Validate valid URL in Elixir.

Here’s a quick snippet for you guys. Sometimes you need to know if a URL is valid or not.

A simple way to do this is by using the URI.parse/1 function.

defmodule MyApp.Helpers.UrlValidator do
  def valid_url(url) do
    case URI.parse(url) do
      %URI{scheme: nil} -> {:error, "No scheme"}
      %URI{host: nil} -> {:error, "No host"}
      _ -> {:ok, url}
    end
  end
end

To call it just do this:

MyApp.Helpers.UrlValidator.valid_url("https://google.com")

It’ll return either {:ok, "https://google.com"} or {:error, error_string} .

Hope this helps!