Alamofire+RxSwiftObjectMapper.swift

extension Alamofire.Request {
    
    func processMap<N>(map:(AnyObject)->N?) -> Observable<N> {
        
        return Observable.create { observer in
            
            self.responseData { response in
                let result = response.result
                if result.isSuccess {
                    guard let o = map(result.value!) else{
                        observer.on(Event.Error(ObjectMapError.MapError(result.value)))
                        return
                    }
                    observer.on(Event.Next(o))
                    observer.on(Event.Completed)
                }else{
                    observer.on(Event.Error(result.error!))
                }
            }

            return AnonymousDisposable{
                self.cancel()
            }
        }
    }
    
    func rx_responseArray<T:Mappable>(type:T.Type) -> Observable<[T]> {
        return self.processMap{ Mapper<T>().mapArray($0)}
    }
    
    func rx_responseObject<T:Mappable>(type:T.Type) -> Observable<T> {
        return self.processMap{ Mapper<T>().map($0) }
    }
}