Question

I’d like to allow my users to setup a schedule for their events. It could be a single day, or for convenience I’d like to allow them to specify a reoccurring event (similar to an Outlook appointment).

Storing a single day would be pretty easy, but how could I store and query a reoccurring event? I don’t need to do times, as I’d just store that separately, and if they needed a different time I’d just have them create another event. So no: Every Wednesday at 5 and Thursday at 3.

Examples:

Every mon, tues, wed, thu, fri, every week

Every wed every week

Every second tuesday of the month

I asked this a few years ago: How can I store and query schedule data? but it was using a SQL solution (SQL Server). I want to use Mongo though so a port is in order.

Answer 1

How about storing the original date and information about the recurrence? Its an unlimited field for experiments and you can invent a “recurring event format” of your own. For example:

event : {
   date: 17 May 2012 22.45, 
   recurring: "+2d"  # meaning, every second day after the date
}