JSONEncoder with dictionary of objects?

Question

Created Aug ’23

Replies 1

Boosts 0

Participants 2

I have a need to wrap several kinds of objects into a dictionary say [String: Any?], but how do I tell that the Any? object is all Encodable?

let params: [String: Any?] = ["num": 123, "text": "abc", "obj": encodableobject]

JSONEncoder().encode(params) // compiler error because Any? is not Encodable

Answered by Claude31 in 762753022

You just cannot.

What I do in such a case

create an intermediate struct, Codable, with the different properties
"num": Int, "text": String, "obj": Encodableobject
convert the dict to such an object
Now I can encode as JSON and decode and rebuild dictionary

If that may help :

maybe with protocol extension: https://stackoverflow.com/questions/62252547/value-of-protocol-type-encodable-cannot-conform-to-encodable-only-struct-en ?
interesting thread here: https://forums.swift.org/t/serializing-a-dictionary-with-any-codable-values/16676/10

Boost

Answer 1

Claude31 OP

Aug ’23

Accepted Answer

You just cannot.

What I do in such a case

create an intermediate struct, Codable, with the different properties
"num": Int, "text": String, "obj": Encodableobject
convert the dict to such an object
Now I can encode as JSON and decode and rebuild dictionary

If that may help :

maybe with protocol extension: https://stackoverflow.com/questions/62252547/value-of-protocol-type-encodable-cannot-conform-to-encodable-only-struct-en ?
interesting thread here: https://forums.swift.org/t/serializing-a-dictionary-with-any-codable-values/16676/10

0