我正在尝试为Alamofire 4.0定义自定义模型序列化。到目前为止,我正在关注responseJson
和朋友们使用的模型。具体来说,到目前为止我所拥有的是:
extension Alamofire.Request {
public static func serializeResponseModel<T:ModelObject>(response:HTTPURLResponse?, data:Data?, error:Error?) -> Alamofire.Result<T> {
switch serializeResponseJSON(options: [], response: response, data: data, error: error) {
case .success(let jsonObject):
do {
return .success(try T(json:jsonObject as! JSONObject))
}
catch {
return .failure(error)
}
case .failure(let error):
return .failure(error)
}
}
}
extension Alamofire.DataRequest {
public static func serializeResponseModel<T:ModelObject>() -> DataResponseSerializer<T> {
return DataResponseSerializer { _, response, data, error in
return Request.serializeResponseConcierge(response: response, data: data, error: error)
}
}
@discardableResult
public func responseModel<T:ModelObject>(queue: DispatchQueue? = nil, completionHandler: @escaping (DataResponse<T>) -> Void) -> Self
{
return response(
queue: queue,
responseSerializer: DataRequest.serializeResponseModel(),
completionHandler: completionHandler
)
}
}
不幸的是,框架实现得有些糟糕,而且return response(
行找到response
属性(在Request
中定义)而不是相应的response
方法(在DataRequest
),这导致编译错误:
Cannot call value of non-function type 'HTTPURLResponse?'
我在这里错过了什么允许它在responseJson
情况下工作,但不是在我的情况下?
答案 0 :(得分:0)
显然问题是由于过度泛化而导致编译器无法为DataRequest.serializeResponseModel()
生成适当的类型当我将responseModel
更改为以下内容并指定了相应的类型时,事情按预期工作:
@discardableResult
public func responseModel<T:ModelObject>(queue: DispatchQueue? = nil, completionHandler: @escaping (DataResponse<T>) -> Void) -> Self
{
return response(
queue: queue,
responseSerializer: DataRequest.modelResponseSerializer() as DataResponseSerializer<T>,
completionHandler: completionHandler
)
}