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Contents
# @note copied from the main Rails repo instead of adding via active_support
# @see https://github.com/rails/rails/blob/794a70f94485fb64ed1c49ba8532895306e2001c/activesupport/lib/active_support/core_ext/array/extract_options.rb
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.
#
# def options(*args)
# args.extract_options!
# end
#
# options(1, 2) # => {}
# options(1, 2, a: :b) # => {:a=>:b}
def extract_options!
if last.is_a?(Hash) && last.extractable_options?
pop
else
{}
end
end
end
Version data entries
5 entries across 5 versions & 3 rubygems