Ruby create an array of hashes

Question

I've got a variable I'd like to use as a key to a hash that contains its own key and array.

e.g.

custArray = Array.new
custArray << {"c1001" => {"purchases" => ["prod01"]}}

I want to be able to do something like:

if custArray[:c1001].exists?
  custArray[{:c1001["purchases"]} << "prod02"]
end

but I'm just totally stuck.

Answer 1

You can resolve it with:

if c = custArray.find { |h| h.key? 'c1001' }
  c.dig('c1001', 'purchases') << "prod2"
end

Or if you can have more than one result with this key:

custArray.select { |h| h.key? 'c1001' }.each do |c|
  c.dig('c1001', 'purchases') << "prod2"
end