Dotted path to Ruby nested hash

gistfile1.md

Convert a dotted path to hash

def dotted_path_to_hash(hash)
  hash.map do |pkey, pvalue|
    pkey.to_s.split(".").reverse.inject(pvalue) do |value, key|
      {key.to_sym => value}
    end
  end.inject(&:deep_merge)
end

# { 'level1.level2.level3' => 123 }
# to
# { :level1 => { :level2 => { :level3 => 123 } } }