How to validate overlapping times in Rails

Question

I have an Event model that has form time and to time in my schedule app and I want to validate the overlapping time before saving.

Answer 1

In your EventsController#Create & EventsController#Update methods check for new time in between the old times like :

events = Event.where(:departure_date => event_params[:departure_date])
events.each do |event|
 if event_params[:to].between?(event.to, event.from) || event_params[:from].between?(event.to, event.from)
  flash[:error] = "Current Slot Time is already taken!"
  redirect_to :back
  return
 end
end