Module: KeyPath::HashExtensions

Included in:
Hash
Defined in:
lib/key_path/hash/extensions.rb

Overview

A Mixin for Hash which allows us to create a path from a key.

Instance Method Summary collapse

Instance Method Details

#keypaths_for_nested_key(nested_key = '', nested_hash = self, path = [], all_values = {}) ⇒ Object 



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# File 'lib/key_path/hash/extensions.rb', line 4

def keypaths_for_nested_key(nested_key = '', nested_hash = self,
                            path = [], all_values = {})
  nested_hash.each do |k, v|
    path << k.to_s # assemble the path from the key
    case v
    when Array then
      v.each_with_index do |item, i|
        path << "#{i}" # add the array key
        keypaths_for_nested_key(nested_key, item, path, all_values)
      end
      path.pop # remove the array key
    when Hash then keypaths_for_nested_key(nested_key, v, path, all_values)
    else
      all_values.merge!("#{path.join('.')}" => "#{v}") if k == nested_key

      path.pop
    end
  end
  path.pop

  all_values
end