ruby ユーザー毎のアクセス履歴记录

Posted 2021-05-15

class SomeController < ApplicationController
  before_action :set_adwords_client

  private

  def set_adwords_client
    @hoge = Hoge.find(params[:id])
    add_account_access_history(@hoge.id)
  end
end

class ApplicationController < ActionController::Base
  ACCESS_HISTORY_MAX_LENGTH = 5

  def add_account_access_history(id)
    hoge = Hoge.find(id)
    
    return unless hoge
    
    # 履歴先頭に追加
    account_access_histories.unshift(hoge.id)
    
    # 重複排除
    account_access_histories.uniq!
    
    # 設定値以上の履歴が残っていたら削除
    if account_access_histories.size > ACCESS_HISTORY_MAX_LENGTH
      account_access_histories.slice!(0..ACCESS_HISTORY_MAX_LENGTH - 1)
    end
  end

  private

  def account_access_histories
    session[:account_access_history] ||= []
  end
end