Class: Foreplay::Utility

Inherits:
Object
  • Object
show all
Defined in:
lib/foreplay/utility.rb

Class Method Summary collapse

Class Method Details

.supermerge(hash, other_hash) ⇒ Object

Returns a new hash with hash and other_hash merged recursively, including arrays.

h1 = { x: { y: [4,5,6] }, z: [7,8,9] }
h2 = { x: { y: [7,8,9] }, z: 'xyz' }
h1.supermerge(h2)
#=> {:x=>{:y=>[4, 5, 6, 7, 8, 9]}, :z=>[7, 8, 9, "xyz"]}



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
# File 'lib/foreplay/utility.rb', line 9

def self.supermerge(hash, other_hash)
  fail 'supermerge only works if you pass two hashes. '\
    "You passed a #{hash.class} and a #{other_hash.class}." unless hash.is_a?(Hash) && other_hash.is_a?(Hash)

  new_hash = hash.deep_dup.with_indifferent_access

  other_hash.each_pair do |k, v|
    tv = new_hash[k]

    if tv.is_a?(Hash) && v.is_a?(Hash)
      new_hash[k] = Foreplay::Utility.supermerge(tv, v)
    elsif tv.is_a?(Array) || v.is_a?(Array)
      new_hash[k] = Array.wrap(tv) + Array.wrap(v)
    else
      new_hash[k] = v
    end
  end

  new_hash
end