Get token from string with elixir

Question

I have string that looks like this:

link = "<a href=\"http://localhost:5000/confirm/SFMyNTY.g3QAAAACZAAEZGF0YWIAAAsMZAAGc2lnbmVkbgYASDp-jVwB.HqUsytlpKq7h9qEQyjABS1Xv4sgwNFClB-asLYUGfyA\">Potwierdź swoje konto.</a>"

How can I get from token that is after confirm/?

Dogbert · Accepted Answer · 2017-06-09 15:51:13Z

1

You can do it with regular expressions like this:

link = "<a href=\"http://localhost:5000/confirm/SFMyNTY.g3QAAAACZAAEZGF0YWIAAAsMZAAGc2lnbmVkbgYASDp-jVwB.HqUsytlpKq7h9qEQyjABS1Xv4sgwNFClB-asLYUGfyA\">Potwierdź swoje konto.</a>"

[[_, token]] = Regex.scan(~r/confirm\/(.*?)"/, link)
IO.puts token

Output:

SFMyNTY.g3QAAAACZAAEZGF0YWIAAAsMZAAGc2lnbmVkbgYASDp-jVwB.HqUsytlpKq7h9qEQyjABS1Xv4sgwNFClB-asLYUGfyA

This will work as long as your HTML structure remains exactly the same. Regex cannot parse arbitrary HTML, as you probably know already.

answered Jun 9, 2017 at 15:51

Dogbert

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