【发布时间】：2015-12-21 16:53:07
【问题描述】：
我正在关注 Programming Phoenix 这本书，正在研究实现登录/注销经过身份验证的用户的部分，并且收到一个我不知道该怎么处理的错误：
mix phoenix.server
Compiled lib/rumbl.ex
Compiled lib/rumbl/repo.ex
Compiled web/channels/user_socket.ex
Compiled web/web.ex
Compiled web/models/user.ex
== Compilation error on file web/router.ex ==
** (UndefinedFunctionError) undefined function: Rumbl.Auth.init/1 (module Rumbl.Auth is not available)
Rumbl.Auth.init([repo: Rumbl.Repo])
(plug) lib/plug/builder.ex:198: Plug.Builder.init_module_plug/3
(plug) lib/plug/builder.ex:186: anonymous fn/4 in Plug.Builder.compile/3
(elixir) lib/enum.ex:1387: Enum."-reduce/3-lists^foldl/2-0-"/3
(plug) lib/plug/builder.ex:186: Plug.Builder.compile/3
web/router.ex:4: (module)
(stdlib) erl_eval.erl:669: :erl_eval.do_apply/6
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file lib/rumbl/endpoint.ex ==
** (UndefinedFunctionError) undefined function: Rumbl.Router.init/1 (module Rumbl.Router is not available)
Rumbl.Router.init([])
(plug) lib/plug/builder.ex:198: Plug.Builder.init_module_plug/3
(plug) lib/plug/builder.ex:186: anonymous fn/4 in Plug.Builder.compile/3
(elixir) lib/enum.ex:1387: Enum."-reduce/3-lists^foldl/2-0-"/3
(plug) lib/plug/builder.ex:186: Plug.Builder.compile/3
(phoenix) expanding macro: Phoenix.Endpoint.__before_compile__/1
lib/rumbl/endpoint.ex:1: Rumbl.Endpoint (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/views/user_view.ex ==
** (CompileError) web/views/user_view.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/views/user_view.ex:2: Rumbl.UserView (module)
(elixir) expanding macro: Kernel.use/2
web/views/user_view.ex:2: Rumbl.UserView (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/views/error_view.ex ==
** (CompileError) web/views/error_view.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/views/error_view.ex:2: Rumbl.ErrorView (module)
(elixir) expanding macro: Kernel.use/2
web/views/error_view.ex:2: Rumbl.ErrorView (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/controllers/auth.ex ==
** (CompileError) web/controllers/auth.ex:3: module Comeonin.Bcypt is not loaded and could not be found
(stdlib) erl_eval.erl:669: :erl_eval.do_apply/6
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/controllers/user_controller.ex ==
** (CompileError) web/controllers/user_controller.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/controllers/user_controller.ex:2: Rumbl.UserController (module)
(elixir) expanding macro: Kernel.use/2
web/controllers/user_controller.ex:2: Rumbl.UserController (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/controllers/page_controller.ex ==
** (CompileError) web/controllers/page_controller.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/controllers/page_controller.ex:2: Rumbl.PageController (module)
(elixir) expanding macro: Kernel.use/2
web/controllers/page_controller.ex:2: Rumbl.PageController (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/views/session_view.ex ==
** (CompileError) web/views/session_view.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/views/session_view.ex:2: Rumbl.SessionView (module)
(elixir) expanding macro: Kernel.use/2
web/views/session_view.ex:2: Rumbl.SessionView (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/views/page_view.ex ==
** (CompileError) web/views/page_view.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/views/page_view.ex:2: Rumbl.PageView (module)
(elixir) expanding macro: Kernel.use/2
web/views/page_view.ex:2: Rumbl.PageView (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/views/layout_view.ex ==
** (CompileError) web/views/layout_view.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/views/layout_view.ex:2: Rumbl.LayoutView (module)
(elixir) expanding macro: Kernel.use/2
web/views/layout_view.ex:2: Rumbl.LayoutView (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
== Compilation error on file web/controllers/session_controller.ex ==
** (CompileError) web/controllers/session_controller.ex:2: module Rumbl.Router.Helpers is not loaded and could not be found
expanding macro: Rumbl.Web.__using__/1
web/controllers/session_controller.ex:2: Rumbl.SessionController (module)
(elixir) expanding macro: Kernel.use/2
web/controllers/session_controller.ex:2: Rumbl.SessionController (module)
(elixir) lib/kernel/parallel_compiler.ex:100: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/8
我已经对照书检查并再次检查了我的代码，但什么也看不到。
我的项目文件在这里：https://github.com/bordeltabernacle/learning-phoenix/tree/master/rumbl
据我所知Rumbl.Auth.init 函数存在于auth.ex 控制器文件中，我不确定Rumbl.Router.Helpers 文件是什么或如何加载它。当我删除 router.ex 文件中唯一的新行时，由于应用程序正在运行，我得到了同样的错误。
恐怕我还不够了解，无法自己解决此问题。
【问题讨论】：