require 'date'
require 'action_view/helpers/tag_helper'
require 'active_support/core_ext/array/extract_options'
require 'active_support/core_ext/date/conversions'
require 'active_support/core_ext/hash/slice'
require 'active_support/core_ext/object/with_options'
module ActionView
module Helpers
# = Action View Date Helpers
#
# The Date Helper primarily creates select/option tags for different kinds of dates and times or date and time
# elements. All of the select-type methods share a number of common options that are as follows:
#
# * :prefix - overwrites the default prefix of "date" used for the select names. So specifying "birthday"
# would give \birthday[month] instead of \date[month] if passed to the select_month method.
# * :include_blank - set to true if it should be possible to set an empty date.
# * :discard_type - set to true if you want to discard the type part of the select name. If set to true,
# the select_month method would use simply "date" (which can be overwritten using :prefix) instead
# of \date[month].
module DateHelper
MINUTES_IN_YEAR = 525600
MINUTES_IN_QUARTER_YEAR = 131400
MINUTES_IN_THREE_QUARTERS_YEAR = 394200
# Reports the approximate distance in time between two Time, Date or DateTime objects or integers as seconds.
# Pass include_seconds: true if you want more detailed approximations when distance < 1 min, 29 secs.
# Distances are reported based on the following table:
#
# 0 <-> 29 secs # => less than a minute
# 30 secs <-> 1 min, 29 secs # => 1 minute
# 1 min, 30 secs <-> 44 mins, 29 secs # => [2..44] minutes
# 44 mins, 30 secs <-> 89 mins, 29 secs # => about 1 hour
# 89 mins, 30 secs <-> 23 hrs, 59 mins, 29 secs # => about [2..24] hours
# 23 hrs, 59 mins, 30 secs <-> 41 hrs, 59 mins, 29 secs # => 1 day
# 41 hrs, 59 mins, 30 secs <-> 29 days, 23 hrs, 59 mins, 29 secs # => [2..29] days
# 29 days, 23 hrs, 59 mins, 30 secs <-> 44 days, 23 hrs, 59 mins, 29 secs # => about 1 month
# 44 days, 23 hrs, 59 mins, 30 secs <-> 59 days, 23 hrs, 59 mins, 29 secs # => about 2 months
# 59 days, 23 hrs, 59 mins, 30 secs <-> 1 yr minus 1 sec # => [2..12] months
# 1 yr <-> 1 yr, 3 months # => about 1 year
# 1 yr, 3 months <-> 1 yr, 9 months # => over 1 year
# 1 yr, 9 months <-> 2 yr minus 1 sec # => almost 2 years
# 2 yrs <-> max time or date # => (same rules as 1 yr)
#
# With include_seconds: true and the difference < 1 minute 29 seconds:
# 0-4 secs # => less than 5 seconds
# 5-9 secs # => less than 10 seconds
# 10-19 secs # => less than 20 seconds
# 20-39 secs # => half a minute
# 40-59 secs # => less than a minute
# 60-89 secs # => 1 minute
#
# from_time = Time.now
# distance_of_time_in_words(from_time, from_time + 50.minutes) # => about 1 hour
# distance_of_time_in_words(from_time, 50.minutes.from_now) # => about 1 hour
# distance_of_time_in_words(from_time, from_time + 15.seconds) # => less than a minute
# distance_of_time_in_words(from_time, from_time + 15.seconds, include_seconds: true) # => less than 20 seconds
# distance_of_time_in_words(from_time, 3.years.from_now) # => about 3 years
# distance_of_time_in_words(from_time, from_time + 60.hours) # => 3 days
# distance_of_time_in_words(from_time, from_time + 45.seconds, include_seconds: true) # => less than a minute
# distance_of_time_in_words(from_time, from_time - 45.seconds, include_seconds: true) # => less than a minute
# distance_of_time_in_words(from_time, 76.seconds.from_now) # => 1 minute
# distance_of_time_in_words(from_time, from_time + 1.year + 3.days) # => about 1 year
# distance_of_time_in_words(from_time, from_time + 3.years + 6.months) # => over 3 years
# distance_of_time_in_words(from_time, from_time + 4.years + 9.days + 30.minutes + 5.seconds) # => about 4 years
#
# to_time = Time.now + 6.years + 19.days
# distance_of_time_in_words(from_time, to_time, include_seconds: true) # => about 6 years
# distance_of_time_in_words(to_time, from_time, include_seconds: true) # => about 6 years
# distance_of_time_in_words(Time.now, Time.now) # => less than a minute
def distance_of_time_in_words(from_time, to_time = 0, options = {})
options = {
scope: :'datetime.distance_in_words'
}.merge!(options)
from_time = from_time.to_time if from_time.respond_to?(:to_time)
to_time = to_time.to_time if to_time.respond_to?(:to_time)
from_time, to_time = to_time, from_time if from_time > to_time
distance_in_minutes = ((to_time - from_time)/60.0).round
distance_in_seconds = (to_time - from_time).round
I18n.with_options :locale => options[:locale], :scope => options[:scope] do |locale|
case distance_in_minutes
when 0..1
return distance_in_minutes == 0 ?
locale.t(:less_than_x_minutes, :count => 1) :
locale.t(:x_minutes, :count => distance_in_minutes) unless options[:include_seconds]
case distance_in_seconds
when 0..4 then locale.t :less_than_x_seconds, :count => 5
when 5..9 then locale.t :less_than_x_seconds, :count => 10
when 10..19 then locale.t :less_than_x_seconds, :count => 20
when 20..39 then locale.t :half_a_minute
when 40..59 then locale.t :less_than_x_minutes, :count => 1
else locale.t :x_minutes, :count => 1
end
when 2...45 then locale.t :x_minutes, :count => distance_in_minutes
when 45...90 then locale.t :about_x_hours, :count => 1
# 90 mins up to 24 hours
when 90...1440 then locale.t :about_x_hours, :count => (distance_in_minutes.to_f / 60.0).round
# 24 hours up to 42 hours
when 1440...2520 then locale.t :x_days, :count => 1
# 42 hours up to 30 days
when 2520...43200 then locale.t :x_days, :count => (distance_in_minutes.to_f / 1440.0).round
# 30 days up to 60 days
when 43200...86400 then locale.t :about_x_months, :count => (distance_in_minutes.to_f / 43200.0).round
# 60 days up to 365 days
when 86400...525600 then locale.t :x_months, :count => (distance_in_minutes.to_f / 43200.0).round
else
if from_time.acts_like?(:time) && to_time.acts_like?(:time)
fyear = from_time.year
fyear += 1 if from_time.month >= 3
tyear = to_time.year
tyear -= 1 if to_time.month < 3
leap_years = (fyear > tyear) ? 0 : (fyear..tyear).count{|x| Date.leap?(x)}
minute_offset_for_leap_year = leap_years * 1440
# Discount the leap year days when calculating year distance.
# e.g. if there are 20 leap year days between 2 dates having the same day
# and month then the based on 365 days calculation
# the distance in years will come out to over 80 years when in written
# English it would read better as about 80 years.
minutes_with_offset = distance_in_minutes - minute_offset_for_leap_year
else
minutes_with_offset = distance_in_minutes
end
remainder = (minutes_with_offset % MINUTES_IN_YEAR)
distance_in_years = (minutes_with_offset.div MINUTES_IN_YEAR)
if remainder < MINUTES_IN_QUARTER_YEAR
locale.t(:about_x_years, :count => distance_in_years)
elsif remainder < MINUTES_IN_THREE_QUARTERS_YEAR
locale.t(:over_x_years, :count => distance_in_years)
else
locale.t(:almost_x_years, :count => distance_in_years + 1)
end
end
end
end
# Like distance_of_time_in_words, but where to_time is fixed to Time.now.
#
# time_ago_in_words(3.minutes.from_now) # => 3 minutes
# time_ago_in_words(3.minutes.ago) # => 3 minutes
# time_ago_in_words(Time.now - 15.hours) # => about 15 hours
# time_ago_in_words(Time.now) # => less than a minute
# time_ago_in_words(Time.now, include_seconds: true) # => less than 5 seconds
#
# from_time = Time.now - 3.days - 14.minutes - 25.seconds
# time_ago_in_words(from_time) # => 3 days
#
# from_time = (3.days + 14.minutes + 25.seconds).ago
# time_ago_in_words(from_time) # => 3 days
#
# Note that you cannot pass a Numeric value to time_ago_in_words.
#
def time_ago_in_words(from_time, options = {})
distance_of_time_in_words(from_time, Time.now, options)
end
alias_method :distance_of_time_in_words_to_now, :time_ago_in_words
# Returns a set of select tags (one for year, month, and day) pre-selected for accessing a specified date-based
# attribute (identified by +method+) on an object assigned to the template (identified by +object+).
#
# ==== Options
# * :use_month_numbers - Set to true if you want to use month numbers rather than month names (e.g.
# "2" instead of "February").
# * :use_two_digit_numbers - Set to true if you want to display two digit month and day numbers (e.g.
# "02" instead of "February" and "08" instead of "8").
# * :use_short_month - Set to true if you want to use abbreviated month names instead of full
# month names (e.g. "Feb" instead of "February").
# * :add_month_numbers - Set to true if you want to use both month numbers and month names (e.g.
# "2 - February" instead of "February").
# * :use_month_names - Set to an array with 12 month names if you want to customize month names.
# Note: You can also use Rails' i18n functionality for this.
# * :month_format_string - Set to a format string. The string gets passed keys +:number+ (integer)
# and +:name+ (string). A format string would be something like "%{name} (%02d)" for example.
# See Kernel.sprintf for documentation on format sequences.
# * :date_separator - Specifies a string to separate the date fields. Default is "" (i.e. nothing).
# * :time_separator - Specifies a string to separate the time fields. Default is "" (i.e. nothing).
# * :datetime_separator- Specifies a string to separate the date and time fields. Default is "" (i.e. nothing).
# * :start_year - Set the start year for the year select. Default is Date.today.year - 5 if
# you are creating new record. While editing existing record, :start_year defaults to
# the current selected year minus 5.
# * :end_year - Set the end year for the year select. Default is Date.today.year + 5 if
# you are creating new record. While editing existing record, :end_year defaults to
# the current selected year plus 5.
# * :discard_day - Set to true if you don't want to show a day select. This includes the day
# as a hidden field instead of showing a select field. Also note that this implicitly sets the day to be the
# first of the given month in order to not create invalid dates like 31 February.
# * :discard_month - Set to true if you don't want to show a month select. This includes the month
# as a hidden field instead of showing a select field. Also note that this implicitly sets :discard_day to true.
# * :discard_year - Set to true if you don't want to show a year select. This includes the year
# as a hidden field instead of showing a select field.
# * :order - Set to an array containing :day, :month and :year to
# customize the order in which the select fields are shown. If you leave out any of the symbols, the respective
# select will not be shown (like when you set discard_xxx: true. Defaults to the order defined in
# the respective locale (e.g. [:year, :month, :day] in the en locale that ships with Rails).
# * :include_blank - Include a blank option in every select field so it's possible to set empty
# dates.
# * :default - Set a default date if the affected date isn't set or is nil.
# * :selected - Set a date that overrides the actual value.
# * :disabled - Set to true if you want show the select fields as disabled.
# * :prompt - Set to true (for a generic prompt), a prompt string or a hash of prompt strings
# for :year, :month, :day, :hour, :minute and :second.
# Setting this option prepends a select option with a generic prompt (Day, Month, Year, Hour, Minute, Seconds)
# or the given prompt string.
# * :with_css_classes - Set to true if you want assign different styles for 'select' tags. This option
# automatically set classes 'year', 'month', 'day', 'hour', 'minute' and 'second' for your 'select' tags.
#
# If anything is passed in the +html_options+ hash it will be applied to every select tag in the set.
#
# NOTE: Discarded selects will default to 1. So if no month select is available, January will be assumed.
#
# # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute.
# date_select("article", "written_on")
#
# # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute,
# # with the year in the year drop down box starting at 1995.
# date_select("article", "written_on", start_year: 1995)
#
# # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute,
# # with the year in the year drop down box starting at 1995, numbers used for months instead of words,
# # and without a day select box.
# date_select("article", "written_on", start_year: 1995, use_month_numbers: true,
# discard_day: true, include_blank: true)
#
# # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute,
# # with two digit numbers used for months and days.
# date_select("article", "written_on", use_two_digit_numbers: true)
#
# # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute
# # with the fields ordered as day, month, year rather than month, day, year.
# date_select("article", "written_on", order: [:day, :month, :year])
#
# # Generates a date select that when POSTed is stored in the user variable, in the birthday attribute
# # lacking a year field.
# date_select("user", "birthday", order: [:month, :day])
#
# # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute
# # which is initially set to the date 3 days from the current date
# date_select("article", "written_on", default: 3.days.from_now)
#
# # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute
# # which is set in the form with todays date, regardless of the value in the Active Record object.
# date_select("article", "written_on", selected: Date.today)
#
# # Generates a date select that when POSTed is stored in the credit_card variable, in the bill_due attribute
# # that will have a default day of 20.
# date_select("credit_card", "bill_due", default: { day: 20 })
#
# # Generates a date select with custom prompts.
# date_select("article", "written_on", prompt: { day: 'Select day', month: 'Select month', year: 'Select year' })
#
# The selects are prepared for multi-parameter assignment to an Active Record object.
#
# Note: If the day is not included as an option but the month is, the day will be set to the 1st to ensure that
# all month choices are valid.
def date_select(object_name, method, options = {}, html_options = {})
Tags::DateSelect.new(object_name, method, self, options, html_options).render
end
# Returns a set of select tags (one for hour, minute and optionally second) pre-selected for accessing a
# specified time-based attribute (identified by +method+) on an object assigned to the template (identified by
# +object+). You can include the seconds with :include_seconds. You can get hours in the AM/PM format
# with :ampm option.
#
# This method will also generate 3 input hidden tags, for the actual year, month and day unless the option
# :ignore_date is set to +true+. If you set the :ignore_date to +true+, you must have a
# +date_select+ on the same method within the form otherwise an exception will be raised.
#
# If anything is passed in the html_options hash it will be applied to every select tag in the set.
#
# # Creates a time select tag that, when POSTed, will be stored in the article variable in the sunrise attribute.
# time_select("article", "sunrise")
#
# # Creates a time select tag with a seconds field that, when POSTed, will be stored in the article variables in
# # the sunrise attribute.
# time_select("article", "start_time", include_seconds: true)
#
# # You can set the :minute_step to 15 which will give you: 00, 15, 30 and 45.
# time_select 'game', 'game_time', {minute_step: 15}
#
# # Creates a time select tag with a custom prompt. Use prompt: true for generic prompts.
# time_select("article", "written_on", prompt: {hour: 'Choose hour', minute: 'Choose minute', second: 'Choose seconds'})
# time_select("article", "written_on", prompt: {hour: true}) # generic prompt for hours
# time_select("article", "written_on", prompt: true) # generic prompts for all
#
# # You can set :ampm option to true which will show the hours as: 12 PM, 01 AM .. 11 PM.
# time_select 'game', 'game_time', {ampm: true}
#
# The selects are prepared for multi-parameter assignment to an Active Record object.
#
# Note: If the day is not included as an option but the month is, the day will be set to the 1st to ensure that
# all month choices are valid.
def time_select(object_name, method, options = {}, html_options = {})
Tags::TimeSelect.new(object_name, method, self, options, html_options).render
end
# Returns a set of select tags (one for year, month, day, hour, and minute) pre-selected for accessing a
# specified datetime-based attribute (identified by +method+) on an object assigned to the template (identified
# by +object+).
#
# If anything is passed in the html_options hash it will be applied to every select tag in the set.
#
# # Generates a datetime select that, when POSTed, will be stored in the article variable in the written_on
# # attribute.
# datetime_select("article", "written_on")
#
# # Generates a datetime select with a year select that starts at 1995 that, when POSTed, will be stored in the
# # article variable in the written_on attribute.
# datetime_select("article", "written_on", start_year: 1995)
#
# # Generates a datetime select with a default value of 3 days from the current time that, when POSTed, will
# # be stored in the trip variable in the departing attribute.
# datetime_select("trip", "departing", default: 3.days.from_now)
#
# # Generate a datetime select with hours in the AM/PM format
# datetime_select("article", "written_on", ampm: true)
#
# # Generates a datetime select that discards the type that, when POSTed, will be stored in the article variable
# # as the written_on attribute.
# datetime_select("article", "written_on", discard_type: true)
#
# # Generates a datetime select with a custom prompt. Use prompt: true for generic prompts.
# datetime_select("article", "written_on", prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'})
# datetime_select("article", "written_on", prompt: {hour: true}) # generic prompt for hours
# datetime_select("article", "written_on", prompt: true) # generic prompts for all
#
# The selects are prepared for multi-parameter assignment to an Active Record object.
def datetime_select(object_name, method, options = {}, html_options = {})
Tags::DatetimeSelect.new(object_name, method, self, options, html_options).render
end
# Returns a set of HTML select-tags (one for year, month, day, hour, minute, and second) pre-selected with the
# +datetime+. It's also possible to explicitly set the order of the tags using the :order option with
# an array of symbols :year, :month and :day in the desired order. If you do not
# supply a Symbol, it will be appended onto the :order passed in. You can also add
# :date_separator, :datetime_separator and :time_separator keys to the +options+ to
# control visual display of the elements.
#
# If anything is passed in the html_options hash it will be applied to every select tag in the set.
#
# my_date_time = Time.now + 4.days
#
# # Generates a datetime select that defaults to the datetime in my_date_time (four days after today).
# select_datetime(my_date_time)
#
# # Generates a datetime select that defaults to today (no specified datetime)
# select_datetime()
#
# # Generates a datetime select that defaults to the datetime in my_date_time (four days after today)
# # with the fields ordered year, month, day rather than month, day, year.
# select_datetime(my_date_time, order: [:year, :month, :day])
#
# # Generates a datetime select that defaults to the datetime in my_date_time (four days after today)
# # with a '/' between each date field.
# select_datetime(my_date_time, date_separator: '/')
#
# # Generates a datetime select that defaults to the datetime in my_date_time (four days after today)
# # with a date fields separated by '/', time fields separated by '' and the date and time fields
# # separated by a comma (',').
# select_datetime(my_date_time, date_separator: '/', time_separator: '', datetime_separator: ',')
#
# # Generates a datetime select that discards the type of the field and defaults to the datetime in
# # my_date_time (four days after today)
# select_datetime(my_date_time, discard_type: true)
#
# # Generate a datetime field with hours in the AM/PM format
# select_datetime(my_date_time, ampm: true)
#
# # Generates a datetime select that defaults to the datetime in my_date_time (four days after today)
# # prefixed with 'payday' rather than 'date'
# select_datetime(my_date_time, prefix: 'payday')
#
# # Generates a datetime select with a custom prompt. Use prompt: true for generic prompts.
# select_datetime(my_date_time, prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'})
# select_datetime(my_date_time, prompt: {hour: true}) # generic prompt for hours
# select_datetime(my_date_time, prompt: true) # generic prompts for all
def select_datetime(datetime = Time.current, options = {}, html_options = {})
DateTimeSelector.new(datetime, options, html_options).select_datetime
end
# Returns a set of HTML select-tags (one for year, month, and day) pre-selected with the +date+.
# It's possible to explicitly set the order of the tags using the :order option with an array of
# symbols :year, :month and :day in the desired order.
# If the array passed to the :order option does not contain all the three symbols, all tags will be hidden.
#
# If anything is passed in the html_options hash it will be applied to every select tag in the set.
#
# my_date = Time.now + 6.days
#
# # Generates a date select that defaults to the date in my_date (six days after today).
# select_date(my_date)
#
# # Generates a date select that defaults to today (no specified date).
# select_date()
#
# # Generates a date select that defaults to the date in my_date (six days after today)
# # with the fields ordered year, month, day rather than month, day, year.
# select_date(my_date, order: [:year, :month, :day])
#
# # Generates a date select that discards the type of the field and defaults to the date in
# # my_date (six days after today).
# select_date(my_date, discard_type: true)
#
# # Generates a date select that defaults to the date in my_date,
# # which has fields separated by '/'.
# select_date(my_date, date_separator: '/')
#
# # Generates a date select that defaults to the datetime in my_date (six days after today)
# # prefixed with 'payday' rather than 'date'.
# select_date(my_date, prefix: 'payday')
#
# # Generates a date select with a custom prompt. Use prompt: true for generic prompts.
# select_date(my_date, prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'})
# select_date(my_date, prompt: {hour: true}) # generic prompt for hours
# select_date(my_date, prompt: true) # generic prompts for all
def select_date(date = Date.current, options = {}, html_options = {})
DateTimeSelector.new(date, options, html_options).select_date
end
# Returns a set of HTML select-tags (one for hour and minute).
# You can set :time_separator key to format the output, and
# the :include_seconds option to include an input for seconds.
#
# If anything is passed in the html_options hash it will be applied to every select tag in the set.
#
# my_time = Time.now + 5.days + 7.hours + 3.minutes + 14.seconds
#
# # Generates a time select that defaults to the time in my_time.
# select_time(my_time)
#
# # Generates a time select that defaults to the current time (no specified time).
# select_time()
#
# # Generates a time select that defaults to the time in my_time,
# # which has fields separated by ':'.
# select_time(my_time, time_separator: ':')
#
# # Generates a time select that defaults to the time in my_time,
# # that also includes an input for seconds.
# select_time(my_time, include_seconds: true)
#
# # Generates a time select that defaults to the time in my_time, that has fields
# # separated by ':' and includes an input for seconds.
# select_time(my_time, time_separator: ':', include_seconds: true)
#
# # Generate a time select field with hours in the AM/PM format
# select_time(my_time, ampm: true)
#
# # Generates a time select field with hours that range from 2 to 14
# select_time(my_time, start_hour: 2, end_hour: 14)
#
# # Generates a time select with a custom prompt. Use :prompt to true for generic prompts.
# select_time(my_time, prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'})
# select_time(my_time, prompt: {hour: true}) # generic prompt for hours
# select_time(my_time, prompt: true) # generic prompts for all
def select_time(datetime = Time.current, options = {}, html_options = {})
DateTimeSelector.new(datetime, options, html_options).select_time
end
# Returns a select tag with options for each of the seconds 0 through 59 with the current second selected.
# The datetime can be either a +Time+ or +DateTime+ object or an integer.
# Override the field name using the :field_name option, 'second' by default.
#
# my_time = Time.now + 16.minutes
#
# # Generates a select field for seconds that defaults to the seconds for the time in my_time.
# select_second(my_time)
#
# # Generates a select field for seconds that defaults to the number given.
# select_second(33)
#
# # Generates a select field for seconds that defaults to the seconds for the time in my_time
# # that is named 'interval' rather than 'second'.
# select_second(my_time, field_name: 'interval')
#
# # Generates a select field for seconds with a custom prompt. Use prompt: true for a
# # generic prompt.
# select_second(14, prompt: 'Choose seconds')
def select_second(datetime, options = {}, html_options = {})
DateTimeSelector.new(datetime, options, html_options).select_second
end
# Returns a select tag with options for each of the minutes 0 through 59 with the current minute selected.
# Also can return a select tag with options by minute_step from 0 through 59 with the 00 minute
# selected. The datetime can be either a +Time+ or +DateTime+ object or an integer.
# Override the field name using the :field_name option, 'minute' by default.
#
# my_time = Time.now + 10.minutes
#
# # Generates a select field for minutes that defaults to the minutes for the time in my_time.
# select_minute(my_time)
#
# # Generates a select field for minutes that defaults to the number given.
# select_minute(14)
#
# # Generates a select field for minutes that defaults to the minutes for the time in my_time
# # that is named 'moment' rather than 'minute'.
# select_minute(my_time, field_name: 'moment')
#
# # Generates a select field for minutes with a custom prompt. Use prompt: true for a
# # generic prompt.
# select_minute(14, prompt: 'Choose minutes')
def select_minute(datetime, options = {}, html_options = {})
DateTimeSelector.new(datetime, options, html_options).select_minute
end
# Returns a select tag with options for each of the hours 0 through 23 with the current hour selected.
# The datetime can be either a +Time+ or +DateTime+ object or an integer.
# Override the field name using the :field_name option, 'hour' by default.
#
# my_time = Time.now + 6.hours
#
# # Generates a select field for hours that defaults to the hour for the time in my_time.
# select_hour(my_time)
#
# # Generates a select field for hours that defaults to the number given.
# select_hour(13)
#
# # Generates a select field for hours that defaults to the hour for the time in my_time
# # that is named 'stride' rather than 'hour'.
# select_hour(my_time, field_name: 'stride')
#
# # Generates a select field for hours with a custom prompt. Use prompt: true for a
# # generic prompt.
# select_hour(13, prompt: 'Choose hour')
#
# # Generate a select field for hours in the AM/PM format
# select_hour(my_time, ampm: true)
#
# # Generates a select field that includes options for hours from 2 to 14.
# select_hour(my_time, start_hour: 2, end_hour: 14)
def select_hour(datetime, options = {}, html_options = {})
DateTimeSelector.new(datetime, options, html_options).select_hour
end
# Returns a select tag with options for each of the days 1 through 31 with the current day selected.
# The date can also be substituted for a day number.
# If you want to display days with a leading zero set the :use_two_digit_numbers key in +options+ to true.
# Override the field name using the :field_name option, 'day' by default.
#
# my_date = Time.now + 2.days
#
# # Generates a select field for days that defaults to the day for the date in my_date.
# select_day(my_date)
#
# # Generates a select field for days that defaults to the number given.
# select_day(5)
#
# # Generates a select field for days that defaults to the number given, but displays it with two digits.
# select_day(5, use_two_digit_numbers: true)
#
# # Generates a select field for days that defaults to the day for the date in my_date
# # that is named 'due' rather than 'day'.
# select_day(my_date, field_name: 'due')
#
# # Generates a select field for days with a custom prompt. Use prompt: true for a
# # generic prompt.
# select_day(5, prompt: 'Choose day')
def select_day(date, options = {}, html_options = {})
DateTimeSelector.new(date, options, html_options).select_day
end
# Returns a select tag with options for each of the months January through December with the current month
# selected. The month names are presented as keys (what's shown to the user) and the month numbers (1-12) are
# used as values (what's submitted to the server). It's also possible to use month numbers for the presentation
# instead of names -- set the :use_month_numbers key in +options+ to true for this to happen. If you
# want both numbers and names, set the :add_month_numbers key in +options+ to true. If you would prefer
# to show month names as abbreviations, set the :use_short_month key in +options+ to true. If you want
# to use your own month names, set the :use_month_names key in +options+ to an array of 12 month names.
# If you want to display months with a leading zero set the :use_two_digit_numbers key in +options+ to true.
# Override the field name using the :field_name option, 'month' by default.
#
# # Generates a select field for months that defaults to the current month that
# # will use keys like "January", "March".
# select_month(Date.today)
#
# # Generates a select field for months that defaults to the current month that
# # is named "start" rather than "month".
# select_month(Date.today, field_name: 'start')
#
# # Generates a select field for months that defaults to the current month that
# # will use keys like "1", "3".
# select_month(Date.today, use_month_numbers: true)
#
# # Generates a select field for months that defaults to the current month that
# # will use keys like "1 - January", "3 - March".
# select_month(Date.today, add_month_numbers: true)
#
# # Generates a select field for months that defaults to the current month that
# # will use keys like "Jan", "Mar".
# select_month(Date.today, use_short_month: true)
#
# # Generates a select field for months that defaults to the current month that
# # will use keys like "Januar", "Marts."
# select_month(Date.today, use_month_names: %w(Januar Februar Marts ...))
#
# # Generates a select field for months that defaults to the current month that
# # will use keys with two digit numbers like "01", "03".
# select_month(Date.today, use_two_digit_numbers: true)
#
# # Generates a select field for months with a custom prompt. Use prompt: true for a
# # generic prompt.
# select_month(14, prompt: 'Choose month')
def select_month(date, options = {}, html_options = {})
DateTimeSelector.new(date, options, html_options).select_month
end
# Returns a select tag with options for each of the five years on each side of the current, which is selected.
# The five year radius can be changed using the :start_year and :end_year keys in the
# +options+. Both ascending and descending year lists are supported by making :start_year less than or
# greater than :end_year. The date can also be substituted for a year given as a number.
# Override the field name using the :field_name option, 'year' by default.
#
# # Generates a select field for years that defaults to the current year that
# # has ascending year values.
# select_year(Date.today, start_year: 1992, end_year: 2007)
#
# # Generates a select field for years that defaults to the current year that
# # is named 'birth' rather than 'year'.
# select_year(Date.today, field_name: 'birth')
#
# # Generates a select field for years that defaults to the current year that
# # has descending year values.
# select_year(Date.today, start_year: 2005, end_year: 1900)
#
# # Generates a select field for years that defaults to the year 2006 that
# # has ascending year values.
# select_year(2006, start_year: 2000, end_year: 2010)
#
# # Generates a select field for years with a custom prompt. Use prompt: true for a
# # generic prompt.
# select_year(14, prompt: 'Choose year')
def select_year(date, options = {}, html_options = {})
DateTimeSelector.new(date, options, html_options).select_year
end
# Returns an HTML time tag for the given date or time.
#
# time_tag Date.today # =>
#
# time_tag Time.now # =>
#
# time_tag Date.yesterday, 'Yesterday' # =>
#
# time_tag Date.today, pubdate: true # =>
#
# time_tag Date.today, datetime: Date.today.strftime('%G-W%V') # =>
#
#
# <%= time_tag Time.now do %>
# Right now
# <% end %>
# # =>
def time_tag(date_or_time, *args, &block)
options = args.extract_options!
format = options.delete(:format) || :long
content = args.first || I18n.l(date_or_time, :format => format)
datetime = date_or_time.acts_like?(:time) ? date_or_time.xmlschema : date_or_time.iso8601
content_tag(:time, content, options.reverse_merge(:datetime => datetime), &block)
end
end
class DateTimeSelector #:nodoc:
include ActionView::Helpers::TagHelper
DEFAULT_PREFIX = 'date'.freeze
POSITION = {
:year => 1, :month => 2, :day => 3, :hour => 4, :minute => 5, :second => 6
}.freeze
AMPM_TRANSLATION = Hash[
[[0, "12 AM"], [1, "01 AM"], [2, "02 AM"], [3, "03 AM"],
[4, "04 AM"], [5, "05 AM"], [6, "06 AM"], [7, "07 AM"],
[8, "08 AM"], [9, "09 AM"], [10, "10 AM"], [11, "11 AM"],
[12, "12 PM"], [13, "01 PM"], [14, "02 PM"], [15, "03 PM"],
[16, "04 PM"], [17, "05 PM"], [18, "06 PM"], [19, "07 PM"],
[20, "08 PM"], [21, "09 PM"], [22, "10 PM"], [23, "11 PM"]]
].freeze
def initialize(datetime, options = {}, html_options = {})
@options = options.dup
@html_options = html_options.dup
@datetime = datetime
@options[:datetime_separator] ||= ' — '
@options[:time_separator] ||= ' : '
end
def select_datetime
order = date_order.dup
order -= [:hour, :minute, :second]
@options[:discard_year] ||= true unless order.include?(:year)
@options[:discard_month] ||= true unless order.include?(:month)
@options[:discard_day] ||= true if @options[:discard_month] || !order.include?(:day)
@options[:discard_minute] ||= true if @options[:discard_hour]
@options[:discard_second] ||= true unless @options[:include_seconds] && !@options[:discard_minute]
set_day_if_discarded
if @options[:tag] && @options[:ignore_date]
select_time
else
[:day, :month, :year].each { |o| order.unshift(o) unless order.include?(o) }
order += [:hour, :minute, :second] unless @options[:discard_hour]
build_selects_from_types(order)
end
end
def select_date
order = date_order.dup
@options[:discard_hour] = true
@options[:discard_minute] = true
@options[:discard_second] = true
@options[:discard_year] ||= true unless order.include?(:year)
@options[:discard_month] ||= true unless order.include?(:month)
@options[:discard_day] ||= true if @options[:discard_month] || !order.include?(:day)
set_day_if_discarded
[:day, :month, :year].each { |o| order.unshift(o) unless order.include?(o) }
build_selects_from_types(order)
end
def select_time
order = []
@options[:discard_month] = true
@options[:discard_year] = true
@options[:discard_day] = true
@options[:discard_second] ||= true unless @options[:include_seconds]
order += [:year, :month, :day] unless @options[:ignore_date]
order += [:hour, :minute]
order << :second if @options[:include_seconds]
build_selects_from_types(order)
end
def select_second
if @options[:use_hidden] || @options[:discard_second]
build_hidden(:second, sec) if @options[:include_seconds]
else
build_options_and_select(:second, sec)
end
end
def select_minute
if @options[:use_hidden] || @options[:discard_minute]
build_hidden(:minute, min)
else
build_options_and_select(:minute, min, :step => @options[:minute_step])
end
end
def select_hour
if @options[:use_hidden] || @options[:discard_hour]
build_hidden(:hour, hour)
else
options = {}
options[:ampm] = @options[:ampm] || false
options[:start] = @options[:start_hour] || 0
options[:end] = @options[:end_hour] || 23
build_options_and_select(:hour, hour, options)
end
end
def select_day
if @options[:use_hidden] || @options[:discard_day]
build_hidden(:day, day || 1)
else
build_options_and_select(:day, day, :start => 1, :end => 31, :leading_zeros => false, :use_two_digit_numbers => @options[:use_two_digit_numbers])
end
end
def select_month
if @options[:use_hidden] || @options[:discard_month]
build_hidden(:month, month || 1)
else
month_options = []
1.upto(12) do |month_number|
options = { :value => month_number }
options[:selected] = "selected" if month == month_number
month_options << content_tag(:option, month_name(month_number), options) + "\n"
end
build_select(:month, month_options.join)
end
end
def select_year
if !@datetime || @datetime == 0
val = '1'
middle_year = Date.today.year
else
val = middle_year = year
end
if @options[:use_hidden] || @options[:discard_year]
build_hidden(:year, val)
else
options = {}
options[:start] = @options[:start_year] || middle_year - 5
options[:end] = @options[:end_year] || middle_year + 5
options[:step] = options[:start] < options[:end] ? 1 : -1
options[:leading_zeros] = false
options[:max_years_allowed] = @options[:max_years_allowed] || 1000
if (options[:end] - options[:start]).abs > options[:max_years_allowed]
raise ArgumentError, "There are too many years options to be built. Are you sure you haven't mistyped something? You can provide the :max_years_allowed parameter."
end
build_options_and_select(:year, val, options)
end
end
private
%w( sec min hour day month year ).each do |method|
define_method(method) do
@datetime.kind_of?(Numeric) ? @datetime : @datetime.send(method) if @datetime
end
end
# If the day is hidden, the day should be set to the 1st so all month and year choices are
# valid. Otherwise, February 31st or February 29th, 2011 can be selected, which are invalid.
def set_day_if_discarded
if @datetime && @options[:discard_day]
@datetime = @datetime.change(:day => 1)
end
end
# Returns translated month names, but also ensures that a custom month
# name array has a leading nil element.
def month_names
@month_names ||= begin
month_names = @options[:use_month_names] || translated_month_names
month_names.unshift(nil) if month_names.size < 13
month_names
end
end
# Returns translated month names.
# => [nil, "January", "February", "March",
# "April", "May", "June", "July",
# "August", "September", "October",
# "November", "December"]
#
# If :use_short_month option is set
# => [nil, "Jan", "Feb", "Mar", "Apr", "May", "Jun",
# "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
def translated_month_names
key = @options[:use_short_month] ? :'date.abbr_month_names' : :'date.month_names'
I18n.translate(key, :locale => @options[:locale])
end
# Looks up month names by number (1-based):
#
# month_name(1) # => "January"
#
# If the :use_month_numbers option is passed:
#
# month_name(1) # => 1
#
# If the :use_two_month_numbers option is passed:
#
# month_name(1) # => '01'
#
# If the :add_month_numbers option is passed:
#
# month_name(1) # => "1 - January"
#
# If the :month_format_string option is passed:
#
# month_name(1) # => "January (01)"
#
# depending on the format string.
def month_name(number)
if @options[:use_month_numbers]
number
elsif @options[:use_two_digit_numbers]
'%02d' % number
elsif @options[:add_month_numbers]
"#{number} - #{month_names[number]}"
elsif format_string = @options[:month_format_string]
format_string % {number: number, name: month_names[number]}
else
month_names[number]
end
end
def date_order
@date_order ||= @options[:order] || translated_date_order
end
def translated_date_order
date_order = I18n.translate(:'date.order', :locale => @options[:locale], :default => [])
date_order = date_order.map(&:to_sym)
forbidden_elements = date_order - [:year, :month, :day]
if forbidden_elements.any?
raise StandardError,
"#{@options[:locale]}.date.order only accepts :year, :month and :day"
end
date_order
end
# Build full select tag from date type and options.
def build_options_and_select(type, selected, options = {})
build_select(type, build_options(selected, options))
end
# Build select option HTML from date value and options.
# build_options(15, start: 1, end: 31)
# => "
#
# ..."
#
# If use_two_digit_numbers: true option is passed
# build_options(15, start: 1, end: 31, use_two_digit_numbers: true)
# => "
#
# ..."
#
# If :step options is passed
# build_options(15, start: 1, end: 31, step: 2)
# => "
#
# ..."
def build_options(selected, options = {})
options = {
leading_zeros: true, ampm: false, use_two_digit_numbers: false
}.merge!(options)
start = options.delete(:start) || 0
stop = options.delete(:end) || 59
step = options.delete(:step) || 1
leading_zeros = options.delete(:leading_zeros)
select_options = []
start.step(stop, step) do |i|
value = leading_zeros ? sprintf("%02d", i) : i
tag_options = { :value => value }
tag_options[:selected] = "selected" if selected == i
text = options[:use_two_digit_numbers] ? sprintf("%02d", i) : value
text = options[:ampm] ? AMPM_TRANSLATION[i] : text
select_options << content_tag(:option, text, tag_options)
end
(select_options.join("\n") + "\n").html_safe
end
# Builds select tag from date type and HTML select options.
# build_select(:month, "...")
# => ""
def build_select(type, select_options_as_html)
select_options = {
:id => input_id_from_type(type),
:name => input_name_from_type(type)
}.merge!(@html_options)
select_options[:disabled] = 'disabled' if @options[:disabled]
select_options[:class] = [select_options[:class], type].compact.join(' ') if @options[:with_css_classes]
select_html = "\n"
select_html << content_tag(:option, '', :value => '') + "\n" if @options[:include_blank]
select_html << prompt_option_tag(type, @options[:prompt]) + "\n" if @options[:prompt]
select_html << select_options_as_html
(content_tag(:select, select_html.html_safe, select_options) + "\n").html_safe
end
# Builds a prompt option tag with supplied options or from default options.
# prompt_option_tag(:month, prompt: 'Select month')
# => ""
def prompt_option_tag(type, options)
prompt = case options
when Hash
default_options = {:year => false, :month => false, :day => false, :hour => false, :minute => false, :second => false}
default_options.merge!(options)[type.to_sym]
when String
options
else
I18n.translate(:"datetime.prompts.#{type}", :locale => @options[:locale])
end
prompt ? content_tag(:option, prompt, :value => '') : ''
end
# Builds hidden input tag for date part and value.
# build_hidden(:year, 2008)
# => ""
def build_hidden(type, value)
select_options = {
:type => "hidden",
:id => input_id_from_type(type),
:name => input_name_from_type(type),
:value => value
}.merge!(@html_options.slice(:disabled))
select_options[:disabled] = 'disabled' if @options[:disabled]
tag(:input, select_options) + "\n".html_safe
end
# Returns the name attribute for the input tag.
# => post[written_on(1i)]
def input_name_from_type(type)
prefix = @options[:prefix] || ActionView::Helpers::DateTimeSelector::DEFAULT_PREFIX
prefix += "[#{@options[:index]}]" if @options.has_key?(:index)
field_name = @options[:field_name] || type
if @options[:include_position]
field_name += "(#{ActionView::Helpers::DateTimeSelector::POSITION[type]}i)"
end
@options[:discard_type] ? prefix : "#{prefix}[#{field_name}]"
end
# Returns the id attribute for the input tag.
# => "post_written_on_1i"
def input_id_from_type(type)
id = input_name_from_type(type).gsub(/([\[\(])|(\]\[)/, '_').gsub(/[\]\)]/, '')
id = @options[:namespace] + '_' + id if @options[:namespace]
id
end
# Given an ordering of datetime components, create the selection HTML
# and join them with their appropriate separators.
def build_selects_from_types(order)
select = ''
first_visible = order.find { |type| !@options[:"discard_#{type}"] }
order.reverse_each do |type|
separator = separator(type) unless type == first_visible # don't add before first visible field
select.insert(0, separator.to_s + send("select_#{type}").to_s)
end
select.html_safe
end
# Returns the separator for a given datetime component.
def separator(type)
return "" if @options[:use_hidden]
case type
when :year, :month, :day
@options[:"discard_#{type}"] ? "" : @options[:date_separator]
when :hour
(@options[:discard_year] && @options[:discard_day]) ? "" : @options[:datetime_separator]
when :minute, :second
@options[:"discard_#{type}"] ? "" : @options[:time_separator]
end
end
end
class FormBuilder
# Wraps ActionView::Helpers::DateHelper#date_select for form builders:
#
# <%= form_for @person do |f| %>
# <%= f.date_select :birth_date %>
# <%= f.submit %>
# <% end %>
#
# Please refer to the documentation of the base helper for details.
def date_select(method, options = {}, html_options = {})
@template.date_select(@object_name, method, objectify_options(options), html_options)
end
# Wraps ActionView::Helpers::DateHelper#time_select for form builders:
#
# <%= form_for @race do |f| %>
# <%= f.time_select :average_lap %>
# <%= f.submit %>
# <% end %>
#
# Please refer to the documentation of the base helper for details.
def time_select(method, options = {}, html_options = {})
@template.time_select(@object_name, method, objectify_options(options), html_options)
end
# Wraps ActionView::Helpers::DateHelper#datetime_select for form builders:
#
# <%= form_for @person do |f| %>
# <%= f.datetime_select :last_request_at %>
# <%= f.submit %>
# <% end %>
#
# Please refer to the documentation of the base helper for details.
def datetime_select(method, options = {}, html_options = {})
@template.datetime_select(@object_name, method, objectify_options(options), html_options)
end
end
end
end