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我正在關注Phoenix Guide on Plugs以創建我自己的Module Plug
,該會話從會話加載當前用戶。當使用插頭模塊時,@user
未被分配,但在router.ex
中稱爲私人功能時正常工作。從管道插件中調用時,Plug.Conn.assign不工作
這是我web/router
:
defmodule MyApp.Router do
use MyApp.Web, :router
pipeline :browser do
plug :accepts, ["html"]
plug :fetch_session
plug :fetch_flash
plug :protect_from_forgery
plug MyApp.Plugs.User
end
# Scopes and Routes...
end
這是我的模塊(web/plugs/user.ex
):
defmodule MyApp.Plugs.User do
import Plug.Conn
def init(default), do: default
def call(conn, default) do
user = %{
id: get_session(conn, :user_id),
username: get_session(conn, :username)
}
assign(conn, :user, user)
IO.inspect conn
end
end
我試圖檢查,看看是否真的是被分配,但它不是:
%Plug.Conn{adapter: {Plug.Adapters.Cowboy.Conn, :...}, assigns: %{},
before_send: [#Function<1.75757453/1 in Plug.CSRFProtection.call/2>,
#Function<1.30521811/1 in Phoenix.Controller.fetch_flash/2>,
#Function<0.39713025/1 in Plug.Session.before_send/2>,
#Function<1.7608073/1 in Plug.Logger.call/2>,
#Function<0.72065156/1 in Phoenix.LiveReloader.before_send_inject_reloader/1>],
body_params: %{},
cookies: ....
我明白了......我想我應該在我進入鳳凰城之前獲得我的Elixir基礎知識。 – Sheharyar
還要注意'IO.inspect'返回它檢查的值,所以'assign(conn,:user,user)|> IO.inspect'也會有效 –