Validation on Routes

[Nikhil Goyal]

I have a route that is something like this


match '/:token' => 'users#new'


This token is 8 digit alphanumeric. I want to add validations on it so
that it matches with the route only when there are 8 digits present in
token.

How can I do that.

[Everaldo Gomes]

Hi!

Try this:

match ':/:token' => 'users#new' , constraints => {  :token => /[a-zA-Z0-9]{8}/ }

There is \w in regexp that means letter, number and underscore (accordlying rubular.com) , but I don't know if your token accepts underscores.

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[Nikhil Goyal]

On Nov 1, 2:57 am, Everaldo Gomes <everaldo.go...@gmail.com> wrote:
> Hi!
>
> Try this:
>
> match ':/:token' => 'users#new' , constraints => {  :token =>
> /[a-zA-Z0-9]{8}/ }
>
> There is \w in regexp that means letter, number and underscore (accordlying
> rubular.com) , but I don't know if your token accepts underscores.
>

No there are no underscores. only alphabets and numbers.

[Everaldo Gomes]

So, try using /[a-zA-Z0-9]/ as your constraint. I can't remember a shortcut for alphanumeric, if there is one.