Search code examples
ruby-on-railsrubyruby-on-rails-4

Ruby - Print specific value from hash

How can print the amount from the following hash? The hash is stored inside a output variable.

And I want to print only the amount "12.37".

output = {:next_page_token=>nil, :group_definitions=>nil, :results_by_time=>[{:time_period=>{:start=>"2022-07-01", :end=>"2022-08-01"}, :total=>{"BlendedCost"=>{:amount=>"12.3766372967", :unit=>"USD"}}, :groups=>[], :estimated=>false}], :dimension_value_attributes=>[]}

Solution

  • Use Hash#dig and follow the path to the value:

    output.dig(:results_by_time, 0, :total, 'BlendedCost', :amount)
#=> "12.3766372967"

amount = output.dig(:results_by_time, 0, :total, 'BlendedCost', :amount)
Float(amount).round(2)
#=> 12.38