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Diffstat (limited to 'railties/guides/source/active_support_core_extensions.textile')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index 781d3d08cd..8716e94bd9 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -452,6 +452,30 @@ Examples of +in?+: NOTE: Defined in +active_support/core_ext/object/inclusion.rb+. +h4. +public_send+ + +This method is available by default in Ruby 1.9, and is backported to Ruby 1.8 by Active Support. Like the regular +send+ method, +public_send+ allows you to call a method when the name is not known until runtime. However, if the method is not public then a +NoMethodError+ exception will be raised. + +<ruby> +class Greeter + def hello(who) + "Hello " + who + end + + private + + def secret + "sauce" + end +end + +greeter = Greeter.new +greeter.public_send(:hello, 'Jim') # => "Hello Jim" +greeter.public_send(:secret) # => NoMethodError +</ruby> + +NOTE: Defined in +active_support/core_ext/object/public_send.rb+. + h3. Extensions to +Module+ h4. +alias_method_chain+ |