CODEWITHSUNDEEP
javascriptregexnode.jsexpress
JR Galia
JR Galia

Reputation: 17269

RegEx in ExpressJS Route

In ExpressJS, how to right the following in one route using RegEx?

app.get('/blog', blog.list);
app.get('/blog/p/:page?', blog.list);

Upvotes: 3

Views: 4761

Answers (2)

Leonid Beschastny
Leonid Beschastny

Reputation: 51460

What the point of using RegExp here? Express patterns is simpler, yet almost as powerful as regular expressions:

app.get('/blog(?:/p/:page([0-9]+)?)?', blog.list);

This route will match all of the following urls:

  • /blog
  • /blog/
  • /blog/p
  • /blog/p/
  • /blog/p/123

In blog.list controller req.params.page will contain page number or will be undefined if it wasn't supplied.

Upvotes: 8

max
max

Reputation: 6069

It seems like there might be compelling reasons to make these separate routes, but I'm not sure what you are doing with your app.

app.get(/^\/blog(?:\/p\/([0-9]+)?)?/, blog.list);

req.params[0] should be "20" at the route /blog/p/20, with req.params as null for /blog/p/ or /blog/ but with with both as functional routes.

Upvotes: 0

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