Remove string after last slash in Elixir

Question

I have a problem with removing everything after the last slash of URL in Elixir. For instance, I have URL:

http://localhost:4000/admins/new

I wanna change it to:

http://localhost:4000/admins

How can I do it?

Aleksei Matiushkin · Accepted Answer · 2020-11-19 08:18:54Z

1

The safest way would probably be to use URI.parse/1

uri = URI.parse("http://localhost:4000/admins/new")

%URI{uri |
  path:
    uri.path
    |> String.split("/")
    |> Enum.slice(0..-2)
    |> Enum.join("/")
}
|> URI.to_string()

#⇒ "http://localhost:4000/admins"

answered Nov 19, 2020 at 8:18

Aleksei Matiushkin

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Comments

Adam Millerchip · Accepted Answer · 2020-11-19 07:55:38Z

0

You can do it with a regular expression:

Regex.replace(~r{/[^/]+$}, "http://localhost:4000/admins/new", "")

Output:

"http://localhost:4000/admins"

answered Nov 19, 2020 at 7:55

Adam Millerchip

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