Ruby, check if date is a weekend?

Question

I have a DailyQuote model in my rails application which has a date and price for a stock. Data in the database has been captured for this model

Answer 1

require 'date'
today = Date.today
ask_price_for = (today.wday == 6) ? today - 1 : (today.wday == 0) ? today - 2 : today

or

require 'date'
today = Date.today
ask_price_for = (today.saturday?) ? today - 1 : (today.sunday?) ? today - 2 : today  

ask_price_for now holds a date for which you would want to ask the price for.

Getting the actual price which is corresponding to you date depends on your Model and your ORM-Library (i.e. ActiveRecord).