UPGRADE YOUR SKILLS: Learn advanced Swift and SwiftUI on Hacking with Swift+! >>

How to specify your own date format with Codable and JSONEncoder

Swift version: 5.6

Paul Hudson    @twostraws   

When using JSONEncoder to encode dates, there are a handful of built-in date formats you can choose from. If none of them fit your needs, why not make your own? You can configure a DateFormatter using whatever date and time format you want, then pass that to the JSONEncoder as its dateEncodingStrategy property, like this:

let encoder = JSONEncoder()
let formatter = DateFormatter()
formatter.dateStyle = .full
formatter.timeStyle = .full
encoder.dateEncodingStrategy = .formatted(formatter)

That converts any Date properties to be the fullest possible string for your locale, e.g. "Monday, February 5, 2018 at 9:28:10 PM Greenwich Mean Time”.

Hacking with Swift is sponsored by Essential Developer

SPONSORED Join a FREE crash course for mid/senior iOS devs who want to achieve an expert level of technical and practical skills – it’s the fast track to being a complete senior developer! Hurry up because it'll be available only until April 28th.

Click to save your free spot now

Sponsor Hacking with Swift and reach the world's largest Swift community!

Available from iOS 8.0

Similar solutions…

About the Swift Knowledge Base

This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.

BUY OUR BOOKS
Buy Pro Swift Buy Pro SwiftUI Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let us know!

Average rating: 1.0/5

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.