From 161ab28b7c0bd28828b6d18613a9de09d47023c6 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Fri, 20 Jun 2008 11:31:06 -0500
Subject: [PATCH] Added block-handling to Enumerable#many? (Damian Janowski)
 [#452 state:resolved]

---
 activesupport/CHANGELOG                                 | 2 +-
 activesupport/lib/active_support/core_ext/enumerable.rb | 4 +++-
 activesupport/test/core_ext/enumerable_test.rb          | 9 +++++++--
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/activesupport/CHANGELOG b/activesupport/CHANGELOG
index d87558aba9..4f61311d95 100644
--- a/activesupport/CHANGELOG
+++ b/activesupport/CHANGELOG
@@ -6,7 +6,7 @@
 
 * Added Object#present? which is equivalent to !Object#blank? [DHH]
 
-* Added Enumberable#many? to encapsulate collection.size > 1 [DHH]
+* Added Enumberable#many? to encapsulate collection.size > 1 [DHH/Damian Janowski]
 
 * Add more standard Hash methods to ActiveSupport::OrderedHash [Steve Purcell]
 
diff --git a/activesupport/lib/active_support/core_ext/enumerable.rb b/activesupport/lib/active_support/core_ext/enumerable.rb
index 9647797ec2..e451e9933a 100644
--- a/activesupport/lib/active_support/core_ext/enumerable.rb
+++ b/activesupport/lib/active_support/core_ext/enumerable.rb
@@ -79,7 +79,9 @@ def index_by
   end
   
   # Returns true if the collection has more than 1 element. Functionally equivalent to collection.size > 1.
-  def many?
+  # Works with a block too ala any?, so people.many? { |p| p.age > 26 } # => returns true if more than 1 person is over 26.
+  def many?(&block)
+    size = block_given? ? select(&block).size : self.size
     size > 1
   end
 end
diff --git a/activesupport/test/core_ext/enumerable_test.rb b/activesupport/test/core_ext/enumerable_test.rb
index fb9b9b8916..2315d8f3db 100644
--- a/activesupport/test/core_ext/enumerable_test.rb
+++ b/activesupport/test/core_ext/enumerable_test.rb
@@ -63,10 +63,15 @@ def test_index_by
     assert_equal({ 5 => payments[0], 15 => payments[1], 10 => payments[2] },
                  payments.index_by { |p| p.price })
   end
-  
-  def test_several
+
+  def test_many
     assert ![].many?
     assert ![ 1 ].many?
     assert [ 1, 2 ].many?
+
+    assert ![].many? {|x| x > 1 }
+    assert ![ 2 ].many? {|x| x > 1 }
+    assert ![ 1, 2 ].many? {|x| x > 1 }
+    assert [ 1, 2, 2 ].many? {|x| x > 1 }
   end
 end
-- 
GitLab