PROSAGA码农传奇-IOS-Swift Generic Callback

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  <BLOCKQUOTE>
    <P>
      因为会有很多API调用会返回DomainObjectWrapper。所以我想创建一个通用函数将帮助我避免冗余代码。谢谢
    </p>
  </BLOCKQUOTE>
  <P>
    如果是这样，那么你会使用
     <code>
      DataResponse<DomainObjectWrapper<T>>
    </code>
     代替
     <code>
      DataResponse<DomainObjectWrapper<MenuItemDO>>
    </code>
     在Alamofire调用的closure参数中：
  </p>
   <pre>
    <code>
      static func performPOST<T: DomainEntity>(action: Module, completion: @escaping (CallbackResponse, DomainObjectWrapper<T>?) -> Void) {

//logic implementation at first

switch action { 
          // this line
          self.alamofireManager.request(urlRequest, encoding: URLEncoding.default, headers: headers).responseObject { (response: DataResponse<DomainObjectWrapper<T>>) in // <----- this line
                var validateRequestResponse = RestHelper.validateRequestResponse(response: response)
                let responseObject = validateRequestResponse.responseObject

if validateRequestResponse.isSuccess {}
                else {
                    if let errorMessage = responseObject?.error {
                        validateRequestResponse.message = errorMessage
                    }
                    else if let warningMessage = responseObject?.warning {
                        validateRequestResponse.message = warningMessage
                    }
                }
                callbackResponse = RestHelper.bindValidateRequestResponse(validateRequestResponse: validateRequestResponse)
                completion(callbackResponse, responseObject)
            }
     }
}

</code>
  </pre>
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