first of all i would like to say i got the exact same problem as the following question: How to add data to HTTPBody with PUT method in NSURLSession?. But it wasn't answered so i made my own question.
We have written a node API for a school assignment. We've tested the whole API. (The chances of being something wrong there are slim.)
After that i went working on a iOS client to CRUD users. Making a user is going perfectly, but whenever i try to edit a user something strange happens. The data on the server arrives as undefined.
I use the following code to save a user:
func saveUser(user: User, completionHandler: (String?, User?) -> Void) {
let url = NSURL(string: "https://pokeapi9001.herokuapp.com/api/users/")
let request = NSMutableURLRequest(URL:url!)
request.HTTPMethod = "POST"
let postString = "email=\(user.email)&password=\(user.password!)&role=\(user.role)"
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringCacheData
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
print("error: \(error)")
}
do {
guard let data = data else {
throw JSONError.NoData
}
guard let json = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? NSDictionary else {
throw JSONError.ConversionFailed
}
//do specific things
} catch let error as JSONError {
completionHandler(error.rawValue, nil)
} catch let error as NSError {
completionHandler(error.debugDescription, nil)
}
}
task.resume()
}
keep in mind, this is working perfectly (don't know if it is intended to be used like this)
To edit a user i use the following code:
func editUser(user: User, completionHandler: (String?, User?) -> Void) {
let url = NSURL(string: "https://pokeapi9001.herokuapp.com/api/users/\(user.id!)")
let request = NSMutableURLRequest(URL:url!)
request.HTTPMethod = "PUT"
let postString = "email=\(user.email)&password=\(user.password!)&role=\(user.role)"
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringCacheData
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
print("error: \(error)")
}
do {
guard let data = data else {
throw JSONError.NoData
}
guard let json = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? NSDictionary else {
throw JSONError.ConversionFailed
}
//do specific things
} catch let error as JSONError {
completionHandler(error.rawValue, nil)
} catch let error as NSError {
completionHandler(error.debugDescription, nil)
}
}
task.resume()
}
(The original code is a bit longer but i removed parts that had nothing to do with the actual posting of the data)
I have really no idea what i'm doing wrong, could be something small and stupid. Please help.
edit after input from @fiks
To be clear, the problem i am having is that I fill the "postString" the same way in the editUser method as I do in the saveUser method.(At least I think I do) However in the saveUser method the postString seems to be correctly passed through to the API (it creates a new user with the given values). The editUser method does not pass the values through.
If I put a console log on the server it shows all values are "undefined". To test if the postString was correct on the iOS part I printed both strings out. Both of them outputted email=user@test.com&password=test&role=admin
