Firestore: encoding & decoding strategies

[mshershnev]

For now you can use encoding & decoding strategies for Firestore.

This request fix issue #44

[mshershnev]

        let encoder = FirestoreEncoder()

        encoder.dateEncodingStrategy = .custom { date, encoder in
            var container = encoder.singleValueContainer()
            try container.encode(Timestamp.init(date: date))
        }

        let decoder = FirestoreDecoder()

        decoder.dateDecodingStrategy = .custom { decoder -> Date in
            let container = try decoder.singleValueContainer()
            let timestamp = try container.decode(Timestamp.self)

            return timestamp.dateValue()
        }

[Moriquendi]

👍

[otri]

@mshershnev love it!
But, I get a warning:
Instance method 'decode' requires that 'Timestamp' conform to 'Decodable'

Wondering how you managed to get Timestamp to be decodable?

EDIT: Found It!

Include the swift cocoapods extensions in your Podfile:
pod 'FirebaseFirestoreSwift'

And where you need to use it in yourfile.swift:
import Firebase import FirebaseFirestoreSwift import CodableFirebase

Original thread on this topic is here:
Add support for object serialization in Firestore

[otri]

Unfortunately, after a lot of effort to make CodableFirebase better, I realized that Google's finished the complete solution in:
pod 'FirebaseFirestoreSwift'

Use Firestore.Decoder() directly. This will decode your struct Date() types correctly.

[mshershnev]

@otri try to add 4 extensions:

extension GeoPoint: GeoPointType {}
extension Timestamp: TimestampType {}
extension FieldValue: FieldValueType {}
extension DocumentReference: DocumentReferenceType {}

[yvetterowe]

Unfortunately, after a lot of effort to make CodableFirebase better, I realized that Google's finished the complete solution in:
pod 'FirebaseFirestoreSwift'

Use Firestore.Decoder() directly. This will decode your struct Date() types correctly.

Thanks for the reference! Took me a decade to realize Google already supports this