Render static html page in a controller

Question

Is there a way to read and render a static html file located at another part on server in the controller ? I am not looking to redirect or serve this page via static pages functionality.

Answer 1

You should use Plug.Conn.send_file/5 for this. This function will send the contents of the file more efficiently than reading the whole file into memory and then sending it using Phoenix.Controller.html/2:

conn
|> put_resp_header("content-type", "text/html; charset=utf-8")
|> Plug.Conn.send_file(200, "/path/to/html")

Note that I had to manually add the content-type header to get the same behavior as Phoenix.Controller.html/2.

Answer 2

You can use the Phoenix.Controller.html/2 function for send custom html content. Read the the file with File.read!/2 and send the content to the client.

def index(conn, _params) do
  html(conn, File.read!("path/to/file.html"))
end

Hope this helps.