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Allow optional arguments and/or block for Object#try like Object#send…

… does. [#1425 state:resolved]

Original suggestion by Pat Nakajima.

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>
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1 parent fffb1da commit 823b623fe2de8846c37aa13250010809ac940b57 @alloy alloy committed with lifo Nov 21, 2008
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9 activesupport/lib/active_support/core_ext/object/misc.rb
@@ -73,6 +73,7 @@ def acts_like?(duck)
end
# Tries to send the method only if object responds to it. Return +nil+ otherwise.
+ # It will also forward any arguments and/or block like Object#send does.
#
# ==== Example :
#
@@ -81,7 +82,11 @@ def acts_like?(duck)
#
# With try
# @person.try(:name)
- def try(method)
- send(method) if respond_to?(method, true)
+ #
+ # # try also accepts arguments/blocks for the method it is trying
+ # Person.try(:find, 1)
+ # @people.try(:map) {|p| p.name}
+ def try(method, *args, &block)
+ send(method, *args, &block) if respond_to?(method, true)
end
end
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7 activesupport/test/core_ext/object_and_class_ext_test.rb
@@ -271,4 +271,11 @@ class << @string
assert_equal 5, @string.try(:size)
end
+ def test_argument_forwarding
+ assert_equal 'Hey', @string.try(:sub, 'llo', 'y')
+ end
+
+ def test_block_forwarding
+ assert_equal 'Hey', @string.try(:sub, 'llo') { |match| 'y' }
+ end
end

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