faker-ruby/faker · error · ArgumentError

There is no #{DAYS_OF_WEEK[date.wday].capitalize} between #{

Error message

There is no #{DAYS_OF_WEEK[date.wday].capitalize} between #{from} and #{to}. Increase the from/to date range or choose a different day of the week.

What it means

Error "There is no #{DAYS_OF_WEEK[date.wday].capitalize} between #{from} and #{to}. Increase the from/to date range or choose a different day of the week." thrown in faker-ruby/faker.

Source

Thrown at lib/faker/default/date.rb:179

        numeric_weekdays = days.map do |d|
          DAYS_OF_WEEK.index(d.to_sym.downcase) || raise(ArgumentError, "#{d} is not a valid day of the week")
        end

        from = get_date_object(from)
        to   = get_date_object(to)
        date = Faker::Base.rand_in_range(from, to)

        # If the initial date is not on one of the wanted days of the week...
        unless numeric_weekdays.include? date.wday
          # ...pick a date nearby that is on one of the wanted days of the week instead
          date += sample(numeric_weekdays) - date.wday

          # Move date 1 week earlier or later if the adjusted date is now outside the date range
          date += 7 if date < from
          date -= 7 if date > to

          if date > to || date < from
            raise ArgumentError,
                  "There is no #{DAYS_OF_WEEK[date.wday].capitalize} between #{from} and #{to}. Increase the from/to date range or choose a different day of the week."
          end
        end

        date
      end

      private

      def birthday_date(date, age)
        year = date.year - age

        day =
          if date.day == 29 && date.month == 2 && !::Date.leap?(year)
            28
          else
            date.day
          end

View on GitHub (pinned to cca4184947)

When it happens

Trigger: Thrown at lib/faker/default/date.rb:179 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of faker-ruby/faker@cca4184947 (2026-08-21). Data as JSON: /api/errors/7aea7548445cc0c1. Report an issue: GitHub.