Question

get '/blackjack/*' do
  if params[:splat] == "/hit" and defined? session[:bj_game]
    erb :blackjack
  elsif params[:splat] == "/fold" and defined? session[:bj_game]
    session[:bj_hum].fold = true
    erb :blackjack
  else
    if defined? session[:bj_game]
      new_session_check
      score_check
      erb :blackjack
    else
      session[:bj_game] = false
      session[:score] = 0
      new_session_check
      score_check
      erb :blackjack
    end
  end
end

def new_session_check
  if session[:bj_game] == false
    session[:bj_hum] = Blackjack.new
    session[:bj_com] = Blackjack.new
    session[:bj_game] = true
  end
end

def score_check
  if session[:bj_hum].game_loop == false
    if session[:bj_hum].score.to_i > 0
      session[:score] += session[:bj_hum].score.to_i
      check_save(session[:score])
    else
      session[:score] = 0
    end
    session[:bj_game] = false
    session[:bj_hum] = Blackjack.new
    session[:bj_com] = Blackjack.new
  end
end

每当得到分数检查时，我得到NoMethodError - NilClass的未定义方法'game_loop'。

但是，如果我从主页面开始：

get '/' do
  session[:bj_game] = false
  session[:score] = 0
  erb :home
end

然后点击来自home erb的/ blackjack链接，当new_session_check看到变量为false然后创建了Blackjack类的新实例（其中有game_loop的attr_accessor）时，它将工作。

为什么不在get'/ blackjack'版本中注册？

http://pastebin.com/6EFpp5gh - 这是一个可以运行的模型版本来验证这一点。首先转到localhost：4567 / blackjack，您将收到内部服务错误。重新启动服务器，然后首先转到localhost：4567，然后转到localhost：4567 / blackjack，你会发现它有效。

Answer 1

您需要helper：

get 'somepath' do
  score_check
end

helpers do
  def score_check
    # now you can access session from within here
  end
end

从另一个方法访问会话

1 个答案: