How can I write this record search in rails 3

Question

 #find the most recent news item for a specific locale
  def self.find_most_recent_news_for_locale

    first(:include => :news_item_detail,:conditions => ["news_items.created_at= ? AND  news_item_details.locale = ?",  maximum(:created_at), I18n.locale])
  end

The Models

class NewsItem < ActiveRecord::Base

has_one :news_item_detail

end

class NewsItemDetail < ActiveRecord::Base

belongs_to :news_item

end

Answer 1

In Rails 3, you should use the where method for creating conditions:

def self.find_most_recent_news_for_locale
  where("news_items.created_at = ? AND news_item_details.locale = ?",
    maximum(:created_at), 
    I18n.locale).includes(:news_item_details).first
end

You might want to watch episode #202 of Railscasts as a quick tutorial.