class Hash
Public Instance Methods
Returns a new hash with all keys converted to strings. This includes the keys from the root hash and from all nested hashes.
hash = { person: { name: 'Rob', age: '28' } } hash.deep_stringify_keys # => {"person"=>{"name"=>"Rob", "age"=>"28"}}
# File lib/deep_hash_transform.rb, line 106 def deep_stringify_keys deep_transform_keys { |key| key.to_s } end
Destructively convert all keys to strings. This includes the keys from the root hash and from all nested hashes.
# File lib/deep_hash_transform.rb, line 113 def deep_stringify_keys! deep_transform_keys! { |key| key.to_s } end
Returns a new hash with all keys converted to symbols, as long as they respond to to_sym
. This includes the keys from the root hash and from all nested hashes.
hash = { 'person' => { 'name' => 'Rob', 'age' => '28' } } hash.deep_symbolize_keys # => {:person=>{:name=>"Rob", :age=>"28"}}
# File lib/deep_hash_transform.rb, line 125 def deep_symbolize_keys deep_transform_keys { |key| key.to_sym rescue key } end
Destructively convert all keys to symbols, as long as they respond to to_sym
. This includes the keys from the root hash and from all nested hashes.
# File lib/deep_hash_transform.rb, line 132 def deep_symbolize_keys! deep_transform_keys! { |key| key.to_sym rescue key } end
Returns a new hash with all keys converted by the block operation. This includes the keys from the root hash and from all nested hashes.
hash = { person: { name: 'Rob', age: '28' } } hash.deep_transform_keys{ |key| key.to_s.upcase } # => {"PERSON"=>{"NAME"=>"Rob", "AGE"=>"28"}}
# File lib/deep_hash_transform.rb, line 79 def deep_transform_keys(&block) result = {} each do |key, value| result[yield(key)] = value.is_a?(Hash) ? value.deep_transform_keys(&block) : value end result end
Destructively convert all keys by using the block operation. This includes the keys from the root hash and from all nested hashes.
# File lib/deep_hash_transform.rb, line 90 def deep_transform_keys!(&block) keys.each do |key| value = delete(key) self[yield(key)] = value.is_a?(Hash) ? value.deep_transform_keys!(&block) : value end self end
Returns a new hash with all keys converted to strings.
hash = { name: 'Rob', age: '28' } hash.stringify_keys # => { "name" => "Rob", "age" => "28" }
# File lib/deep_hash_transform.rb, line 44 def stringify_keys transform_keys { |key| key.to_s } end
Destructively convert all keys to strings. Same as stringify_keys
, but modifies self
.
# File lib/deep_hash_transform.rb, line 50 def stringify_keys! transform_keys! { |key| key.to_s } end
Returns a new hash with all keys converted to symbols, as long as they respond to to_sym
.
hash = { 'name' => 'Rob', 'age' => '28' } hash.symbolize_keys # => { name: "Rob", age: "28" }
# File lib/deep_hash_transform.rb, line 61 def symbolize_keys transform_keys { |key| key.to_sym rescue key } end
Destructively convert all keys to symbols, as long as they respond to to_sym
. Same as symbolize_keys
, but modifies self
.
# File lib/deep_hash_transform.rb, line 67 def symbolize_keys! transform_keys! { |key| key.to_sym rescue key } end
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"}
# File lib/deep_hash_transform.rb, line 21 def transform_keys result = {} each_key do |key| result[yield(key)] = self[key] end result end
Destructively convert all keys using the block operations. Same as transform_keys
but modifies self
.
# File lib/deep_hash_transform.rb, line 31 def transform_keys! keys.each do |key| self[yield(key)] = delete(key) end self end