.times do
      times << [tod.strftime("%l:%M %P"), tod]
      tod = tod + step.minutes
    end
    times
  end
end

<%= form_with(model: storage_property) do |form| %>
   <% I18n.t('date.day_names').each_with_index do |day, wday| %>
      <td class="day">
        <div class="form-group">
          <%= form.label :"#{day.downcase}_opens_at" %>
          <%= form.select :"#{day.downcase}_opens_at", time_select_options, label: "Open Time", include_blank: "Closed" %>
        </div>

        <div class="form-group">
          <%= form.select :"#{day.downcase}_closes_at", time_select_options, label: "Close Time", include_blank: "Closed" %>
        </div>
      </td>
    <% end %>
<% end %>