deep_insert

gistfile1.txt

hash = {"some_key" => "value",
        "nested" => {"key1" => "val1", 
                     "key2" => "val2",
                     "key3" => {
                        "nenene" => "aa"
                     }}}


class Hash
  def insert_before(key, kvpair)
    arr = to_a
    pos = arr.index(arr.assoc(key))
    if pos
      arr.insert(pos, kvpair)
    else
      arr << kvpair
    end
    replace Hash[arr]
  end

  def deep_insert(*keys, key, val)
    keys.inject(self) {|h, k|
        h[k]
    }[key] = val
  end
end

keys = "nested.key3"

splitted = keys.split(".")
p splitted
p *splitted


p hash.deep_insert(*splitted, "nene", "oh")
#hash[*splitted].insert_before('key2', ['new_key', { "keke" => 'new_value' }])


p hash