監督員如何從機架會話中獲取當前用戶？

Question

用戶登錄後（ENV['warden'].authenticate!'d）一次，warden如何知道？除了rack.session價值之外，我無法在cookie中找到任何內容 - 我無法從文檔或代碼中找出這些。

Answer 1

在色器件/ LIB /色器件/控制器/ helpers.rb：35

def devise_group(group_name, opts={}) 
     mappings = "[#{ opts[:contains].map { |m| ":#{m}" }.join(',') }]" 

     class_eval <<-METHODS, __FILE__, __LINE__ + 1 
     def authenticate_#{group_name}!(favourite=nil, opts={}) 
      unless #{group_name}_signed_in? 
      mappings = #{mappings} 
      mappings.unshift mappings.delete(favourite.to_sym) if favourite 
      mappings.each do |mapping| 
       opts[:scope] = mapping 
       warden.authenticate!(opts) if !devise_controller? || opts.delete(:force) 
      end 
      end 
     end 
     def #{group_name}_signed_in? 
      #{mappings}.any? do |mapping| 
      warden.authenticate?(scope: mapping) 
      end 
     end 
     def current_#{group_name}(favourite=nil) 
      mappings = #{mappings} 
      mappings.unshift mappings.delete(favourite.to_sym) if favourite 
      mappings.each do |mapping| 
      current = warden.authenticate(scope: mapping) 
      return current if current 
      end 
      nil 
     end 
     def current_#{group_name.to_s.pluralize} 
      #{mappings}.map do |mapping| 
      warden.authenticate(scope: mapping) 
      end.compact 
     end 
     helper_method "current_#{group_name}", "current_#{group_name.to_s.pluralize}", "#{group_name}_signed_in?" 
     METHODS 
    end 

https://github.com/plataformatec/devise/blob/master/lib/devise/controllers/helpers.rb

闡釋： 在服務器開始時devise_group方法運行動態地創建輔助方法（CURRENT_USER例如），這是用於實際保存用戶的執事012xx的包裝，其內容是warden.authenticate方法內容是

def warden 
    request.env['warden'] 
    end 

也是在同一個文件中聲明