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|
class Object
unless respond_to?(:send!)
# Anticipating Ruby 1.9 neutering send
alias send! send
end
# A Ruby-ized realization of the K combinator, courtesy of Mikael Brockman.
#
# def foo
# returning values = [] do
# values << 'bar'
# values << 'baz'
# end
# end
#
# foo # => ['bar', 'baz']
#
# def foo
# returning [] do |values|
# values << 'bar'
# values << 'baz'
# end
# end
#
# foo # => ['bar', 'baz']
#
def returning(value)
yield(value)
value
end
# An elegant way to refactor out common options
#
# with_options :order => 'created_at', :class_name => 'Comment' do |post|
# post.has_many :comments, :conditions => ['approved = ?', true], :dependent => :delete_all
# post.has_many :unapproved_comments, :conditions => ['approved = ?', false]
# post.has_many :all_comments
# end
#
# Can also be used with an explicit receiver:
#
# map.with_options :controller => "people" do |people|
# people.connect "/people", :action => "index"
# people.connect "/people/:id", :action => "show"
# end
#
def with_options(options)
yield ActiveSupport::OptionMerger.new(self, options)
end
# A duck-type assistant method. For example, Active Support extends Date
# to define an acts_like_date? method, and extends Time to define
# acts_like_time?. As a result, we can do "x.acts_like?(:time)" and
# "x.acts_like?(:date)" to do duck-type-safe comparisons, since classes that
# we want to act like Time simply need to define an acts_like_time? method.
def acts_like?(duck)
respond_to? "acts_like_#{duck}?"
end
end
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