Working with active records in rails is nice because a lot of your domain is directly represented in your model classes.
Sometimes however, you still need to create some domain classes that aren’t tied to a database model, and reference them in your app.
I’m not sure what the best way (or convention) is for doing this, but what’s been working for me is to create a separate directory called domain
and place my domain object(s) in there:
class TimeRange def self.today (Time.now.midnight)..Time.now.end_of_day end def self.yesterday (Time.now.midnight - 1.day)..Time.now.end_of_day end def self.last_week (Time.now.prev_week)..Time.now.end_of_day end def self.ages_ago (Time.now.prev_year)..Time.now.end_of_day end end
And then referencing them where I need them using the ‘require_relative’ command.
require_relative '../domain/time_range' require_relative '../domain/constants' class CitiesController < ApplicationController