Can't parse JSON?

Question

iOS

I'm trying to colorize the data so that I can later put it in a TableView, but I'm catching an error:

keyNotFound(App.Animals.(CodingKeys in _EBC6E47D2E8ACFFEC4B52F4698C3D2D3).animal, Swift.DecodingError.Context(codingPath: [], debugDescription: “No value associated with key animal (“animal”).”, underlyingError: nil))

Here is my code:

func getAnimal() {
        
        guard let url = URL(string: "http://test.com/rest/animal") else { return }
        var request = URLRequest(url: url)
        request.httpMethod = "GET"
        request.addValue("application/json", forHTTPHeaderField: "Content-Type")
        request.addValue("application/json", forHTTPHeaderField: "Accepts")
        
        let session = URLSession.shared
        session.dataTask(with: request) { (data, response, error) in
            if let response = response {
                print(response)
                
            }
            
            if let data = data {
                do {
                    guard let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String:Any] else {return}
                    print("(\n\n\n\n\n\(json)")
                    
                    let decoder = JSONDecoder()
                    let downloadedAnimals = try decoder.decode(Animals.self, from: data)
                    self.animals = downloadedAnimals.animal
                    print("my animal = \(self.animals)")
                    
                    DispatchQueue.main.async {
                        self.tableView.reloadData()
                    }
                    
                } catch {
                    print(error)
                }
            }
        }.resume()
      }


class Animals: Codable {
    let animal: [Animal]

init(animal: [Animal]) {
    self.animal = animal
}
}

class Animal: Codable {
    let animalName: [String]
    let animalAbout: [String]

init(animal_title: [String], animal_about: [String]){
    self.animalName = animal_title
    self.animalAbout = animal_about
}

 private enum CodingKeys: String, CodingKey {
        case animalName = "animal_title"
        case animalAbout = "animal_about"
    }
}

The resulting JSON looks like this:

{«animals":[{"animal":{"animal_title":"hiking","animal_color":"Red","animal_birthdate":"02.04.2018","animal_image":{"src":"http:\/\/test.com\/sites\/default\/files\/IMG_20180322_175407_771.txt","alt":""},"animal_about":"bulb "}},{"animal":{"animal_title":"Random animal","animal_color":"Purple","dino_birthdate":"09.05.2005","dino_image":{"src":"http:\/\/dinotest.art-coral.com\/sites\/default\/files\/Free-shipping-Inflatable-Dinosaur-Costume-Fan-Operated-Adult-Kids-Size-Halloween-Cosplay-Animal-Dino-Rider-T_6.jpg","alt":""},"dino_about":"People's best friend"}},
{"dino":{"dino_title":"Terri","dino_color":"Green","dino_birthdate":"06.04.1988","dino_image":{"src":"http:\/\/dinotest.art-coral.com\/sites\/default\/files\/1-pihskuyxeeulvjfbwhjnlg.jpeg","alt":""},"dino_about":"Dinosaurs belong to a group known as archosaurs, which also includes modern crocodilians. Within the archosaur group, dinosaurs are differentiated most noticeably by their gait. Dinosaur legs extend directly beneath the body, whereas the legs of lizards and crocodilians sprawl out to either side."}}]}

Answer 1

The speaker above is right. What you posted here is invalid JSON. Throw off the valid one, we will continue the conversation.
Update: Terrible JSON
What is this for???

init(animal_title: [String], animal_about: [String]){
    self.animalName = animal_title
    self.animalAbout = animal_about
}

 private enum CodingKeys: String, CodingKey {
        case animalName = "animal_title"
        case animalAbout = "animal_about"
    }

It's been possible to do this for a long time now:

let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase

Answer 2

If this is all json, then it is simply invalid.