How to define a table schedule? - ruby-on-rails-3

Question

I have a table Schedules where I can store the day(s) a Person work. Now I want to add the hours this Person works. Let's say Person works Monday from 9am to 11am, Tuesday from 9am to 6pm, and so on...
Also in every date range (from start_time to end_time ) how can I set the hours Person do not work like lunch time?
create_table "schedules", :force => true do |t|
t.datetime "created_at", :null => false
t.datetime "updated_at", :null => false
t.integer "person_id"
t.boolean "sun"
t.boolean "mon"
t.boolean "tue"
t.boolean "wed"
t.boolean "thu"
t.boolean "fri"
t.boolean "sat"
end
Should I create a second table to store the hours of each day?

Answer 1

I think modeling a Person's work schedule will work better as a one-to-many:
Person
has_many :shifts
end
Shift
#fields person_id, day, start_time, end_time
belongs_to :person
end
Then, to create the schedule you describe ('Monday from 9am to 11am, Tuesday from 9am to 6pm, and so on...'):
#person = Person.find(1)
#person.shifts.create!(:day => 'mon', :start_time => '9 am', :end_time => '11 am')
#person.shifts.create!(:day => 'tue', :start_time => '9 am', :end_time => '6 pm')
When you wanted to display this info, just iterate over the Person's Shifts:
#person.shifts.each do |s|
puts "#{#person.name} works on #{s.day} from #{s.start_time} to #{s.end_time}."
end
You could choose to simply model 'lunch breaks' by giving the Person two shifts for that day . If, for instance, they worked from 9am to 7pm with an hour off starting at 1pm, give them on shift on that day from 9am to 1pm and one from 2pm to 7pm.

Answer 2

You could create a ref table between Person and Days (for example) that would include the Time and the flag for whenever they work or not.