Phoenix 1.4 升级 - (FunctionClauseError) Phoenix.Socket.terminate/2 中没有匹配的函数子句

Question

我最近将我的 Phoenix 应用程序从 1.3 升级到了 1.4。

一切都很好，除了当我离开页面时出现以下错误：

[error] GenServer #PID<0.509.0> terminating
** (FunctionClauseError) no function clause matching in Phoenix.Socket.__terminate__/2
    (phoenix) lib/phoenix/socket.ex:544: Phoenix.Socket.__terminate__({:shutdown, :closed}, %Phoenix.Socket{assigns: %{}, channel: MhrWeb.SearchChannel, channel_pid: #PID<0.509.0>, endpoint: MhrWeb.Endpoint, handler: MhrWeb.UserSocket, id: nil, join_ref: "2", joined: true, private: %{log_handle_in: :debug, log_join: :info}, pubsub_server: Mhr.PubSub, ref: nil, serializer: Phoenix.Socket.V2.JSONSerializer, topic: "search:query", transport: :websocket, transport_pid: #PID<0.497.0>})
    (stdlib) gen_server.erl:673: :gen_server.try_terminate/3
    (stdlib) gen_server.erl:858: :gen_server.terminate/10
    (stdlib) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Last message: {:"$gen_cast", :close}
State: %Phoenix.Socket{assigns: %{}, channel: MhrWeb.SearchChannel, channel_pid: #PID<0.509.0>, endpoint: MhrWeb.Endpoint, handler: MhrWeb.UserSocket, id: nil, join_ref: "2", joined: true, private: %{log_handle_in: :debug, log_join: :info}, pubsub_server: Mhr.PubSub, ref: nil, serializer: Phoenix.Socket.V2.JSONSerializer, topic: "search:query", transport: :websocket, transport_pid: #PID<0.497.0>}

我已经尝试在 user_socket.ex 和处理特定主题的 search_channel.ex 中实施终止，但它没有改变任何东西。

非常感谢任何见解！

Answer 1

看起来 \__terminate__ 函数签名与传递给它的内容不匹配。

从 the file 开始，它需要调用中缺少的 :inverse_channels 字段。

因此，如果您尝试在调用中（在 iex 中）添加一个 channels_inverse（下面的第二行）字段，并在 pid0 变量中添加一个示例 PID

Phoenix.Socket.__terminate__({:shutdown, :closed}, {
  %{channels_inverse: %{}}, # this is dummy data added!!

  %Phoenix.Socket{assigns: %{}, channel: MhrWeb.SearchChannel, 
    channel_pid: pid0, endpoint: MhrWeb.Endpoint, handler: MhrWeb.UserSocket, 
    id: nil, join_ref: "2", joined: true, private: %{log_handle_in: :debug, log_join: :info}, 
    pubsub_server: Mhr.PubSub, ref: nil, serializer: Phoenix.Socket.V2.JSONSerializer, 
    topic: "search:query", transport: :websocket, transport_pid: pid0}
})

函数子句错误消失了。

因此，您必须跟踪这个没有 %{channels_inverse: %{}} 的函数调用的来源。也许你的套接字相关 javascript 文件没有更新到 phoenix 1.4？

Answer 2

弄清楚了（这很愚蠢）...在我需要删除的每个频道模块中 use Phoenix.Socket :/

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