json missing fields swift - arrays

Question

So I have a function that pulls data from a json file and parses it. Its throwing me a nil error because some of the json entries don't have the "colors" field/array. How would i account for this and put in "ERROR" as the text for the ones that didn't.
func getData2(){
let dataPath = NSBundle.mainBundle().pathForResource("cardata", ofType: "json")
if let JSONData = NSData(contentsOfFile: dataPath!)
{
do
{
if let dictionariesArray = try NSJSONSerialization.JSONObjectWithData(JSONData, options: NSJSONReadingOptions()) as?
[[String: AnyObject]]
{
for dictionary in dictionariesArray
{
let name = dictionary["name"] as! String
let type = dictionary["type"] as! String
let text = String(dictionary["text"])
if let printingsArray = dictionary["colors"] as? [String]
{
let printingsString = String(printingsArray.joinWithSeparator("-"))
nameColor[name] = printingsString
}
nameType[name] = type
nameText[name] = text
}
}
}
catch
{
print("Could not parse file at")
}
}
struct Card {
let name: String
let type: String
let colorr: String
let textt: String
init(name: String, type: String, textt: String, colorr:String) {
self.name = name
self.type = type
self.textt = textt
self.colorr = colorr
}
}
var goodCard = [Card]()
for (cardName, cardType) in nameType {
let cardText = nameText[cardName]!
let cardColor = nameColor[cardName]! //fatal error: unexpectedly found nil while unwrapping an Optional value
goodCard.append(Card(name: cardName, type: cardType, textt: cardText, colorr: cardColor))
}
if typee != "" {
let redDogs = goodCard.filter {$0.type == typee}
print(redDogs)
}

Answer 1

You should avoid using the forced unwrapping operator ! whenever possible. If you use it and the Optional is nil then when you use the variable it will throw an exception. Instead use optional binding to unwrap the value:
// optional binding
if let cardColor = nameColor[cardName] {
// do something with the value
}