elixir - 如何删除 Phoenix Session？

Question

我正在通过Phoenix Guide on Sessions .它很好地解释了如何使用 put_session 将数据绑定(bind)到 session 。稍后使用 get_session 获取值但它没有告诉我如何删除用户的 session 。

从指南:

defmodule HelloPhoenix.PageController do
  use Phoenix.Controller

  def index(conn, _params) do
    conn = put_session(conn, :message, "new stuff we just set in the session")
    message = get_session(conn, :message)

    text conn, message
  end
end

Answer 1

在 Plug Docs 中找到它:

clear_session(conn)

Clears the entire session.

This function removes every key from the session, clearing the session.

Note that, even if clear_session/1 is used, the session is still sent to the client. If the session should be effectively dropped, configure_session/2 should be used with the :drop option set to true.

您可以在 SessionsController 中添加类似的内容:

def delete(conn, _) do
  conn
  |> clear_session()
  |> redirect(to: page_path(conn, :index))
end

并在您的 web/router.ex 中为此添加一条路线.