BigBinary Blog
We write about Ruby on Rails, React.js, React Native, remote work, open source, engineering and design.
Rails 5.2 expiry option for signed & encrypted cookies
This blog is part of our Rails 5.2 series.
In Rails 5.1 we have option to set expiry for cookies.
1cookies[:username] = {value: "sam_smith", expires: Time.now + 4.hours}The above code sets cookie which expires in 4 hours.
The expires option,
is not supported for
signed and encrypted cookies.
In other words we are not able to
decide on server side when an
encrypted or signed cookie would expire.
From Rails 5.2, we'll be able to set expiry for encrypted and signed cookies as well.
1cookies.encrypted[:firstname] = { value: "Sam", expires: Time.now + 1.day }
2
3# sets string `Sam` in an encrypted `firstname` cookie for 1 day.
4
5cookies.signed[:lastname] = {value: "Smith", expires: Time.now + 1.hour }
6
7# sets string `Smith` in a signed `lastname` cookie for 1 hour.
8
Apart from this, in Rails 5.1, we needed to provide an absolute date/time value for expires option.
1
2# setting cookie for 90 minutes from current time.
3
4cookies[:username] = {value: "Sam", expires: Time.now + 90.minutes}Starting Rails 5.2, we'll be able to
set the expires option
by giving a relative duration as value.
1
2# setting cookie for 90 minutes from current time.
3
4cookies[:username] = { value: "Sam", expires: 90.minutes }
5
6# After 1 hour
7
8> cookies[:username]
9> #=> "Sam"
10
11# After 2 hours
12
13> cookies[:username]
14> #=> nil
15> ~~~