Re: ActiveSupport undercore behaviour

On Sun, Jul 21, 2013 at 7:03 AM, Serguei Cambour <[e-mail]>wrote:

> I changed as follows and it works for the first nest level for the
> moment:
>
> def format_hash_key(hash)
>   Hash[hash.map {|k, v| [ActiveSupport::Inflector.underscore(k.to_s), v]
> }]
> end
>
> arr = []
> TECHS.each_value do |array_values|
>   array_values.each do |hash|
>     arr << format_hash_key(hash)
>   end
> end
> puts arr
>
> Output:
>
>
> {"assigned_name"=>"P1", "export_price"=>"USD", "id"=>"1",
> "delivery"=>"Y", "registered_members"=>[{"Name"=>"Admin", "Id"=>"3",
> "AvailablePosts"=>[{"Seat"=>"2", "Colour"=>18}, {"Seat"=>"3",
> "Colour"=>19}, {"Seat"=>"4", "Colour"=>181}, {"Seat"=>"5",
> "Colour"=>183}]}]}
>
> Is there any elegant way to call the same method for other nested levels
> (values) ?
>
> Thank you.
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
I'd probably do it like this. (I like using the word "json" in the name b/c
it makes it informs the caller of what the data structure can contain)

require 'active_support/inflector'

TECHS = {"platform"=>
  [{"AssignedName"=>"P1", "ExportPrice"=>"USD", "Id"=>"1",
    "Delivery"=>"Y",
    "RegisteredMembers"=>[
      {"Name"=>"Admin", "Id"=>"3",
        "AvailablePosts"=>[
          {"Seat"=>"2", "Colour"=>18, },
          {"Seat"=>"3", "Colour"=>19, },
          {"Seat"=>"4", "Colour"=>181, },
          {"Seat"=>"5", "Colour"=>183, }
        ]
      }
    ]
  }]
}

def normalize_json(deserialized_json)
  case deserialized_json
  when Array
    deserialized_json.map { |v| normalize_json v }
  when Hash
    deserialized_json.each_with_object Hash.new do |(k, v), new_hash|
      new_hash[ActiveSupport::Inflector.underscore(k)] = normalize_json(v)
    end
  else
    deserialized_json
  end
end

require 'pp'
pp normalize_json TECHS

# >> {"platform"=>
# >>   [{"assigned_name"=>"P1",
# >>     "export_price"=>"USD",
# >>     "id"=>"1",
# >>     "delivery"=>"Y",
# >>     "registered_members"=>
# >>      [{"name"=>"Admin",
# >>        "id"=>"3",
# >>        "available_posts"=>
# >>         [{"seat"=>"2", "colour"=>18},
# >>          {"seat"=>"3", "colour"=>19},
# >>          {"seat"=>"4", "colour"=>181},
# >>          {"seat"=>"5", "colour"=>183}]}]}]}