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astropanic
Asked: 2017-09-28 22:07:57 +0800 CST

How check in nginx for query_string parameters?

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How I can write a condition in the nginx config testing if a q parameter was entered in the URL?

This doesn't work:

 if ($arg_q) {
   return 301 "/someurl";
 }

It catches URLs like

/search?entered_search=1&q=123

But it doesn't catch URLs like

/search?entered_search=1&q=
nginx

1 Answers

  1. Something like this might work. It says "if the query string contains the sequence 'q=' send a redirect". At least that's what I think it says, I'm not great with regex. I've tested it and it works, but there may be side effects depending what query strings you could get.

    if ($query_string ~ q=) {
  return 301 "https://www.example.com";
}

    This answer helped me work it out.

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