This is how it's done in express.js:
```
app.param('id', function(req, res, next, value, name) {
if (value.match(/^\d+$/)) {
next()
} else {
next('route')
}
})
app.get('/users/:id', function(req, res, id) { ... })
```
Do something similar. There is no need to add anything to a route, because
the name of the param should already imply the type.
If you write "name", it is string, right? Anybody who reads the code will
understand that without any explicit "[string]" garbage attached to it.
On Monday, November 4, 2013 10:37:28 PM UTC+4, Simon wrote:
>
> In my URL routing (express/sinatra-style), I'd like to enable optional
> parameter "filters" (like int, hex) while keeping syntax familiar and
> simple. The typical syntax for a routing library might look something like:
>
> app.get('/users/:id', function(req, res, id) { ... });
>
> I'd like to introduce a syntax for catching only numeric ids so we could
> have another route for users by name for instance.
>
> app.get('/users/:id[int]', function(req, res, id) { ... });
> app.get('/users/:name', function(req, res, username) { ... });
>
> There doesn't seem to be a convention for this, so I've been considering
> the following:
>
> '/users/:id[int]'
> '/users/:id(int)'
> '/users/:id:int'
> '/users/:id=int'
>
> Any feedback on what's a good way to go that will be simple and obvious to
> someone reading the code? If a well-known library is already doing
> something like this I'll go with whatever the community is using. Votes
> welcome..
>
>
>
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