Ruby match first occurrence of string for a gsub replacement

Question

I have a string let's say http://someUrul.com/someController/SOmeAction?SomeQS=http://someOtherUrl

and I want to replace the first http with https, but not the second, so I end up with https://someUrul.com/someController/SOmeAction?SomeQS=http://someOtherUrl

How can I accomplish this with a simple gsub? The following replaces both.

request.url.gsub(/http:/, "https:")

score 71 · Accepted Answer · edited Jul 21 '11 at 21:44

71

Use sub, not gsub. gsub is global, sub isn't.

edited Jul 21 '11 at 21:44

mu is too short

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answered Jul 21 '11 at 20:22

HRÓÐÓLFR

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Thank you! I'm...just getting started with RoR, and the language/framework is still a little uncomfortable...I'm a C#/JS guy. – ar3 Jul 21 '11 at 20:25
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At least you've seen the light :D – HRÓÐÓLFR Jul 21 '11 at 20:39

Ruby match first occurrence of string for a gsub replacement

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