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*Edge*
+* Add find(ids) to relations. [Pratik Naik]
+
+ old_users = User.order("age DESC")
+ old_users.find(1)
+ old_users.find(1, 2, 3)
+
+* Add new finder methods to association collection. [Pratik Naik]
+
+ class User < ActiveRecord::Base
+ has_many :items
+ end
+
+ user = User.first
+ user.items.where(:items => {:colour => 'red'})
+ user.items.select('items.id')
+
+* Add relation.reload to force reloading the records. [Pratik Naik]
+
+ topics = Topic.scoped
+ topics.to_a # force load
+ topics.first # returns a cached record
+ topics.reload
+ topics.first # Fetches a new record from the database
+
+* Rename Model.conditions and relation.conditions to .where. [Pratik Naik]
+
+ Before :
+ User.conditions(:name => 'lifo')
+ User.select('id').conditions(["age > ?", 21])
+
+ Now :
+ User.where(:name => 'lifo')
+ User.select('id').where(["age > ?", 21])
+
+* Add Model.select/group/order/limit/joins/conditions/preload/eager_load class methods returning a lazy relation. [Pratik Naik]
+
+ Examples :
+
+ posts = Post.select('id).order('name') # Returns a lazy relation
+ posts.each {|p| puts p.id } # Fires "select id from posts order by name"
+
+* Model.scoped now returns a relation if invoked without any arguments. [Pratik Naik]
+
+ Example :
+
+ posts = Post.scoped
+ posts.size # Fires "select count(*) from posts" and returns the count
+ posts.each {|p| puts p.name } # Fires "select * from posts" and loads post objects
+
+* Association inverses for belongs_to, has_one, and has_many. Optimization to reduce database queries. #3533 [Murray Steele]
+
+ # post.comments sets each comment's post without needing to :include
+ class Post < ActiveRecord::Base
+ has_many :comments, :inverse_of => :post
+ end
+
* MySQL: add_ and change_column support positioning. #3286 [Ben Marini]
* Reset your Active Record counter caches with the reset_counter_cache class method. #1211 [Mike Breen, Gabe da Silveira]