Alamofire 3 Custom Encoding To Alamofire 4 Custom Encoding

Question

I have method writing in Alamofire 3 with customParameterEncoding. This custom encoding just replaces "[]=" with "=" in queryString and returns it.

Alamofire.request(.GET, SearchURL, parameters: params, encoding: customEncoding, headers: headers).validate().responseJSON {
            response in
            switch response.result {
            case .success:
                print("success")
                break
            case .failure(let error):
                print("Error: " + error.localizedDescription)
                break
            }
        }

and custom encoding parameter

let customEncoding =  ParameterEncoding.Custom { requestConvertible, parameters in
    let (mutableRequest, error) = ParameterEncoding.URL.encode(requestConvertible, parameters: parameters)
    mutableRequest.URL = NSURL(string: mutableRequest.URLString.stringByReplacingOccurrencesOfString("%5B%5D=", withString: "="))
    return (mutableRequest, error)
}

How to convert customEncoding to Alamofire 4 version?

Answer 1

Just separating structs for GET and POST also works.

http://matsue.github.io/post/how-to-remove-square-brackets-with-alamofire/

Alamofire 4 with Swift 3

// Remove square brackets for GET request
struct CustomGetEncoding: ParameterEncoding {
    func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
        var request = try URLEncoding().encode(urlRequest, with: parameters)
        request.url = URL(string: request.url!.absoluteString.replacingOccurrences(of: "%5B%5D=", with: "="))
        return request
    }
}

// Remove square brackets for POST request
struct CustomPostEncoding: ParameterEncoding {
    func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
        var request = try URLEncoding().encode(urlRequest, with: parameters)
        let httpBody = NSString(data: request.httpBody!, encoding: String.Encoding.utf8.rawValue)!
        request.httpBody = httpBody.replacingOccurrences(of: "%5B%5D=", with: "=").data(using: .utf8)
        return request
    }
}

// Use structs for requests 
Alamofire.request("http://example.com", method: .get, parameters: ["foo": ["bar1", "bar2"]], encoding: CustomGetEncoding())
Alamofire.request("http://example.com", method: .post, parameters: ["foo": ["bar1", "bar2"]], encoding: CustomPostEncoding())

Answer 2

In Alamofire 4.0 you should use ParameterEncoding.

struct CustomEncoding: ParameterEncoding {
    func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
        var request = try! URLEncoding().encode(urlRequest, with: parameters)
        let urlString = request.url?.absoluteString.replacingOccurrences(of: "%5B%5D=", with: "=")
        request.url = URL(string: urlString!)
        return request
    }
}