Ответ 1
Поместите в свой config/locales/en.yml
:
en:
number:
human:
decimal_units:
format: "%n%u"
units:
unit: ""
thousand: K
million: M
billion: B
trillion: T
quadrillion: Q
Затем вы получите:
number_to_human 420 # => "420"
number_to_human 5680 # => "5.68K"
number_to_human 12680 # => "12.7K"
number_to_human 6802251 # => "6.8M"
number_to_human 894100158 # => "894M"