If nCapture match do something in nginx [Regex]

Question

I post here even if its probably more a SF question I think it could interest some of you.

Is there a way to tell with Regex to nginx if, for example, the 3rd catpure groupe is match redirect to that else to that ?

Example : We have 2 types of URL :

circuit/asie/indonesie/denpasar-bali/ or circuit/asie/indonesie/

and we want to redirect to

asie/indonesie/denpasar-bali/ or asie/indonesie/

Let say we have this Regex : \w+\/([^\/]+)\/([^\/]+)\/?([^\/]+)?\/

How do you say if match the first case redirect to the first url and match the second redirect to the second ?

Does something like this could work ?

rewrite \w+/([^/]+)/([^/]+)/?([^/]+)?/ /$1/$2/?$3?/ permanent;

Why you want it this hard way? How about `rewrite ^/circuit(/asie/.+)$ $1 redirect;`? — Alexey Ten, Apr 01 '16 at 08:43
Check this regex :- https://regex101.com/r/pB6qJ4/2 Retrieve the first capturing group as `$1` — rock321987, Apr 01 '16 at 09:25

score 0 · Answer 1 · edited May 23 '17 at 11:50

0

You can try this

rewrite ^(?:.*?/)(.+)$ $1 redirect;

For capturing after n th group, you can use

^(?:(?:.*?\/){n})(.+)$

If you want to use allowed characters in URL name, you can find the answer here

edited May 23 '17 at 11:50

Community

answered Apr 01 '16 at 09:42

rock321987

I goes for this -> `\w+(\/\b(asie|europe|afrique|[Aa]meriques|amerique\-du\-nord|amerique\-du\-sud)\b.+)` But thanks :) – Baldráni Apr 01 '16 at 09:46
@Baldráni If you have only `alphabets` and `predefined signs` then its more simple – rock321987 Apr 01 '16 at 09:50

1 Answers1