Break up misc Object extensions

1 files changed, 24 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/core_ext/object/with_options.rb b/activesupport/lib/active_support/core_ext/object/with_options.rb
new file mode 100644
index 0000000000..dd38b7d261
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/object/with_options.rb
@@ -0,0 +1,24 @@
+class Object
+  # 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