Ruby-on-rails 设置 Rails cookie 的开始日期和到期日期

Set start date and expiration date for Rails cookies

提问by Senthil Kumar Bhaskaran

How do I set a Rails cookie to start and/or expire at a certain date?

如何设置 Rails cookie 以在特定日期开始和/或过期？

回答by Senthil Kumar Bhaskaran

Excerpts from Rails 5 documentation:

摘自Rails 5 文档：

Cookies are read and written through ActionController#cookies.

The cookies being read are the ones received along with the request, the cookies being written will be sent out with the response. Reading a cookie does not get the cookie object itself back, just the value it holds.

Examples of writing:

# Sets a simple session cookie.
# This cookie will be deleted when the user's browser is closed.
cookies[:user_name] = "david"

# Sets a cookie that expires in 1 hour.
cookies[:login] = { value: "XJ-122", expires: 1.hour }

# Sets a cookie that expires at a specific time.
cookies[:login] = { value: "XJ-122", expires: Time.utc(2020, 10, 15, 5) }

# Sets a "permanent" cookie (which expires in 20 years from now).
cookies.permanent[:login] = "XJ-122"

[...]

The option symbols for setting cookies are:

• :expires- The time at which this cookie expires, as a Time or ActiveSupport::Duration object.

[...]

Cookie 是通过 ActionController#cookies 读取和写入的。

正在读取的 cookie 是与请求一起接收的 cookie，正在写入的 cookie 将与响应一起发送出去。读取 cookie 不会取回 cookie 对象本身，只会取回它所持有的值。

写作的例子：

# Sets a simple session cookie.
# This cookie will be deleted when the user's browser is closed.
cookies[:user_name] = "david"

# Sets a cookie that expires in 1 hour.
cookies[:login] = { value: "XJ-122", expires: 1.hour }

# Sets a cookie that expires at a specific time.
cookies[:login] = { value: "XJ-122", expires: Time.utc(2020, 10, 15, 5) }

# Sets a "permanent" cookie (which expires in 20 years from now).
cookies.permanent[:login] = "XJ-122"

[...]

设置 cookie 的选项符号是：

• :expires- 此 cookie 过期的时间，作为 Time 或 ActiveSupport::Duration 对象。

[...]

回答by pageman

your question might be related to this question: How to I dynamically set the expiry time for a cookie-based session in Rails

您的问题可能与这个问题有关： 如何在 Rails 中为基于 cookie 的会话动态设置到期时间

one of the comments points to Deprecating SlideSessions:

评论之一指向Deprecating SlideSessions：

"..If you need to set expiration period for sessions through all controllers in your application, simply add the following option to your config/intializers/session_store.rb file:

:expire_after => 60.minutes

If you need to set different expiration time in different controllers or actions, use the following code in action or some before_filter:

request.session_options = request.session_options.dup
request.session_options[:expire_after]= 5.minutes
request.session_options.freeze

Duplication of the hash is needed only because it is already frozen at that point, even though modification of at least :expire_after is possible and works flawlessly..."

"..如果您需要通过应用程序中的所有控制器为会话设置过期期限，只需将以下选项添加到您的 config/intializers/session_store.rb 文件中：

:expire_after => 60.minutes

如果需要在不同的控制器或动作中设置不同的过期时间，请在动作中使用以下代码或一些before_filter：

request.session_options = request.session_options.dup
request.session_options[:expire_after]= 5.minutes
request.session_options.freeze

只需要复制散列，因为它在那时已经被冻结，即使至少修改 :expire_after 是可能的并且可以完美地工作......”

I hope that helps. :)

我希望这有帮助。:)

回答by eltiare

It's worth noting that as of right now it is impossible to set a start time for a cookie. A cookie set is always active immediately.

值得注意的是，目前还无法为 cookie 设置开始时间。cookie 集始终立即处于活动状态。