Module: Metricdeck::Helpers::DateHelpers

Defined in:
lib/metricdeck/helpers/date_helpers.rb

Instance Method Summary collapse

Instance Method Details

#calculate_previous_period(start_date, end_date, comparison_period = :previous) ⇒ Object 



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# File 'lib/metricdeck/helpers/date_helpers.rb', line 25

def calculate_previous_period(start_date, end_date, comparison_period = :previous)
  period_length = (end_date - start_date).to_i + 1

  case comparison_period.to_sym
  when :month, :last_month
    prev_start_date = start_date.prev_month
    prev_end_date = [end_date.prev_month, prev_start_date.end_of_month].min
  when :year, :last_year
    prev_start_date = start_date.prev_year
    prev_end_date = end_date.prev_year
  else
    prev_start_date = start_date - period_length.days
    prev_end_date = end_date - period_length.days
  end

  [prev_start_date, prev_end_date]
end

#generate_comparison_text(comparison_period) ⇒ Object 



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# File 'lib/metricdeck/helpers/date_helpers.rb', line 43

def generate_comparison_text(comparison_period)
  period = comparison_period.to_sym if comparison_period.respond_to?(:to_sym)

  comparison_key = case period
                   when :month, :last_month
                     :last_month
                   when :year, :last_year
                     :last_year
                   else
                     :previous_period
                   end

  I18n.t("metricdeck.comparisons.#{comparison_key}")
end

#parse_date_with_formats(date_str) ⇒ Object 



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# File 'lib/metricdeck/helpers/date_helpers.rb', line 6

def parse_date_with_formats(date_str)
  return nil if date_str.blank?
  return date_str if date_str.is_a?(Date)

  formats = ['%d-%m-%Y', '%Y-%m-%d', '%m/%d/%Y', '%d/%m/%Y']

  formats.each do |format|
    return Date.strptime(date_str.to_s, format)
  rescue Date::Error
    next
  end

  begin
    Date.parse(date_str.to_s)
  rescue Date::Error
    nil
  end
end