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Add ActiveSupport::Inflector.ordinal and Integer#ordinal

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commit 6fa0190fe4c1bf9f8306198536306de883039a27 1 parent 7a72fdc
Tim Gildea tgildea authored vijaydev committed
14 activesupport/lib/active_support/core_ext/integer/inflections.rb
View
@@ -14,4 +14,18 @@ class Integer
def ordinalize
ActiveSupport::Inflector.ordinalize(self)
end
+
+ # Ordinal returns the suffix used to denote the position
+ # in an ordered sequence such as 1st, 2nd, 3rd, 4th.
+ #
+ # 1.ordinal # => "st"
+ # 2.ordinal # => "nd"
+ # 1002.ordinal # => "nd"
+ # 1003.ordinal # => "rd"
+ # -11.ordinal # => "th"
+ # -1001.ordinal # => "st"
+ #
+ def ordinal
+ ActiveSupport::Inflector.ordinal(self)
+ end
end
34 activesupport/lib/active_support/inflector/methods.rb
View
@@ -250,6 +250,29 @@ def safe_constantize(camel_cased_word)
end
end
+ # Returns the suffix that should be added to a number to denote the position
+ # in an ordered sequence such as 1st, 2nd, 3rd, 4th.
+ #
+ # Examples:
+ # ordinal(1) # => "st"
+ # ordinal(2) # => "nd"
+ # ordinal(1002) # => "nd"
+ # ordinal(1003) # => "rd"
+ # ordinal(-11) # => "th"
+ # ordinal(-1021) # => "st"
+ def ordinal(number)
+ if (11..13).include?(number.to_i.abs % 100)
+ "th"
+ else
+ case number.to_i.abs % 10
+ when 1; "st"
+ when 2; "nd"
+ when 3; "rd"
+ else "th"
+ end
+ end
+ end
+
# Turns a number into an ordinal string used to denote the position in an
# ordered sequence such as 1st, 2nd, 3rd, 4th.
#
@@ -261,16 +284,7 @@ def safe_constantize(camel_cased_word)
# ordinalize(-11) # => "-11th"
# ordinalize(-1021) # => "-1021st"
def ordinalize(number)
- if (11..13).include?(number.to_i.abs % 100)
- "#{number}th"
- else
- case number.to_i.abs % 10
- when 1; "#{number}st"
- when 2; "#{number}nd"
- when 3; "#{number}rd"
- else "#{number}th"
- end
- end
+ "#{number}#{ordinal(number)}"
end
private
6 activesupport/test/core_ext/integer_ext_test.rb
View
@@ -22,4 +22,10 @@ def test_ordinalize
assert_equal '1st', 1.ordinalize
assert_equal '8th', 8.ordinalize
end
+
+ def test_ordinal
+ assert_equal 'st', 1.ordinal
+ assert_equal 'th', 8.ordinal
+ 1000000000000000000000000000000000000000000000000000000000000000000000.ordinal
+ end
end
6 activesupport/test/inflector_test.rb
View
@@ -304,6 +304,12 @@ def test_safe_constantize
def test_ordinal
OrdinalNumbers.each do |number, ordinalized|
+ assert_equal(ordinalized, number + ActiveSupport::Inflector.ordinal(number))
+ end
+ end
+
+ def test_ordinalize
+ OrdinalNumbers.each do |number, ordinalized|
assert_equal(ordinalized, ActiveSupport::Inflector.ordinalize(number))
end
end
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