String is not convertible to String:AnyObject - swift

Question

I am trying out the Alamofire helpers for networking with my server. I am building up a router for handling my API endpoints. The construction itself seems clear to me, but I am struggling with some SWIFT syntax.
enum Router:URLRequestConvertible {
static let baseURLString = "url"
case AEDS
var URLRequest: NSURLRequest {
let (path: String, parameters: [String: AnyObject]) = {
switch self {
case .AEDS:
let params = [""]
return("/aeds", params)
}
}()
let URL = NSURL(string: Router.baseURLString)
let URLRequest = NSURLRequest(URL: URL!.URLByAppendingPathComponent(path))
let encoding = Alamofire.ParameterEncoding.URL
return encoding.encode(URLRequest, parameters: parameters).0
}
}
I get the message that inside my case .AEDs the params are throwing an error:
[String] is not convertible to [String: AnyObject]
I am kind of new to Swift and could not figure out so far, where to start. I think I provided the array that I am defining. So what does this error mean?

Answer 1

In your switch case, you need to defines params as a dictionary and not as an array.
switch self {
case .AEDS:
let params = [""] <---- This is initialising an array containing a string
return("/aeds", params)
}
Try changing to:
switch self {
case .AEDS:
let params = ["" : ""] <---- This will create a dict
return("/aeds", params)
}
That should solve your problem.