add method for finding or initializing by similar name

lib/tag.rb

@@ -1,6 +1,14 @@
 class Tag < ActiveRecord::Base
+  class << self
+    def find_or_initialize_with_name_like(name)
+      with_name_like(name).first || new(:name => name)
+    end
+  end
+
   has_many :taggings
 
   validates_presence_of :name
   validates_uniqueness_of :name
+
+  named_scope :with_name_like, lambda { |name| { :conditions => ["name like ?", name] } }
 end

test/tag_test.rb

@@ -15,4 +15,8 @@
     t.valid?
     t.errors[:name]
   end
+
+  expect Tag.create!(:name => "iamawesome") do
+    Tag.find_or_initialize_with_name_like("iaMawesome")
+  end
 end