Question

Cheers! Please, help me to solve the problem – I have a cookies, which is hash:

> cookies.keys
=> [:wishlist]

Then:

> cookies[:wishlist].keys
=> ["result_count", "results"]

results is an array of Hashie::rash

> cookies[:wishlist].results[0].keys
=> ["wrapper_type", "kind", "artist_id", ...]

cookies is hash, cookies[:wishlist] is Hashie::Rash, results is an array, which contains other Hashie::Rash’ies.
The question is how could I add new data to wishlist without deleting old data (add track to wishlist, for example)?

Answer 1

Assuming you have this structure:

cookies = {
  :wishlist => Hashie::Rash.new({
    'resultCount' => 2,
    'results' => [
      Hashie::Rash.new({
        'wrapperType' => 'foo1',
        'kind'        => 'bar1',
        'artistId'    => 'baz1'
      }),
      Hashie::Rash.new({
        'wrapperType' => 'foo2',
        'kind'        => 'bar2',
        'artistId'    => 'baz2'
      })
    ]
  })
}

You can simply use Array#push to add new items to your results:

require 'rash'

new_wishlist_item = Hashie::Rash.new({
  'wrapperType' => 'foo3',
  'kind'        => 'bar3',
  'artistId'    => 'baz3'
})

cookies[:wishlist].results.push( new_wishlist_item )
cookies[:wishlist].result_count = results.count

cookies[:wishlist].results.each do |r|
  puts r.wrapper_type
end

Output:

foo1
foo2
foo3