require 'date'
require 'action_view/helpers/tag_helper'
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:
#
# * <tt>:prefix</tt> - 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 <tt>select_month</tt> method.
# * <tt>:include_blank</tt> - set to true if it should be possible to set an empty date.
# * <tt>:discard_type</tt> - set to true if you want to discard the type part of the select name. If set to true,
# the <tt>select_month</tt> method would use simply "date" (which can be overwritten using <tt>:prefix</tt>) instead
# of "date[month]".
module DateHelper
# Reports the approximate distance in time between two Time, Date or DateTime objects or integers as seconds.
# Set <tt>include_seconds</tt> to 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 <-> 59 days, 23 hrs, 59 mins, 29 secs # => about 1 month
# 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 <tt>include_seconds</tt> = 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
#
# ==== Examples
# 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, 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, true) # => less than a minute
# distance_of_time_in_words(from_time, from_time - 45.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, true) # => about 6 years
# distance_of_time_in_words(to_time, from_time, 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, include_seconds = false, 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)
distance_in_minutes = (((to_time - from_time).abs)/60).round
distance_in_seconds = ((to_time - from_time).abs).round
I18n.with_options :locale => options[:locale], :scope => :'datetime.distance_in_words' 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 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..44 then locale.t :x_minutes, :count => distance_in_minutes
when 45..89 then locale.t :about_x_hours, :count => 1
when 90..1439 then locale.t :about_x_hours, :count => (distance_in_minutes.to_f / 60.0).round
when 1440..2519 then locale.t :x_days, :count => 1
when 2520..43199 then locale.t :x_days, :count => (distance_in_minutes.to_f / 1440.0).round
when 43200..86399 then locale.t :about_x_months, :count => 1
when 86400..525599 then locale.t :x_months, :count => (distance_in_minutes.to_f / 43200.0).round
else
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
remainder = (minutes_with_offset % 525600)
distance_in_years = (minutes_with_offset / 525600)
if remainder < 131400
locale.t(:about_x_years, :count => distance_in_years)
elsif remainder < 394200
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 <tt>distance_of_time_in_words</tt>, but where <tt>to_time</tt> is fixed to <tt>Time.now</tt>.
#
# ==== Examples
# time_ago_in_words(3.minutes.from_now) # => 3 minutes
# time_ago_in_words(Time.now - 15.hours) # => about 15 hours
# time_ago_in_words(Time.now) # => less than a minute
#
# from_time = Time.now - 3.days - 14.minutes - 25.seconds
# time_ago_in_words(from_time) # => 3 days
#
def time_ago_in_words(from_time, include_seconds = false)
distance_of_time_in_words(from_time, Time.now, include_seconds)
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
# * <tt>:use_month_numbers</tt> - Set to true if you want to use month numbers rather than month names (e.g.
# "2" instead of "February").
# * <tt>:use_short_month</tt> - Set to true if you want to use abbreviated month names instead of full
# month names (e.g. "Feb" instead of "February").
# * <tt>:add_month_numbers</tt> - Set to true if you want to use both month numbers and month names (e.g.
# "2 - February" instead of "February").
# * <tt>:use_month_names</tt> - 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.
# * <tt>:date_separator</tt> - Specifies a string to separate the date fields. Default is "" (i.e. nothing).
# * <tt>:start_year</tt> - Set the start year for the year select. Default is <tt>Time.now.year - 5</tt>.
# * <tt>:end_year</tt> - Set the end year for the year select. Default is <tt>Time.now.year + 5</tt>.
# * <tt>:discard_day</tt> - 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.
# * <tt>:discard_month</tt> - 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.
# * <tt>:discard_year</tt> - 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.
# * <tt>:order</tt> - Set to an array containing <tt>:day</tt>, <tt>:month</tt> and <tt>:year</tt> 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 <tt>:discard_xxx => true</tt>. Defaults to the order defined in
# the respective locale (e.g. [:year, :month, :day] in the en locale that ships with Rails).
# * <tt>:include_blank</tt> - Include a blank option in every select field so it's possible to set empty
# dates.
# * <tt>:default</tt> - Set a default date if the affected date isn't set or is nil.
# * <tt>:disabled</tt> - Set to true if you want show the select fields as disabled.
# * <tt>:prompt</tt> - Set to true (for a generic prompt), a prompt string or a hash of prompt strings
# for <tt>:year</tt>, <tt>:month</tt>, <tt>:day</tt>, <tt>:hour</tt>, <tt>:minute</tt> and <tt>:second</tt>.
# Setting this option prepends a select option with a generic prompt (Day, Month, Year, Hour, Minute, Seconds)
# or the given prompt string.
#
# 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.
#
# ==== Examples
# # 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 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 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 = {})
InstanceTag.new(object_name, method, self, options.delete(:object)).to_date_select_tag(options, html_options)
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 <tt>:include_seconds</tt>. You can get hours in the AM/PM format
# with <tt>:ampm</tt> option.
#
# This method will also generate 3 input hidden tags, for the actual year, month and day unless the option
# <tt>:ignore_date</tt> is set to +true+. If you set the <tt>:ignore_date</tt> 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.
#
# ==== Examples
# # 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 <tt>:minute_step</tt> 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 <tt>:prompt => true</tt> 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 = {})
InstanceTag.new(object_name, method, self, options.delete(:object)).to_time_select_tag(options, html_options)
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.
#
# ==== Examples
# # 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 <tt>:prompt => true</tt> 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 = {})
InstanceTag.new(object_name, method, self, options.delete(:object)).to_datetime_select_tag(options, html_options)
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 <tt>:order</tt> option with
# an array of symbols <tt>:year</tt>, <tt>:month</tt> and <tt>:day</tt> in the desired order. If you do not
# supply a Symbol, it will be appended onto the <tt>:order</tt> passed in. You can also add
# <tt>:date_separator</tt>, <tt>:datetime_separator</tt> and <tt>:time_separator</tt> 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.
#
# ==== Examples
# 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 <tt>:prompt => true</tt> 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 <tt>:order</tt> option with an array of
# symbols <tt>:year</tt>, <tt>:month</tt> and <tt>:day</tt> in the desired order.
# If the array passed to the <tt>:order</tt> 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.
#
# ==== Examples
# 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 <tt>:prompt => true</tt> 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 <tt>:time_separator</tt> key to format the output, and
# the <tt>:include_seconds</tt> 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.
#
# ==== Examples
# 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 with a custom prompt. Use <tt>:prompt</tt> 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 <tt>datetime</tt> can be either a +Time+ or +DateTime+ object or an integer.
# Override the field name using the <tt>:field_name</tt> option, 'second' by default.
#
# ==== Examples
# 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 <tt>:prompt => true</tt> 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 <tt>minute_step</tt> from 0 through 59 with the 00 minute
# selected. The <tt>datetime</tt> can be either a +Time+ or +DateTime+ object or an integer.
# Override the field name using the <tt>:field_name</tt> option, 'minute' by default.
#
# ==== Examples
# my_time = Time.now + 6.hours
#
# # 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 <tt>:prompt => true</tt> 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 <tt>datetime</tt> can be either a +Time+ or +DateTime+ object or an integer.
# Override the field name using the <tt>:field_name</tt> option, 'hour' by default.
#
# ==== Examples
# 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 <tt>:prompt => true</tt> 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)
#
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 <tt>date</tt> can also be substituted for a day number.
# Override the field name using the <tt>:field_name</tt> option, 'day' by default.
#
# ==== Examples
# 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_time)
#
# # 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 day for the date in my_date
# # that is named 'due' rather than 'day'.
# select_day(my_time, :field_name => 'due')
#
# # Generates a select field for days with a custom prompt. Use <tt>:prompt => true</tt> 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 <tt>:use_month_numbers</tt> key in +options+ to true for this to happen. If you
# want both numbers and names, set the <tt>:add_month_numbers</tt> key in +options+ to true. If you would prefer
# to show month names as abbreviations, set the <tt>:use_short_month</tt> key in +options+ to true. If you want
# to use your own month names, set the <tt>:use_month_names</tt> key in +options+ to an array of 12 month names.
# Override the field name using the <tt>:field_name</tt> option, 'month' by default.
#
# ==== Examples
# # 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 with a custom prompt. Use <tt>:prompt => true</tt> 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 <tt>:start_year</tt> and <tt>:end_year</tt> keys in the
# +options+. Both ascending and descending year lists are supported by making <tt>:start_year</tt> less than or
# greater than <tt>:end_year</tt>. The <tt>date</tt> can also be substituted for a year given as a number.
# Override the field name using the <tt>:field_name</tt> option, 'year' by default.
#
# ==== Examples
# # 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 <tt>:prompt => true</tt> 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.
#
# ==== Examples
# time_tag Date.today # =>
# <time datetime="2010-11-04">November 04, 2010</time>
# time_tag Time.now # =>
# <time datetime="2010-11-04T17:55:45+01:00">November 04, 2010 17:55</time>
# time_tag Date.yesterday, 'Yesterday' # =>
# <time datetime="2010-11-03">Yesterday</time>
# time_tag Date.today, :pubdate => true # =>
# <time datetime="2010-11-04" pubdate="pubdate">November 04, 2010</time>
#
def time_tag(date_or_time, *args)
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.rfc3339
content_tag(:time, content, options.reverse_merge(:datetime => datetime))
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]
# If the day is hidden and the month is visible, the day should be set to the 1st so all month choices are
# valid (otherwise it could be 31 and February wouldn't be a valid date)
if @datetime && @options[:discard_day] && !@options[:discard_month]
@datetime = @datetime.change(:day => 1)
end
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)
# If the day is hidden and the month is visible, the day should be set to the 1st so all month choices are
# valid (otherwise it could be 31 and February wouldn't be a valid date)
if @datetime && @options[:discard_day] && !@options[:discard_month]
@datetime = @datetime.change(:day => 1)
end
[: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
build_options_and_select(:hour, hour, :end => 23, :ampm => @options[:ampm])
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're 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
# 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 <tt>:use_short_month</tt> 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
# Lookup month name for number.
# month_name(1) => "January"
#
# If <tt>:use_month_numbers</tt> option is passed
# month_name(1) => 1
#
# If <tt>:add_month_numbers</tt> option is passed
# month_name(1) => "1 - January"
def month_name(number)
if @options[:use_month_numbers]
number
elsif @options[:use_two_digit_numbers]
sprintf "%02d", number
elsif @options[:add_month_numbers]
"#{number} - #{month_names[number]}"
else
month_names[number]
end
end
def date_order
@date_order ||= @options[:order] || translated_date_order
end
def translated_date_order
I18n.translate(:'date.order', :locale => @options[:locale]) || []
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)
# => "<option value="1">1</option>
# <option value="2">2</option>
# <option value="3">3</option>..."
#
# If <tt>:step</tt> options is passed
# build_options(15, :start => 1, :end => 31, :step => 2)
# => "<option value="1">1</option>
# <option value="3">3</option>
# <option value="5">5</option>..."
def build_options(selected, options = {})
start = options.delete(:start) || 0
stop = options.delete(:end) || 59
step = options.delete(:step) || 1
options.reverse_merge!({:leading_zeros => true, :ampm => false, :use_two_digit_numbers => false})
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, "<option value="1">January</option>...")
# => "<select id="post_written_on_2i" name="post[written_on(2i)]">
# <option value="1">January</option>...
# </select>"
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.merge!(:disabled => 'disabled') if @options[:disabled]
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')
# => "<option value="">Select month</option>"
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)
# => "<input id="post_written_on_1i" name="post[written_on(1i)]" type="hidden" value="2008" />"
def build_hidden(type, value)
(tag(:input, {
:type => "hidden",
:id => input_id_from_type(type),
:name => input_name_from_type(type),
:value => value
}.merge(@html_options.slice(:disabled))) + "\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)
case type
when :year
@options[:discard_year] ? "" : @options[:date_separator]
when :month
@options[:discard_month] ? "" : @options[:date_separator]
when :day
@options[:discard_day] ? "" : @options[:date_separator]
when :hour
(@options[:discard_year] && @options[:discard_day]) ? "" : @options[:datetime_separator]
when :minute
@options[:discard_minute] ? "" : @options[:time_separator]
when :second
@options[:include_seconds] ? @options[:time_separator] : ""
end
end
end
module DateHelperInstanceTag
def to_date_select_tag(options = {}, html_options = {})
datetime_selector(options, html_options).select_date.html_safe
end
def to_time_select_tag(options = {}, html_options = {})
datetime_selector(options, html_options).select_time.html_safe
end
def to_datetime_select_tag(options = {}, html_options = {})
datetime_selector(options, html_options).select_datetime.html_safe
end
private
def datetime_selector(options, html_options)
datetime = value(object) || default_datetime(options)
@auto_index ||= nil
options = options.dup
options[:field_name] = @method_name
options[:include_position] = true
options[:prefix] ||= @object_name
options[:index] = @auto_index if @auto_index && !options.has_key?(:index)
DateTimeSelector.new(datetime, options, html_options)
end
def default_datetime(options)
return if options[:include_blank] || options[:prompt]
case options[:default]
when nil
Time.current
when Date, Time
options[:default]
else
default = options[:default].dup
# Rename :minute and :second to :min and :sec
default[:min] ||= default[:minute]
default[:sec] ||= default[:second]
time = Time.current
[:year, :month, :day, :hour, :min, :sec].each do |key|
default[key] ||= time.send(key)
end
Time.utc_time(
default[:year], default[:month], default[:day],
default[:hour], default[:min], default[:sec]
)
end
end
end
class InstanceTag #:nodoc:
include DateHelperInstanceTag
end
class FormBuilder
def date_select(method, options = {}, html_options = {})
@template.date_select(@object_name, method, objectify_options(options), html_options)
end
def time_select(method, options = {}, html_options = {})
@template.time_select(@object_name, method, objectify_options(options), html_options)
end
def datetime_select(method, options = {}, html_options = {})
@template.datetime_select(@object_name, method, objectify_options(options), html_options)
end
end
end
end