ruby-on-rails-6 - “ActionCable 连接未打开！在调用 `this.stimulate()` 之前，`this.isActionCableConnectionOpen()` 必须返回 true”

Question

使用 rails 6 访问刺激反射时出现上述错误。

  <a href="#"
  data-reflex="click->VotesReflex#increment"
  data-step="1" 
  data-count="<%= @count.to_i %>"
  >Increment <%= @count.to_i %></a>

 class VotesReflex < ApplicationReflex
  delegate :current_user, to: :connection
  def increment
    @count = element.dataset[:count].to_i + element.dataset[:step].to_i
  end
end

Answer 1

您应该使用 current_user 识别连接以打开连接。假设您正在使用设计进行身份验证。

这是你应该做的。

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

    def connect
      self.current_user = find_verified_user
    end

    private

    def find_verified_user
      # rubocop:disable Lint/AssignmentInCondition
      if verified_user = User.find_by(id: cookies.signed['user.id'])
        verified_user
      else
        reject_unauthorized_connection
      end
    end
  end
end

在您的初始化程序中，创建warden_cookies.rb

Warden::Manager.after_set_user do |user, auth, opts|
  scope = opts[:scope]
  auth.cookies.signed["#{scope}.id"] = user.id
  auth.cookies.signed["#{scope}.expires_at"] = 30.minutes.from_now
end

Warden::Manager.before_logout do |_user, auth, opts|
  scope = opts[:scope]
  auth.cookies.signed["#{scope}.id"] = nil
  auth.cookies.signed["#{scope}.expires_at"] = nil
end