Post Requests in Alamofire Parameter Encoding Returning Get Responses

POST requests in Alamofire Parameter Encoding returning GET responses

Turned out that the problem was a combination of the command that Alamofire.request() generates (curl -i -X POST...) and how my Apache was handling trailing slashes of the URL. So when I tried to POST "http://192.168.0.106/users" I was being redirect (301) to a GET "http://192.168.0.106/users".

So I had to include this line of command in my .htaccess:

# Redirect Trailing Slashes...
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteRule ^(.*)/$ /$1 [L,R=301]

and change my Router's code, always appending a trailing slash at the end:

var route: String {

        switch self{

        case .Users:
            return ""
        case .ReadUser(let userID):
            return "/\(userID)/"
        case .CreateUser:
            return "/"
        case .UpdateUser(let userID):
            return "/\(userID)/"
        case .DestroyUser(let userID):
            return "/\(userID)/"
        }

    }

Alamofire post request:

There are many ways to implement the requests using Alamofire, this is a simple example:

First, do you have to create the parameters, URL from your API and headers:

let parameters = [
    "username": "foo",
    "password": "123456"
]

let url = "https://httpbin.org/post"

static private var headers: HTTPHeaders {
        get {
            return [
               "Authorization" : "Bearer \(Session.current.bearerToken ?? "")"
            ]
        }
    }

So you call the function from Alamofire and pass your data:

Alamofire.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: headers).responseJSON {
            response in
            switch (response.result) {
            case .success:
                print(response)
                break
            case .failure:
                print(Error.self)
            }
        }
}

:)

Swift Alamofire POST request becomes GET

I had the same problem, you just have to put / at the end of URL. Problem is in Alamofire, I think. It works weird with normal server redirections from www.domain.com/something to www.domain.com/something/

How to write alamofire request function that returns the response?

You can pass a closure as a parameter to the function like this

func callAPI(params: Dictionary<String, Any>, url: String, completion:@escaping (((Dictionary<String,Any>?) -> Void))) -> Void {
    let hud = MBProgressHUD.showAdded(to: self.view, animated: true)
    hud.contentColor = UIColor.red
    Alamofire.request(url, method: .post, parameters: params, encoding: JSONEncoding(options: []), headers: nil).responseJSON { response in
        hud.hide(animated: true)
        switch response.result{
        case .success:
            if let resultJson = response.result.value as? Dictionary<String,Any>{
                print(resultJson)
                completion(resultJson)
                // Success
            }
        case .failure(let error):
            print(error)
            completion(nil)
            //Failed
        }
    }
}

Call the function with the closure

callAPI(params: [:], url: "") { resultJson in
    guard let resultJson = resultJson else {
        return
    }
    print(resultJson)
}

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