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alekseyl/all_keys.rb

Last active December 13, 2016 09:05
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for medium article 'Rails fast collection render'
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all_keys.rb
# nil means current_user is empty i.e. it's a guest
keys = [ [:user, :admin, :moderator, nil], [:ru, :en ] ]
# all combination of keys:
all_flatten_keys = keys.pop.product(*keys)
# [[:ru, :user], [:ru, :admin], [:ru, :moderator], [:ru, nil],
# [:en, :user], [:en, :admin], [:en, :moderator], [:en, nil]]
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