Alamofire 2.0 and Swift 2 - Header is not working. See how to fix it

Question

When I upgraded my project to swift 2 with Alamofire 2 headers stopped working without any errors in code. The reason is that he

Answer 1

You can fix the header problem by sending headers in requests.

// login with Alamofire 2.0 and Swift 2.0 - WITH HEADER
func loginAlamofire_2(username:String) {
    manager.request(.POST, "login_url", parameters: ["username" : username], encoding: ParameterEncoding.JSON, headers: ["Authorization": "yourToken"])
        .response{ (request, response, data, error) -> Void in
            if error != nil{
                print("error!")
            } else {
                print("welcome")
            }
    }
}