Swift 4 JSON Decode [String: Any]

Asked Oct 29 '18 at 06:14

Active Oct 29 '18 at 06:14

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I'm in a situation where the response JSON is of kind [String: Any], something like below:

{ "response": {"a": 1, "b": "String", "c": [] }}

Now at the client side, we don't know the keys for the response, we need to consume the response as it is and forward the dictionary received as a response to another api. Hence, the requirement is to store the response as [String: Any]. With the code below to parse the response,

try values.decode([String: Any].self, forKey: "response")

I get an error

No 'decode' candidates produce the expected contextual result type '[String : Any]'.

Please suggest on how I can parse it as [String: Any].

Thank you

asked Oct 29 '18 at 06:14

Shashank

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Check my answer here: https://stackoverflow.com/a/50030133/2857130 – staticVoidMan Oct 29 '18 at 06:19
If you don't know the keys don't use `Decodable`, use traditional `JSONSerialization`. The goal of `Decodable` is to get structs or classes from the JSON. – vadian Oct 29 '18 at 08:03
I don't know the keys for one value, others I know. So, is there a hybrid approach? – Shashank Oct 29 '18 at 08:06
This article helped. https://medium.com/grand-parade/parsing-fields-in-codable-structs-that-can-be-of-any-json-type-e0283d5edb – Shashank Oct 29 '18 at 11:29
With this spaghetti-code in the article you are going to lose the advantage (and efficiency) of `Codable`. – vadian Oct 29 '18 at 17:36
@vadian, can you be more elaborate on the statement? – Shashank Oct 31 '18 at 04:59

Swift 4 JSON Decode [String: Any]

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