Create models from a JSON file, even a Baby can do it.
Baby can infer property's type from json such as String, Int, Double, URL and Date.
Baby can handle nested json, it will generate nested models.
Baby supports Codable from Swift 4.
JSON:
{
"id": 42,
"name": "nixzhu",
"twitter": {
"profile_url": "https://twitter.com/nixzhu",
"created_at": "2009-05-12T10:25:43.511Z"
}
}Swift code with Codable:
struct User: Codable {
let id: Int
let name: String
struct Twitter: Codable {
let profileURL: URL
let createdAt: Date
private enum CodingKeys: String, CodingKey {
case profileURL = "profile_url"
case createdAt = "created_at"
}
}
let twitter: Twitter
}Note that there use Property Map profile_url: profileURL to change the property name (Automatically generated will be profileUrl).
Swift code without Codable:
struct User {
let id: Int
let name: String
struct Twitter {
let profileURL: URL
let createdAt: Date
init(profileURL: URL, createdAt: Date) {
self.profileURL = profileURL
self.createdAt = createdAt
}
init?(json: [String: Any]) {
guard let profileURLString = json["profile_url"] as? String else { return nil }
guard let profileURL = URL(string: profileURLString) else { return nil }
guard let createdAtString = json["created_at"] as? String else { return nil }
guard let createdAt = DateFormatter.iso8601.date(from: createdAtString) else { return nil }
self.init(profileURL: profileURL, createdAt: createdAt)
}
}
let twitter: Twitter
init(id: Int, name: String, twitter: Twitter) {
self.id = id
self.name = name
self.twitter = twitter
}
init?(json: [String: Any]) {
guard let id = json["id"] as? Int else { return nil }
guard let name = json["name"] as? String else { return nil }
guard let twitterJSONDictionary = json["twitter"] as? [String: Any] else { return nil }
guard let twitter = Twitter(json: twitterJSONDictionary) else { return nil }
self.init(id: id, name: name, twitter: twitter)
}
}You may need a DateFormatter extension:
extension DateFormatter {
static let iso8601: DateFormatter = {
let formatter = DateFormatter()
formatter.timeZone = TimeZone(abbreviation: "UTC")
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSSSSZ"
return formatter
}()
}Baby can also handle array root json, it will automatically merge properties for objects in array.
$ bash install.sh$ baby -i JSONFilePath$ baby --helpTry Baby's web interface SharedBaby if you like.
Or, buy the CuteBaby on the Mac App Store.
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