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

weekend_days = [0,6]
if (self.start_date.to_date..self.end_date.to_date).to_a.select {|k| weekend_days.include?(k.wday)}.present?
  # you code
end

Answer 2

since rails v5:

Date.current.on_weekend?

References:

• api-doc
• rails docu

Answer 3

TFM shows an interesting way to identifying the day of the week:

t = Time.now
t.saturday?    #=> returns a boolean value
t.sunday?      #=> returns a boolean value

Answer 4

class Time
  def is_weekend?
    [0, 6, 7].include?(wday)
  end
end

time = Time.new

puts "Current Time : " + time.inspect
puts time.is_weekend?

Answer 5

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).

Answer 6

Date.today.instance_eval { saturday? || sunday? }