Phoenix error: module not loaded/not available

Question

我正在阅读《Programming Phoenix》这本书，正在研究实现记录 in/out 一个经过身份验证的用户的部分，但我收到一个错误，我不知道该如何处理：

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仔细检查了我的代码，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 函数在 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。
恐怕我还不够了解自己解决这个问题。

Answer 1

我认为你应该尝试清理 deps，然后在启动服务器之前再次获取和编译

所以试试

mix deps.clean --all
mix deps.get
mix deps.compile
mix phoenix.server

祝你好运

Answer 2

你打错字了https://github.com/bordeltabernacle/learning-phoenix/blob/master/rumbl/web/controllers/auth.ex

import Comeonin.Bcypt, only: [checkpw: 2]

应该是

import Comeonin.Bcrypt, only: [checkpw: 2]

Answer 3

您也可以删除 _build 目录并使用 mix phoenix.server (Phoenix 1.2) 或 mix phx.server (Phoenix 1.3) 重新启动您的服务器。

这样做将第一次从头开始获取所有依赖项。我更喜欢这种方法，因为我不需要键入一堆命令，我只需要删除一个目录并重新运行我终端上的最近命令..这是mix phx.server。是啊，我很懒。

祝你好运。

Answer 4

在我的例子中，发生这个错误是因为我不小心在 test 目录而不是 lib 目录中创建了一个模块。将它移动到 lib 目录修复它。

Answer 5

在我的伞式项目中，我在 tests 目录中添加了一个新的 support 目录，并且我的测试无法访问其中的 .ex 模块。

默认情况下，mix 仅在 lib 目录中查找要编译的文件。您可以通过在 mix.exs.

中将 elixirc_paths 添加到 project 来添加另一个目录

Phoenix error: module not loaded/not available

Phoenix error: module not loaded/not available

elixir

phoenix-framework