从 Sails.JS 发出 socket.io 事件并使用 Sails.JS 框架在服务器上处理它 [英] Emitting socket.io event from Sails.JS and handling it on server using Sails.JS skeleton

问题描述

我在理解从 Sails.js 客户端控制器发送 socket.io 事件并在服务器端控制器中处理它们的概念时遇到问题.首先我下载了​​使用npm的SailsJS项目骨架，结构如下:

I have a problem in understanding the concept of sending socket.io events from Sails.js client side controller and handling them in server-side controllers. First of all, I have downloaded the SailsJS project skeleton using npm and the structure as follows:

项目:

api
--adapters
--controllers
----server_userController.js
--models
--polices
--services

assets
--[styles, views, images, bower_components, and etc]
--js
----controllers
------userController.js
----app.js
----sails.io.js
----socket.io.js
config
node_modules
views

我在assets/js/controllers/server_userController.js"中写了以下内容:

I wrote the following in "assets/js/controllers/server_userController.js":

socket.emit('getUser', {
    _id: 10
});

现在，如何指定哪个服务器端控制器负责处理此事件，以及如何指定?我希望在api/controllers/server_userController.js"中接收此事件.所以，这样的东西将在控制器中:

Now, how to specify which server-side controller is responsible for handling this event, and how? I want this event to be received in "api/controllers/server_userController.js". So, something like this will be in the controller:

module.exports = {
  //Handling socket request here
  //Emitting socket request
};

提前致谢

推荐答案

如果您要做的只是通过套接字运行 Sails 控制器操作，那么您不需要发出任何东西根本.Sails 的部分魅力在于它可以通过套接字路由常规的、HTTP 样式的请求.所以如果你有一个控制器 /api/controllers/FooController.js 像:

If all you're trying to do is run a Sails controller action via sockets, then you don't need to emit anything at all. Part of Sails' charm is that it can route regular, HTTP-style requests over sockets. So if you have a controller /api/controllers/FooController.js like:

module.exports = {

    bar: function (req, res) {

        // Note, you can check whether this was a socket request
        // with req.isSocket, and if so access the connecting
        // socket with req.socket

        res.json({"message": "Hello!"});

    }

}

并且您在客户端应用程序中包含捆绑的 sails.io.js 文件，然后您可以通过以下方式访问该操作:

and you include the bundled sails.io.js file in your client-side app, then you can access that action via:

socket.get('/foo/bar', function(data) {
    // data will contain {message:"hello"}
}

注意:如果您使用的是 Sails v0.10.x 中包含的较新版本的 sails.io.js，它是 io.socket.get.

如果你真的想在服务器上捕获套接字事件，注册它们的最佳位置是在你的 /config/socket.js 文件中，在 onConnect 方法中:

If you really want to catch socket events on the server, the best place to register them is in your /config/socket.js file, in the onConnect method:

onConnect: function (socket, session) {

    socket.on('some_event', function(data) {
        // handle event here
    });

}

这比将事件处理程序放在控制器中要好，因为只要控制器操作运行，它就会再次绑定事件，并且您会看到回调被多次运行.

This is better than putting the event handlers in a controller, because any time that controller action ran it would bind the event again, and you'd see the callback being run multiple times.

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