Question

Hey,
how do I set a scope in rails 3 to todays records?

This doent work, yet. I get no data.

class MyModel < ActiveRecord::Base
    scope :today, :conditions => { :created_at => Date.today }
end

Answer 1

Since “created_at” column contains date and time, but you need compare only date, you have two ways (I assume you use MySQL) :

1. use BETWEEN:
   scope :today, lambda { WHERE("created_at BETWEEN '#{DateTime.now.beginning_of_day}' AND '#{DateTime.now.end_of_day}'") }
2. use DATE() function:
   scope :today, lambda { WHERE('DATE(created_at) = ?', Date.today)}

also, you can add “created_on” column to the table with date only.

Updated:

def self.up
   add_column table_name, :created_on, :date  
   add_column table_name, :updated_on, :date
end

scope :today, lambda { where(created_on: Date.today) }