decode json with dynamic coding keys

Question

I have a JSON file that contains details about cryptocurrency with a key that changes (you can see after data there are 1,2 and so on) I did some research and realized that I need to use a dictionary (as defined in struct coin info) the problem is that I get an error - "Expected to decode Dictionary<String, Any> but found a string/data instead.", underlying error: nil))

I would appreciate an explanation of what the problem is and where I am wrong.

my structs:

struct CoinsInfo:Codable {
    
    
    let data:[String:CoinSpecificInfo]?
  
}

struct CoinSpecificInfo:Codable {
    let urls:UrlsCoins?
    let logo:String?
    let id:Int?
    let symbol:String?
    

}

struct UrlsCoins:Codable {
    
    let website:[CoinWebsites]?
    let twitter:[CoinTwitters]?
    let facebook:[CoinFacebook]?
    let explorer:[CoinExplorer]?
    let reddit:[CoinReddits]?
    
    
}
struct CoinWebsites:Codable {
    
    let website:String?
    
}
struct CoinTwitters:Codable {
    
    let urlTwitters:String?
    
}
struct CoinFacebook:Codable {
    
    let urlFacebook:String?
    
}
struct CoinExplorer:Codable {
    
    
    let urlExplorer:String?
    
}
struct CoinReddits:Codable {
    
    let urlEReddits:String?
    
}

json format:

{
   "status":{
      "timestamp":"2022-10-09T11:11:11.686Z",
      "error_code":0,
      "error_message":null,
      "elapsed":1,
      "credit_count":1,
      "notice":null
   },
   "data":{
      "1":{
         "urls":{
            "website":[
               "pthkfb543fm",
               "49xjybh5mlq",
               "0uux1lvt44id",
               "kqb4lyfeos",
               "rbh8ui7r9dj",
               "0em815h34ay9",
               "zhmg6phhpmd",
               "z6smii44j5",
               "59bf5ofx2h4",
               "95l4hn2qvr6"
            ],
            "technical_doc":[
               "oid34tehsbb",
               "d1ofa6b2hbg",
               "9l1xpu1bo7",
               "ped2a98gup",
               "y951pv6v55e",
               "9tqxaa6capo",
               "hssug4slmc6",
               "28ocf6dnc3i",
               "cddlngcaboe",
               "xka0x1dijb"
            ],
            "twitter":[
               
            ],
            "reddit":[
               "sbv1ndmtcb",
               "wlu5zd1d2jq",
               "o2b8f0xek3",
               "70l3icwp1sd",
               "pmcm26nvg7d",
               "xz4idaq8at",
               "utaqexwga6",
               "px7o0o4e2f",
               "ginsnepn93i",
               "mqfaedmq29"
            ],
            "message_board":[
               "umt9tn7giq",
               "n37dd8jqkq",
               "b8j4r5gdoio",
               "9hsoy1y579b",
               "twexsn7t5di",
               "v52nrhmnrc",
               "jy5hui32j8k",
               "sssb806c71m",
               "t8sm0f2i1t",
               "tm5osp7fstg"
            ],
            "announcement":[
               
            ],
            "chat":[
               
            ],
            "explorer":[
               "opde5rdke6",
               "r6qhe54rmpl",
               "eoj3z1xqssm",
               "i09e7oxtj1b",
               "rfah6o4912n",
               "jrju212ljoo",
               "oeyzlewitpi",
               "o8l7lk1tsiq",
               "iwms7fi859p",
               "er098njihii"
            ],
            "source_code":[
               "grkckgsnlxd",
               "nl208dwuitg",
               "f09za84abdw",
               "dq5319hlyag",
               "ycf03rrymip",
               "tf76bcn0w9f",
               "2e0vl41amhw",
               "ztpq27uwj3m",
               "l3j3x6hnx5k",
               "zj1c4cl13j"
            ]
         },
         "logo":"d0ln7k9juc",
         "id":1,
         "name":"blntl59cjh",
         "symbol":"iaeaxzvx5jd",
         "slug":"1y0k474cv1d",
         "description":"i72hjlt621l",
         "date_added":"2022-10-09T11:11:11.686Z",
         "date_launched":"2022-10-09T11:11:11.686Z",
         "tags":[
            "n2jbg87vff",
            "vr7mthp6s7",
            "0vbnftw8hqz",
            "h2vhpc39dwf",
            "ocdozsqcv3",
            "0sry86fib7k9",
            "nqkgqwmhon",
            "a6hlvwuv7o",
            "n37q9hsx66a",
            "8edmkawhdlq"
         ],
         "platform":null,
         "category":"w4w9ris8y9p"
      },
      "2":{
         "urls":{
            "website":[
               "3fnvimztsqo",
               "obpgb3o03qc",
               "3rzbwjniljp",
               "lwzp3g0l7qn",
               "pj9i9esmycd",
               "rxxqdzsh74h",
               "c3h167i3gn9",
               "nhztuwzrbqo",
               "lu7gi5qm4fq",
               "pmxizdq4j1"
            ],
            "technical_doc":[
               "ucnmd1rwgji",
               "zxqw8ajty5",
               "tihr9s3f69",
               "l3ba21297z",
               "54kuohb05xn",
               "ml74ors5ltc",
               "utnqamn2ud9",
               "4wg8lcx8pbr",
               "abhp5ohx12b",
               "4fc1smpj5ps"
            ],
            "twitter":[
               
            ],
            "reddit":[
               "alimp4er63t",
               "urpga0uwill",
               "dl68fd2bq8f",
               "vp8mgbjcbv",
               "w6p16dbnv5s",
               "q8dvzg90d",
               "1dkfx8g4f1ui",
               "oederkt3df",
               "00d49eblt6j3l",
               "ywcnpmio49s"
            ],
            "message_board":[
               "cqoizsyx8mn",
               "vqxjb3g2y2r",
               "9oadavn71xm",
               "ew9qubh8x4n",
               "czbbkpt4egu",
               "jbx26vqega",
               "kynzrmrazae",
               "s5twwsy7bw",
               "rw7oep10pj",
               "xqoyj0kc79q"
            ],
            "announcement":[
               
            ],
            "chat":[
               
            ],
            "explorer":[
               "ioac8iuqyma",
               "v9xm5fpid7",
               "hssvwnwhe17",
               "9o77col8hk4",
               "b6tr44woibq",
               "3zoyuxe9s2z",
               "eeh948ksf9o",
               "qdhnncab0po",
               "z80tc2ztsh",
               "xki8g0zw8vh"
            ],
            "source_code":[
               "q5njdmu1tvp",
               "rswxz9717k",
               "fchf720dx3",
               "rzzfhi5mk3g",
               "t3qzejl5gt",
               "qm22rerkrc",
               "11lgg2etg4l",
               "0dru9zhnof7",
               "l2x2n8ueq0c",
               "z33p76whb7c"
            ]
         },
         "logo":"jywrmmc68g",
         "id":2,
         "name":"uiyzzwog9d",
         "symbol":"gy73ckf5l1v",
         "slug":"ki7li2ah6l",
         "description":"o7v6hhf1qce",
         "date_added":"2022-10-09T11:11:11.686Z",
         "date_launched":"2022-10-09T11:11:11.686Z",
         "tags":[
            "157427ygz4v",
            "u5iba7d9yt",
            "89xtswitklk",
            "l8mwl50329c",
            "av0ty13yxi8",
            "27luj3irtrj",
            "6bqwzp1w7lr",
            "7zusdyi69od",
            "kwxa2knt0dn",
            "hpsc19nhm67"
         ],
         "platform":null,
         "category":"1jrjafok03s"
      }
   }
}

can you show the real json data, what you show is not json, all keys must be quoted, that is, "status": {..} not status: {..}. Which api are you trying to call? Also, as mentioned in your previous question, copy and paste the "real" json data into app.quicktype.io to get all correct struct models. Does this not work for you? — workingdog support Ukraine
– workingdog support Ukraine, Commented Oct 9, 2022 at 11:03
i copied the JSON from what i get from rest API get request , I tried using app.quicktype.io it didn't work — Hello422
– Hello422, Commented Oct 9, 2022 at 11:05
Show us the api. Use print("\(String(data: data, encoding: .utf8))") to print the response, and show us the results. app.quicktype.io did not work because it is not json. — workingdog support Ukraine
– workingdog support Ukraine, Commented Oct 9, 2022 at 11:06

Christos Koninis · Accepted Answer · 2022-10-09 11:41:30Z

1

I would appreciate an explanation of what the problem is and where I am wrong.

The problem is that the website, twitter, facebook, explorer, reddit keys are arrays of strings in the JSON response not arrays of custom objects so if you change the UrlsCoins to:

struct UrlsCoins:Codable {

    let website:[String]?
    let twitter:[String]?
    let facebook:[String]?
    let explorer:[String]?
    let reddit:[String]?
}

You will be able to parse the JSON

edited Oct 9, 2022 at 11:41

answered Oct 9, 2022 at 11:33

Christos Koninis

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