Codable Handle dynamic key at root

Question

I have already seen couple of similar question but I have different JSON

So I have JSON looks like below

var json = """
{
"Array1": [
{
"FinancialYear": "17-18"

}],
"Array2": [
{
"FinancialYear": "17-18"
}]
}
"""

the issue is Array1 and Array2 keys which seems to be dynamic and it is at ROOT and can be more like Array3, Array4 etc

I want to use Codable but because of dynamic key at the root (Array1,Array2) I am not able to get the rid of it.

Here is Struct that I have tried but not working

struct CodableJSON: Codable {
    var response:[String:[ArrayInside]]
    enum CodingKeys: String, CodingKey   {
        case response = "What should I write here ?" // What should be here ? 
    }

}

Did you check answers on this post: stackoverflow.com/questions/50713638/… — emrepun
– emrepun, Commented Dec 27, 2018 at 10:04
@emrepun Yes I have seen this But If you observe periods is root key so there is no issue with that but I have dynamic root key — Prashant Tukadiya
– Prashant Tukadiya, Commented Dec 27, 2018 at 10:12
@Tobi Thanks comment , Can't be sure. about that. I don't want to bother in future for changes in key. so I am searching for generic solution that can work in all cases as accepted answer provided me. — Prashant Tukadiya
– Prashant Tukadiya, Commented Dec 27, 2018 at 10:24

vadian · Accepted Answer · 2018-12-27 10:14:22Z

4

In this case declare only the ArrayInside struct

struct ArrayInside: Decodable {
   ...
}

and decode the root object as dictionary

let result = try JSONDecoder().decode([String:[ArrayInside]].self, from: data)

answered Dec 27, 2018 at 10:14

vadian

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1 Comment

Prashant Tukadiya Over a year ago

Yes , That should work !! I have fixed it with long route , Thanks vadian you always suggests best

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