Class: Timely::DateChooser

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

Constant Summary collapse

INTERVALS =

Where is this used… so far only in one place, _date_range.html.haml May be good to refactor this as well, after the class behaviour is refactored.

[
  { code: 'week', name: 'week(s)', description: 'Weekdays selected will be chosen every {{n}} weeks for the date range' },
  { code: 'week_of_month', name: 'week of month', description:           'Weekdays selected will be chosen in their {{ord}} occurance every month,
      e.g. if wednesday and thursday are selected, the first wednesday and
      first thursday are selected. Note: this may mean the booking is copied
      to Thursday 1st and Wednesday 7th' }
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ DateChooser

Returns a new instance of DateChooser.



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# File 'lib/timely/date_chooser.rb', line 17

def initialize(options)
  @multiple_dates = options[:multiple_dates] || false
  @from     = process_date(options[:from])
  @to       = process_date(options[:to])
  @select   = options[:select]
  @dates    = options[:dates]
  @specific_dates = options[:specific_dates]
  @interval = options[:interval]
  @weekdays = WeekDays.new(options[:weekdays]) if @select == 'weekdays'
  validate
end

Instance Attribute Details

#dates ⇒ Object

Returns the value of attribute dates.



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# File 'lib/timely/date_chooser.rb', line 15

def dates
  @dates
end

#from ⇒ Object

Returns the value of attribute from.



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# File 'lib/timely/date_chooser.rb', line 15

def from
  @from
end

#interval ⇒ Object

Returns the value of attribute interval.



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# File 'lib/timely/date_chooser.rb', line 15

def interval
  @interval
end

#multiple_dates ⇒ Object

Returns the value of attribute multiple_dates.



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# File 'lib/timely/date_chooser.rb', line 15

def multiple_dates
  @multiple_dates
end

#select ⇒ Object

Returns the value of attribute select.



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# File 'lib/timely/date_chooser.rb', line 15

def select
  @select
end

#to ⇒ Object

Returns the value of attribute to.



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# File 'lib/timely/date_chooser.rb', line 15

def to
  @to
end

#weekdays ⇒ Object

Returns the value of attribute weekdays.



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# File 'lib/timely/date_chooser.rb', line 15

def weekdays
  @weekdays
end

Instance Method Details

#choose_dates ⇒ Object

Chooses a set of dates from a date range, based on conditions. date_info - A hash with conditions and date information

:from     - The start of the date range
:to       - The end of the date range

You can either specify specific dates to be chosen each month:

:dates          - A comma separated string of days of the month, e.g. 1,16
:specific_dates - A comma separated string of dates, e.g. 26-10-2012, 03-11-2012, 01-01-2013

or you can specify how to select the dates

:day      - A hash of days, the index being the wday, e.g. 0 = sunday, and the value being 1 if chosen
:interval - A hash of information about the interval
  :level  - The level/multiplier of the interval unit
  :unit   - The unit of the interval, e.g. w for week, mow for month of week
  e.g. :level => 2, :unit => w would try to select the days of the week every fortnight,
       so every friday and saturday each fornight



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# File 'lib/timely/date_chooser.rb', line 54

def choose_dates
  # Not multiple dates - just return the From date.
  return [@from] unless @multiple_dates

  # Multiple dates - return the array, adjusted as per input
  all_days = (@from..@to).to_a

  case @select
  when 'days'
    days = @dates.gsub(/\s/, '').split(',')
    all_days.select { |date| days.include?(date.mday.to_s) }
  when 'specific_days'
    days = @specific_dates.gsub(/\s/, '').split(',')
    days.map(&:to_date)
  when 'weekdays'
    raise DateChooserException, 'No days of the week selected' if @weekdays.weekdays.empty?
    raise DateChooserException, 'No weekly interval selected' if @interval&.empty?

    all_days.select do |date|
      next unless @weekdays.has_day?(date.wday)

      case @interval[:unit]
      when 'week'
        # 0 = first week, 1 = second week, 2 = third week, etc.
        nth_week = (date - @from).to_i / 7
        # true every 2nd week (0, 2, 4, 6, etc.)
        (nth_week % @interval[:level].to_i).zero?
      when 'week_of_month'
        week = @interval[:level].to_i
        (date.mday > (week - 1) * 7 && date.mday <= week * 7)
      end
    end
  else
    all_days
  end
end

#process_date(date) ⇒ Object 



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# File 'lib/timely/date_chooser.rb', line 29

def process_date(date)
  case date
  when Date then date
  when NilClass then nil
  when String
    date !~ /[^[:space:]]/ ? nil : date.to_date
  end
end