如何使用 Milia 在 ActionCable 中设置租户以实现多租户 [英] How to Set Tenant in ActionCable with Milia for Multi-Tenancy

问题描述

我在尝试使用 Milia 设置 ActionCable 时遇到问题.我正在关注 Chris Oliver 的 ActionCable 群聊片段，并使用 Milia 在我的应用程序中进行设置.在 Internet 上进行了大量搜索之后，我的问题似乎与在将 Apartment gem 用于多租户时设置 ActionCable 时出现的问题类似.但是，我为 Apartment 找到的相关修复似乎不适用于 Milia.

I am running into problems trying to setup ActionCable with Milia. I was following Chris Oliver's ActionCable Group Chat segments and setting it up in my app using Milia. After a lot of searching on the Internet, my issue seems to be similar ones that arise with setting up ActionCable when you are using the Apartment gem for multi-tenancy as well. But, the related fixes I found for Apartment do not seem to apply to Milia.

我目前收到以下错误.

无法执行来自 ({"command"=>"subscribe", "identifier"=>"{\"channel\":\"ChatroomsChannel\"}"}) [NoMethodError - 未定义的方法 chatrooms' for nil:NilClass]:/home/ubuntu/workspace/rehabrx2/app/channels/chatrooms_channel.rb:4:insubscribed' |/usr/local/rvm/gems/ruby-2.4.0/gems/actioncable-5.1.4/lib/action_cable/channel/base.rb:177:in block in subscribe_to_channel' |/usr/local/rvm/gems/ruby-2.4.0/gems/activesupport-5.1.4/lib/active_support/callbacks.rb:108:inblock in run_callbacks' |/usr/local/rvm/gems/ruby-2.4.0/gems/activesupport-5.1.4/lib/active_support/execution_wrapper.rb:81:in wrap' |/usr/local/rvm/gems/ruby-2.4.0/gems/actioncable-5.1.4/lib/action_cable/engine.rb:66:in块(3级)在'

Could not execute command from ({"command"=>"subscribe", "identifier"=>"{\"channel\":\"ChatroomsChannel\"}"}) [NoMethodError - undefined method chatrooms' for nil:NilClass]: /home/ubuntu/workspace/rehabrx2/app/channels/chatrooms_channel.rb:4:insubscribed' | /usr/local/rvm/gems/ruby-2.4.0/gems/actioncable-5.1.4/lib/action_cable/channel/base.rb:177:in block in subscribe_to_channel' | /usr/local/rvm/gems/ruby-2.4.0/gems/activesupport-5.1.4/lib/active_support/callbacks.rb:108:inblock in run_callbacks' | /usr/local/rvm/gems/ruby-2.4.0/gems/activesupport-5.1.4/lib/active_support/execution_wrapper.rb:81:in wrap' | /usr/local/rvm/gems/ruby-2.4.0/gems/actioncable-5.1.4/lib/action_cable/engine.rb:66:inblock (3 levels) in '

根据为 Apartment gem 提供的解决方案，问题似乎来自 connection.rb 和 chatrooms_channel.rb.

Based on the solutions provided for the Apartment gem, the issue seems to be coming from the connection.rb and the chatrooms_channel.rb.

module ApplicationCable
  class Connection < ActionCable::Connection::Base
    identified_by :current_user

    def connected
      self.current_user = find_verified_user
      logger.add_tags "ActionCable", "User #{current_user.id}"
    end

    protected

      def find_verified_user
        if current_user = env['warden'].user
          current_user
        else
          reject_unauthorized_connection
        end
      end
  end
end



class ChatroomsChannel < ApplicationCable::Channel

  def subscribed
    current_user.chatrooms.each do |chatroom|
      stream_from "chatrooms:#{chatroom.id}"
    end
  end

  def unsubscribed
    stop_all_streams
  end

  def send_message(data)
    Rails.logger.info data
    @chatroom = Chatroom.find(data["chatroom_id"])
    message   = @chatroom.messages.create(body: data["body"], user: current_user)
    MessageRelayJob.perform_later(message)
  end

end

我不知道如何在 ActionCable 中设置租户.我希望有人已经用 Milia 设置了 ActionCable.谁能给我一些建议?

I can't figure out how to set the tenant in ActionCable. I am hoping someone has already setup ActionCable with Milia. Can anyone give me some suggestions?

推荐答案

你应该使用

indentifiers :current_user, :tenant

 def connect
  self.tenant = cookies[:tenant]
  Apartment::Tenant.switch!(tenant)
  self.current_user = find_verified_user
end

其实我用的是The apartment gem

Actually I use The apartment gem

在你的频道中，你的第一行应该是

And inside yours channels in every method you first line should be

Apartment::Tenant.switch!(tenant) // variable tenant is the identifier defined in connection.rb 

这篇关于如何使用 Milia 在 ActionCable 中设置租户以实现多租户的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！