迁移Express.js 2到3，具体app.dynamicHelpers（）到app.locals.use？ [英] Migrating Express.js 2 to 3, specifically app.dynamicHelpers() to app.locals.use?

问题描述

将Express.js从版本2更新为3，并且以下对 app.dynamicHelpers（{..}）的调用在V3中不再存在：

Updated Express.js from version 2 to 3, and the following call to app.dynamicHelpers({..}) broke as it is no longer present in V3:

app.dynamicHelpers({

    request: function(req){
      return req
    },
    ...etc.
});

有一个迁移指南，这说明：

• app.dynamicHelpers（）（使用中间件+ res.locals）

• app.dynamicHelpers() (use middleware + res.locals)

但是，我很失望怎么做有没有更具体的如何迁移这个例子？

But I'm stumped how to do that. Is there a more concrete example of how to migrate that?

相关SO发布： nodejs express 3.0

推荐答案

我与会话有同样的问题。用户，只需了解app.use功能需要<配置部分 IN ，而不是之前的位置。

I had the same problem with session.user and just fixed it by understanding that the app.use function needs to be IN the configure part, not where it was before.

之前：

app.configure();
app.dynamicHelpers({
  user: function(req, res) {
    return req.session.user;
  }
});

之后：

app.configure(function(){
  //...
  app.use(function(req, res, next){
    res.locals.user = req.session.user;
    next();
  });
  //...
});

对于Flash，请查看 connect-flash

for Flash have a look at connect-flash

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