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-rw-r--r--activesupport/lib/active_support/number_helper.rb2
-rw-r--r--activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb4
2 files changed, 4 insertions, 2 deletions
diff --git a/activesupport/lib/active_support/number_helper.rb b/activesupport/lib/active_support/number_helper.rb
index 258d9b34e1..38a9ce361d 100644
--- a/activesupport/lib/active_support/number_helper.rb
+++ b/activesupport/lib/active_support/number_helper.rb
@@ -220,8 +220,6 @@ module ActiveSupport
# * <tt>:strip_insignificant_zeros</tt> - If +true+ removes
# insignificant zeros after the decimal separator (defaults to
# +true+)
- # * <tt>:prefix</tt> - If +:si+ formats the number using the SI
- # prefix (defaults to :binary)
#
# ==== Examples
#
diff --git a/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb b/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb
index ac0d20b454..a4a8690bcd 100644
--- a/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb
+++ b/activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb
@@ -7,6 +7,10 @@ module ActiveSupport
self.validate_float = true
def convert
+ if opts.key?(:prefix)
+ ActiveSupport::Deprecation.warn('The :prefix option of `number_to_human_size` is deprecated and will be removed in Rails 5.1 with no replacement.')
+ end
+
@number = Float(number)
# for backwards compatibility with those that didn't add strip_insignificant_zeros to their locale files