如何将AFNetworking 2.0与反应性可可结合起来以将请求队列链接在一​​起？ [英] How-to combine AFNetworking 2.0 with reactive cocoa to chain a queue of requests together?

问题描述

我有几个相互依赖的请求，我必须按顺序调用吗？
有人可以给我一个使用AFNetworking和反应性可可的例子吗？

I have several Requests that depend on each other and must me called in sequence? Can somebody give me an example using AFNetworking and reactive cocoa?

例子：

1. LoginRequest（返回transactionId）


2. UpdateRequest包含transactionId的数据


3. UploadRequest jpeg具有transactionId


4. 带有transactionId的EndRequest

1. LoginRequest (return transactionId)
2. UpdateRequest post data with transactionId
3. UploadRequest jpeg with transactionId
4. EndRequest with transactionId

推荐答案

方法名称显然是虚构的，但应该为您提供对您编写的代码形式的理解：

The method names are clearly made-up but should give you a sense of the form of the code you'd write:

[[self 
    executeLoginRequest] 
    flattenMap:^(id transactionId) {
        return [[[self 
            executeUpdateRequest:data withTransactionId:transactionId] 
            then:^{
                return [self executeUploadRequest:jpeg withTransactionId:transactionId];
            }] 
            then:^{
                return [self endRequests:transactionId];
            }];
    }]

我们正在使用 -flattenMap：获取登录请求的结果，然后再发出更多请求。

We're using -flattenMap: to take the result of the login request and then make more requests off of it.

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