elixir - web/router.ex 中嵌套作用域定义的行为

Question

文档根本没有提到这一点。是否允许嵌套范围定义，如果允许，web/router.ex 中以下内容的定义行为是什么:

scope "/:locale", MyApp do
  pipe_through [:browser, :locale]

  scope "/auth", MyApp do
    pipe_through [:auth]

    get "/", PageController, :dummy
  end

  get "/", PageController, :dummy
end

管道链，即/:locale/auth 请求路由是否通过 :browser、:locale 和 :auth？有什么问题吗？

Answer 1

是的，允许定义范围，管道由嵌套范围继承。 Phoenix 仓库 contains tests for pipelines in nested scopes其中断言所有 pipe_through父作用域中的路由由子作用域中的路由继承。

scope "/browser" do
  pipe_through :browser
  get "/root", SampleController, :index

  scope "/api" do
    pipe_through :api
    get "/root", SampleController, :index
  end
end

# ...

test "invokes pipelines in a nested scope" do
  conn = call(Router, :get, "/browser/api/root")
  assert conn.private[:phoenix_pipelines] == [:browser, :api]
  assert conn.assigns[:stack] == "api"
end