"+1 month" considered harmful

[kenwest]

If an instalment is paid on Oct 31, then "+1 month" will schedule the next payment on Dec 1, as there is no Nov 31.

I suggest we use the cycle_day column in the Recurring Contribution table to avoid this.

• Pay the first instalment on the day it's scheduled (when the original Contribution is Pending)
• Pay subsequent instalments on the 'cycle_day' of the month
• cycle_day has a value from 1 to 28. If is set to the day-of-the-month for the first instalment, but '29', '30', and '31' round down to '28'
• Thus subsequent payments are a month apart and no months are skipped

Should I go ahead and code this?