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-rw-r--r--activesupport/lib/active_support/number_helper.rb10
1 files changed, 10 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/number_helper.rb b/activesupport/lib/active_support/number_helper.rb
index 248521e677..64d9e71f37 100644
--- a/activesupport/lib/active_support/number_helper.rb
+++ b/activesupport/lib/active_support/number_helper.rb
@@ -47,6 +47,14 @@ module ActiveSupport
# Formats a +number+ into a currency string (e.g., $13.65). You
# can customize the format in the +options+ hash.
#
+ # The currency unit and number formatting of the current locale will be used
+ # unless otherwise specified in the provided options. No currency conversion
+ # is performed. If the user is given a way to change their locale, they will
+ # also be able to change the relative value of the currency displayed with
+ # this helper. If your application will ever support multiple locales, you
+ # may want to specify a constant <tt>:locale</tt> option or consider
+ # using a library capable of currency conversion.
+ #
# ==== Options
#
# * <tt>:locale</tt> - Sets the locale to be used for formatting
@@ -235,6 +243,8 @@ module ActiveSupport
# number_to_human_size(1234567) # => 1.18 MB
# number_to_human_size(1234567890) # => 1.15 GB
# number_to_human_size(1234567890123) # => 1.12 TB
+ # number_to_human_size(1234567890123456) # => 1.1 PB
+ # number_to_human_size(1234567890123456789) # => 1.07 EB
# number_to_human_size(1234567, precision: 2) # => 1.2 MB
# number_to_human_size(483989, precision: 2) # => 470 KB
# number_to_human_size(1234567, precision: 2, separator: ',') # => 1,2 MB