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Rails — cookies adds an array

I store an array to cookies in someone method:

def someone
cookies[:test] = JSON.generate [@page.image, @page.title]
end


But I want to cookies[:test] can store more information as "<<" not "=",
like(will get an error):

def someone
cookies[:test] << JSON.generate [@page.image, @page.title]
end


Now, cookies[:test].inspect is [[@page.image, @page.title], [@page.image, @page.title]].
How to make this?

cookies[:test].inspect

[[@page.image, @page.title], [@page.image, @page.title]]

1 Answer
1

I don't think it's possible to append directly to the cookie; it's stored as a string (which JSON.generate returns), so you need to deserialize, append, then reserialize and store:

current = JSON.parse cookies[:test]
current << [@page.image, @page.title]
cookies[:test] = JSON.generate current


Or a little more succinctly:

cookies[:test] = (JSON.parse(cookies[:test]) + [[@page.image, @page.title]]).to_json


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