How to change day of week from English to Locale - swift

Question

I'm working on calendar with this pod https://github.com/miraan/CalendarDateRangePickerViewController. I changed months names but can't change days of week.
I tried to add components.calendar?.locale = Locale(identifier: "ru_RU") and dateFormatter.locale = Locale.autoupdatingCurrent but nothing has changed.
func getWeekdayLabel(weekday: Int) -> String {
var components = DateComponents()
components.calendar = Calendar.current
components.calendar?.locale = Locale(identifier: "ru_RU")
components.weekday = weekday
let date = Calendar.current.nextDate(after: Date(), matching: components, matchingPolicy: Calendar.MatchingPolicy.strict)
if date == nil {
return "E"
}
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEEEE"
return dateFormatter.string(from: date!)
}

Answer 1

Your code is needlessly overcomplicated.
What you want to get is just weekday symbols. Shortest form as possible.
And Calendar has dedicated property for this: veryShortStandaloneWeekdaySymbols.
And the result function is:
func getWeekdayLabel(weekday: Int) -> String {
// TODO: Move this away, and reuse, it would be the same for every call ↓
var calendar = Calendar.autoupdatingCurrent
calendar.locale = Locale(identifier: "ru_RU") // Or any other locale, if you wan current, just drop this line
// TODO: ↑
return calendar.veryShortStandaloneWeekdaySymbols[weekday - 1] // because CalendarDateRangePickerViewController uses 1...7 weekday range, and here it's 0...6(or 0..<7)
}
And if you want weekdays described in more length use other *weekdaySymbols from the See Also section.