How to extract the filename from a URL in Elixir?

user_14272323 0
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Here's my problem I want to get the file name from the URL ex. https://randomWebsite.com/folder/filename.jpeg I got the expected result on javascript using this string.substring(string.lastIndexOf('/')+1). In Elixir I use this function String.slice(string, <first_value_from_binary.match>..String.length(string) ... :binary.match() only gets the first index of the first char that match the given letter... or is there any other solution getting the file name from the URL than this?

elixir url-parsing
2 Answers

You can parse the string into a URI using URI.parse/1, get its :path, and call Path.basename/1 to get the name of the last segment of the path:

iex(1)> "https://randomWebsite.com/folder/filename.jpeg" |> URI.parse() |> Map.fetch!(:path) |> Path.basename()
"filename.jpeg"
user_3206150

I think only need Path.basename/1:

"https://randomWebsite.com/folder/filename.jpeg"
|> Path.basename()
user_70412350
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