JSON-Decoder has an error - but I can't find out which!

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1

Hello together,
I am developing some kind of "Product Overview"...

I receive this JSON from my API:

[
    {
        "id": 2,
        "name": "Coca Cola",
        "price": 2.2,
        "ust": 19,
        "options": [
                "small",
                "large"
        ]
    }
]

Then I am decoding with this Codable:

struct Product: Identifiable, Codable {
    var id: Int
    var name: String
    var price: Double
    var ust: Int
    var options: [String]?
}

And it throws an error when decoding:

AF.request("apiblablbablba").responseDecodable(of: [Product].self){response in
                    products = response.value ?? ([] as [Product])
                    if((response.error) != nil){
                        print(String(describing: response.error))
                    }
                }

And ALL THESE PARTS result in this error:

Alamofire.AFError.responseSerializationFailed(reason: Alamofire.AFError.ResponseSerializationFailureReason.decodingFailed(error: Swift.DecodingError.typeMismatch(Swift.Array<Any>, Swift.DecodingError.Context(codingPath: [_JSONKey(stringValue: "Index 5", intValue: 5), CodingKeys(stringValue: "options", intValue: nil)], debugDescription: "Expected to decode Array<Any> but found a dictionary instead.", underlyingError: nil))))

I don't know why but CAN't find the problem! I already researched about the problem "Expected to decode Array but found a dictionary instead." - but they always said, the to the affected key corresponding value is a directory (so it is {bla}), but in my case it IS an array, isn't it?

I would be SO HAPPY if anybody could PLEASE help me with this!!!

Thanks and best greets,
Jannis

2

Is that your entire response there, or is there more than one item in the root array? I suggest you check your entire response to ensure options is always an array.

3

Hello, thanks for the quick response! Yes, there are multiple Products and it are ALWAYS arrays - here the full response - but it's in German:

[
    {
        "id": 2,
        "name": "Coca Cola klein",
        "price": 2.2,
        "ust": 19,
        "options": null
    },
    {
        "id": 3,
        "name": "Coca Cola groß",
        "price": 3.4,
        "ust": 19,
        "options": null
    },
    {
        "id": 4,
        "name": "1/4l Weißwein",
        "price": 5.8,
        "ust": 19,
        "options": null
    },
    {
        "id": 5,
        "name": "1/4l Rotwein",
        "price": 5.8,
        "ust": 19,
        "options": null
    },
    {
        "id": 8,
        "name": "Helles",
        "price": 2.9,
        "ust": 7,
        "options": [
            "klein",
            "gross"
        ]
    },
    {
        "id": 9,
        "name": "Pils",
        "price": 2.9,
        "ust": 7,
        "options": {
            "4": "klein",
            "5": "gross"
        }
    },
    {
        "id": 10,
        "name": "Milchreis",
        "price": 3.5,
        "ust": 7,
        "options": [
            "klein",
            "groß"
        ]
    },
    {
        "id": 11,
        "name": "Kuchen",
        "price": 3,
        "ust": 7,
        "options": [
            "mit Sahne"
        ]
    },
    {
        "id": 12,
        "name": "Potatoe Wedges m. Dip",
        "price": 3,
        "ust": 7,
        "options": [
            "mit Ketchup",
            "mit Mayo",
            "mit Salsa-Dip",
            "mit BBQ-Dip"
        ]
    }
]
4

OH DAMN - I just have seen the error - I think. I have to look up in the Symfony backend!

5

No, you've got a dictionary in there:

{
  "id": 9,
  "name": "Pils",
  "price": 2.9,
  "ust": 7,
  "options": {
    "4": "klein",
    "5": "gross"
  }
}
6

yes, I have just seen it... how can I close this thread? Or delete?

7

Can't delete now that there are responses, so don't worry about it.

8

Ok, thanks :)