Express.js路由:可选的splat参数? [英] Express.js routing: optional splat param?

问题描述

我有一条看起来像这样的路线:

I have a route that looks like this:

app.all('/path/:namedParam/*splat?',function(req,res,next){
  if(!req.params.length){
    // do something when there is no splat
  } else {
    // do something with splat
  }
});

但是，这是行不通的-如果我呼叫path/foo/bar，它将击中路由，但是如果我呼叫path/foo，则不会.

however, this doesn't work - if I call path/foo/bar it hits the route, but if I call path/foo, it doesn't.

是否可以有一个可选的splat参数，或者我必须使用正则表达式来检测到这一点?

Is it possible to have an optional splat param, or do I have to use a regex to detect this?

修改:

更清楚一点，这是我要达到的要求:

to be clearer, here are the requirements I'm trying to achieve:

• 第一个和第二个参数是必需的
• 第一个参数是静态的，第二个是命名参数.
可以附加
• 任意数量的可选附加参数，并且仍然可以通过.

• the first and second params are required
• the first param is static, the second is a named param.
• any number of optional additional params can be appended and still hit the route.

推荐答案

这适用于Express 4上的/path和/path/foo，请注意*在?之前.

This works for /path and /path/foo on express 4, note the * before ?.

router.get('/path/:id*?', function(req, res, next) {
    res.render('page', { title: req.params.id });
});

这篇关于Express.js路由:可选的splat参数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！