Class: WeekPeriod

Inherits:
Object
  • Object
show all
Defined in:
lib/week_period.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(week_number:, year:) ⇒ WeekPeriod

Returns a new instance of WeekPeriod.



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# File 'lib/week_period.rb', line 11

def initialize(week_number:, year:)
  @week_number = week_number.to_i
  @year = year.to_i
  validate_week_number
  validate_year
  @date_on_first_day_of_week = Date.commercial(@year, @week_number)
end

Instance Attribute Details

#date_on_first_day_of_week ⇒ Object (readonly)

Returns the value of attribute date_on_first_day_of_week.



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# File 'lib/week_period.rb', line 4

def date_on_first_day_of_week
  @date_on_first_day_of_week
end

#week_number ⇒ Object (readonly)

Returns the value of attribute week_number.



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# File 'lib/week_period.rb', line 4

def week_number
  @week_number
end

#year ⇒ Object (readonly)

Returns the value of attribute year.



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# File 'lib/week_period.rb', line 4

def year
  @year
end

Class Method Details

.from_date(date) ⇒ Object 



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# File 'lib/week_period.rb', line 6

def self.from_date(date)
  date = date.to_date
  new(week_number: date.cweek, year: date.cwyear)
end

Instance Method Details

#last_day_of_week ⇒ Object

The date of last day of the week (a Sunday)



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# File 'lib/week_period.rb', line 37

def last_day_of_week
  @last_day_of_week ||= (date_on_first_day_of_week + 1.week - 1.minute).to_date
end

#next ⇒ Object 



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# File 'lib/week_period.rb', line 19

def next
  self.class.from_date(date_on_first_day_of_week + 1.week)
end

#previous ⇒ Object 



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# File 'lib/week_period.rb', line 23

def previous
  self.class.from_date(date_on_first_day_of_week - 1.week)
end

#to_a ⇒ Object 



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# File 'lib/week_period.rb', line 27

def to_a
  [week_number, year]
end

#to_h ⇒ Object 



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# File 'lib/week_period.rb', line 51

def to_h
  {
    year: year,
    week_number: week_number
  }
end

#to_s ⇒ Object 



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# File 'lib/week_period.rb', line 31

def to_s
  "#{I18n.l(date_on_first_day_of_week, format: :long)} " \
  "to #{I18n.l(last_day_of_week, format: :long)}"
end

#validate_week_number ⇒ Object 



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# File 'lib/week_period.rb', line 41

def validate_week_number
  if week_number < 1 || week_number > 53
    raise(ArgumentError, "invalid date: week_number must be 1-53")
  end
end

#validate_year ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/week_period.rb', line 47

def validate_year
  raise(ArgumentError, "invalid date year must be >= 2000") if year <= 2000
end