如何在同一控制器中以不同方法使用对象？ [英] How can I use an object in different methods within the same controller?

问题描述

我有一个不同方法的控制器。
在第一种方法中， authorize 我实例化了一个我想在另一个方法中重用的对象。问题是两种方法都有不同的视图，并且控制器实例并不保持不变。

I have a controller with different methods. In the first method, authorize I instantiate an object which I would like to reuse in another method. The problem is that both methods have different views, and the controller instance does not remain the same.

Hers是我的代码

def authorize
 @session ||= get_session
 puts @session
 @authorize_url = @session.get_authorize_url
end

def list
  puts self
  @session ||= get_session
  @client = DropboxClient.new(@session, ACCESS_TYPE)
  metadata = get_meta_data("/")
  @files = []
  metadata.each do |data|
   @files.push data
  end
  @files
end

$ b b

那么如何重用@session变量呢？

So how can I reuse the @session variable?

Best
Phil

Best Phil

推荐答案

你不，真的。控制器中渲染视图的每个公共方法都意味着是请求的端点。

You don't, really. Each public method in your controller that renders a view is meant to be an endpoint for a request. The request's lifecycle ends there.

要在请求之间保持数据，您应该使用会话。这可能有点更混乱，因为你确实试图在请求之间保持一个名为 @session 的实例变量，但这是他们要的。

To persist data between requests, you should use sessions. This might be a bit more confusing, since you are indeed trying to persist an instance variable called @session between requests, but that's what they're for.

Rails通过您的控制器中可用的会话散列来公开会话数据。有关Rails如何处理会话的详细信息，请参见 Rails文档

Rails exposes session data through a session hash available in your controllers. More information about how Rails handles sessions is available in the Rails Documentation

class YourController < ApplicationController
    def authorize
        @session ||= get_session
        session[:dropbox_session] = @session
    end

    def list
        @client = DropboxClient.new(session[:dropbox_session], ACCESS_TYPE)
    end
end

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