diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/object/misc.rb')
-rw-r--r-- | activesupport/lib/active_support/core_ext/object/misc.rb | 83 |
1 files changed, 3 insertions, 80 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/misc.rb b/activesupport/lib/active_support/core_ext/object/misc.rb index fb1bcdb98f..80011dfbed 100644 --- a/activesupport/lib/active_support/core_ext/object/misc.rb +++ b/activesupport/lib/active_support/core_ext/object/misc.rb @@ -1,80 +1,3 @@ -class Object - # Returns +value+ after yielding +value+ to the block. This simplifies the - # process of constructing an object, performing work on the object, and then - # returning the object from a method. It is a Ruby-ized realization of the K - # combinator, courtesy of Mikael Brockman. - # - # ==== Examples - # - # # Without returning - # def foo - # values = [] - # values << "bar" - # values << "baz" - # return values - # end - # - # foo # => ['bar', 'baz'] - # - # # returning with a local variable - # def foo - # returning values = [] do - # values << 'bar' - # values << 'baz' - # end - # end - # - # foo # => ['bar', 'baz'] - # - # # returning with a block argument - # def foo - # returning [] do |values| - # values << 'bar' - # values << 'baz' - # end - # end - # - # foo # => ['bar', 'baz'] - def returning(value) - yield(value) - value - end - - # Yields <code>x</code> to the block, and then returns <code>x</code>. - # The primary purpose of this method is to "tap into" a method chain, - # in order to perform operations on intermediate results within the chain. - # - # (1..10).tap { |x| puts "original: #{x.inspect}" }.to_a. - # tap { |x| puts "array: #{x.inspect}" }. - # select { |x| x%2 == 0 }. - # tap { |x| puts "evens: #{x.inspect}" }. - # map { |x| x*x }. - # tap { |x| puts "squares: #{x.inspect}" } - def tap - yield self - self - end unless Object.respond_to?(:tap) - - # An elegant way to factor duplication out of options passed to a series of - # method calls. Each method called in the block, with the block variable as - # the receiver, will have its options merged with the default +options+ hash - # provided. Each method called on the block variable must take an options - # hash as its final argument. - # - # 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 -end +require 'active_support/core_ext/object/returning' +require 'active_support/core_ext/object/tap' +require 'active_support/core_ext/object/with_options' |