How to get the current url in phoenix framework

Question

I would like to know the current url with elixir / phoenix framework, how I can get this ?

Edit #1:

My nginx config file:

server {
        client_max_body_size 100M;

        listen  80;

        server_name *.example.dev *.example2.dev

        access_log  /usr/local/var/log/nginx/baby-access.log;
        error_log   /usr/local/var/log/nginx/baby-error.log;


        location / {
            proxy_pass http://127.0.0.1:4000;
        }
}

Code:

Atom.to_string(conn.scheme) <> "://" <> (Enum.into(conn.req_headers, %{}) |> Map.get("host")) <> conn.request_path

That example returns http://127.0.0.1:4000/, I would like to get http://www.example.dev/

I'm in development mode.

Answer 1

If you are interested only in the request path you can use conn.request_path which holds a value like "/users/1".

To get the URL including the host you can use

MyApp.Router.Helpers.url(conn) <> conn.request_path

which would return a result like "http://localhost:4000/users/1".

Answer 2

You can use Phoenix.Controller.current_url/1:

current_url(conn)

The endpoint configuration will define the URL:

config :my_app_web, MyAppWeb.Endpoint, url: [host: "example.com"]

Answer 3

I'm not sure which is the best method.

But maybe something like this as an illustration inside IndexController.

  def index(conn, params) do

    url_with_port = Atom.to_string(conn.scheme) <> "://" <>
                    conn.host <> ":" <> Integer.to_string(conn.port) <>
                    conn.request_path

    url =  Atom.to_string(conn.scheme) <> "://" <>
            conn.host <>
            conn.request_path

    url_phoenix_helper = Tester.Router.Helpers.index_url(conn, :index, params["path"]) # <-- This assumes it is the IndexController which maps to index_url/3

    url_from_endpoint_config = Atom.to_string(conn.scheme) <> "://" <>
                               Application.get_env(:my_app, MyApp.Endpoint)[:url][:host]  <>
                               conn.request_path

url_from_host_header =  Atom.to_string(conn.scheme) <> "://" <> 
                        (Enum.into(conn.req_headers, %{}) |> Map.get("host")) <> 
                        conn.request_path

    text = ~s"""

      url_with_port :: #{url_with_port}

      url :: #{url}

      url_phoenix_helper :: #{url_phoenix_helper}

      url_from_endpoint_config :: #{url_from_endpoint_config}

      url_from_host_header :: #{url_from_host_header}
    """

    text(conn, text)
  end