Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/do_snapshot/core_ext/hash.rb

Overview

Rails symbolize keys methods for Hash

Instance Method Summary collapse

Instance Method Details

#symbolize_keys ⇒ Object 



28
29
30
 
# File 'lib/do_snapshot/core_ext/hash.rb', line 28

def symbolize_keys
  transform_keys { |key| key.to_sym rescue key } # rubocop:disable Style/RescueModifier
end

#symbolize_keys! ⇒ Object

Destructively convert all keys to symbols, as long as they respond to to_sym. Same as symbolize_keys, but modifies self.



34
35
36
 
# File 'lib/do_snapshot/core_ext/hash.rb', line 34

def symbolize_keys!
  transform_keys! { |key| key.to_sym rescue key } # rubocop:disable Style/RescueModifier
end

#transform_keys ⇒ Object

Returns a new hash with all keys converted using the block operation.

hash = { name: 'Rob', age: '28' }

hash.transform_keys{ |key| key.to_s.upcase }
# => {"NAME"=>"Rob", "AGE"=>"28"}



11
12
13
14
15
16
17
 
# File 'lib/do_snapshot/core_ext/hash.rb', line 11

def transform_keys
  result = {}
  each_key do |key|
    result[yield(key)] = self[key]
  end
  result
end

#transform_keys! ⇒ Object

Destructively convert all keys using the block operations. Same as transform_keys but modifies self.



21
22
23
24
25
26
 
# File 'lib/do_snapshot/core_ext/hash.rb', line 21

def transform_keys!
  keys.each do |key|
    self[yield(key)] = delete(key)
  end
  self
end