diff options
Diffstat (limited to 'activesupport/lib/active_support')
-rw-r--r-- | activesupport/lib/active_support/core_ext/object/inclusion.rb | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/inclusion.rb b/activesupport/lib/active_support/core_ext/object/inclusion.rb index b5671f66d0..141f19e7b3 100644 --- a/activesupport/lib/active_support/core_ext/object/inclusion.rb +++ b/activesupport/lib/active_support/core_ext/object/inclusion.rb @@ -12,4 +12,16 @@ class Object rescue NoMethodError raise ArgumentError.new("The parameter passed to #in? must respond to #include?") end + + # Returns the receiver if it's included in the argument otherwise returns +nil+. + # Argument must be any object which responds to +#include?+. Usage: + # + # params[:bucket_type].present_in %w( project calendar ) + # + # This will throw an ArgumentError if the argument doesn't respond to +#include?+. + # + # @return [Object] + def present_in(another_object) + self.in?(another_object) ? self : nil + end end |