DateComponentsFormatter: Format 30 days to one month

Question

1010011010 OP

Created Feb ’20

Replies 2

Boosts 0

Views 1.1k

Participants 2

Is it possible to convince the DateComponentsFormatter that 30 days are also one month as 31 days are?

The backend to which our app is connected to sends a duration of 30 days and this should be displayed as "1 month" duration on the UI.

This is the code I used:

let formatter = DateComponentsFormatter()
formatter.allowedUnits = [.second, .minute, .hour, .day, .weekOfMonth, .month, .year]
formatter.unitsStyle = .full
formatter.maximumUnitCount = 1
formatter.string(from: duration)

And this will be formatted to "4 weeks" when the duration is 30 days and formatted to "1 month" when duration is 31 days.

Boost

Answer 1

Claude31 OP

Feb ’20

I would simply do this:

var adaptedDuration = duration
if duration > 28*86400 && duration <= 31*86400 {
    adaptedDuration = 31*86400
}
// Use now adaptedDuration

0

Answer 2

Claude31 OP

Feb ’20

Even though that was not through convincing DateFormatter to change its behavior, did this solve the issue ?

If not, what's the problem ?

If yes, don't forget to close the thread.

You could approach what you want with an extension:

extension DateComponentsFormatter {
    func monthString(from ti: TimeInterval) -> String? {
        var adaptedDuration = ti
        if ti > 28*86400 && ti <= 31*86400 {
            adaptedDuration = 31*86400
        }
        return self.string(from: adaptedDuration)
    }
}

Testing:

let duration : Double = 30*86400
print("string", formatter.string(from: duration)!)
print("monthString", formatter.monthString(from: duration)!)

string 4 weeks

monthString 1 month

0