DateScopable provides convenient scopes for Rails ActiveRecord models:
User.today
User.yesterday
User.on Date.parse("4/7/2011")
User.last_7_days
User.last_month
User.in_month_year(12,1999)
User.between(Date.parse("4/1/2011"), Date.parse("4/5/2011"))
# Gemfile
gem "date_scopable"
$ bundle install
# In your models
class User < ActiveRecord::Base
include DateScopable
# the rest of your model
end