diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/array/extract_options.rb')
-rw-r--r-- | activesupport/lib/active_support/core_ext/array/extract_options.rb | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/array/extract_options.rb b/activesupport/lib/active_support/core_ext/array/extract_options.rb index 9ca32dc7aa..40ceb3eb9e 100644 --- a/activesupport/lib/active_support/core_ext/array/extract_options.rb +++ b/activesupport/lib/active_support/core_ext/array/extract_options.rb @@ -1,3 +1,14 @@ +class Hash + # By default, only instances of Hash itself are extractable. + # Subclasses of Hash may implement this method and return + # true to declare themselves as extractable. If a Hash + # is extractable, Array#extract_options! pops it from + # the Array when it is the last element of the Array. + def extractable_options? + instance_of?(Hash) + end +end + class Array # Extracts options from a set of arguments. Removes and returns the last # element in the array if it's a hash, otherwise returns a blank hash. @@ -9,6 +20,10 @@ class Array # options(1, 2) # => {} # options(1, 2, :a => :b) # => {:a=>:b} def extract_options! - last.is_a?(::Hash) ? pop : {} + if last.is_a?(Hash) && last.extractable_options? + pop + else + {} + end end end |