苦艾酒.插头不可用

Question

安装absinthe_plug后，我收到以下错误：

= Compilation error in file lib/kerrigan_api_web/router.ex ==
** (UndefinedFunctionError) function KerriganApiWeb.Absinthe.Plug.init/1 is undefined (module KerriganApiWeb.Absinthe.Plug is not available)

这是我的部门

{:phoenix, "~> 1.3.0"},
{:phoenix_pubsub, "~> 1.0"},
{:phoenix_ecto, "~> 3.2"},
{:postgrex, ">= 0.0.0"},
{:phoenix_html, "~> 2.10"},
{:phoenix_live_reload, "~> 1.0", only: :dev},
{:gettext, "~> 0.11"},
{:cowboy, "~> 1.0"},
{:poison, "~> 3.1"},
{:absinthe, "~> 1.3.0"},
{:absinthe_plug, "~> 1.3.0"},
{:absinthe_ecto, git: "https://github.com/absinthe-graphql/absinthe_ecto.git"},
{:faker, "~> 0.7"},

据我所知，我不需要添加任何其他内容。 我按照这里的简单步骤操作：

absinthe_slug

编辑：我的路由器

defmodule KerriganApiWeb.Router do
use KerriganApiWeb, :router
pipeline :browser do
plug :accepts, ["html"]
plug :fetch_session
plug :fetch_flash
plug :protect_from_forgery
plug :put_secure_browser_headers
end
pipeline :api do
plug :accepts, ["json"]
end
scope "/", KerriganApiWeb do
pipe_through :browser # Use the default browser stack
get "/", PageController, :index
resources "/hotsdata_user", UserController, except: [:new, :edit]
resources "/battletag_toonhandle_lookup", PlayerController, except: [:new, :edit]
forward "/graph", Absinthe.Plug, schema: KerriganApi.Schema
forward "/graphiql", Absinthe.Plug.GraphiQL, schema: KerriganApi.Schema
end
end

我添加了需要苦艾酒.Plug，但这不起作用

Answer 1

你正在向scope传递一个alias(KerriganApiWeb(，这会将别名附加到传递给内部路由声明函数的所有模块。这会在调用forward中将Absinthe.Plug转换为KerriganApiWeb.Absinthe.Plug，这不是您想要的。您希望模块Absinthe.Plug.有两种方法可以解决此问题：

1. 删除alias参数，并在所有需要它的路由声明函数中显式使用KerriganApiWeb。

   scope "/" do
   pipe_through :browser # Use the default browser stack
   get "/", KerriganApiWeb.PageController, :index
   resources "/hotsdata_user", KerriganApiWeb.UserController, except: [:new, :edit]
   resources "/battletag_toonhandle_lookup", KerriganApiWeb.PlayerController, except: [:new, :edit]
   forward "/graph", Absinthe.Plug, schema: KerriganApi.Schema
   forward "/graphiql", Absinthe.Plug.GraphiQL, schema: KerriganApi.Schema
   end
   

2. 创建一个具有相同路径和管道的新scope，并在其中声明forward路由：

   scope "/", KerriganApiWeb do
   pipe_through :browser # Use the default browser stack
   get "/", PageController, :index
   resources "/hotsdata_user", UserController, except: [:new, :edit]
   resources "/battletag_toonhandle_lookup", PlayerController, except: [:new, :edit]
   end
   scope "/" do
   forward "/graph", Absinthe.Plug, schema: KerriganApi.Schema
   forward "/graphiql", Absinthe.Plug.GraphiQL, schema: KerriganApi.Schema
   end
   

Phoenix 文档说第一个会增加应用程序的编译时间。即使不是这种情况，我也会选择第二个，因为我发现它更具可读性。

Answer 2

您可以将两个端点 "/graph" 和 "graphiql" 移出范围 "/"。

defmodule KerriganApiWeb.Router do
use KerriganApiWeb, :router
pipeline :browser do
plug :accepts, ["html"]
plug :fetch_session
plug :fetch_flash
plug :protect_from_forgery
plug :put_secure_browser_headers
end
pipeline :api do
plug :accepts, ["json"]
end
scope "/", KerriganApiWeb do
pipe_through :browser # Use the default browser stack
get "/", PageController, :index
resources "/hotsdata_user", UserController, except: [:new, :edit]
resources "/battletag_toonhandle_lookup", PlayerController, except: [:new, :edit]
end
forward "/graph", Absinthe.Plug, schema: KerriganApi.Schema
forward "/graphiql", Absinthe.Plug.GraphiQL, schema: KerriganApi.Schema, interface: :advanced
end