require "date"
require 'action_view/helpers/tag_helper'
module ActionView
module Helpers
# The Date Helper primarily creates select/option tags for different kinds of dates and date 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 select_month 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 select_month
# method would use simply "date" (which can be overwritten using <tt>:prefix</tt>) instead of "date[month]".
module DateHelper
include ActionView::Helpers::TagHelper
DEFAULT_PREFIX = 'date' unless const_defined?('DEFAULT_PREFIX')
# Reports the approximate distance in time between two Time or Date 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, 29 secs <-> 23 hrs, 59 mins, 29 secs # => about [2..24] hours
# 23 hrs, 59 mins, 29 secs <-> 47 hrs, 59 mins, 29 secs # => 1 day
# 47 hrs, 59 mins, 29 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 <-> 2 yrs minus 1 secs # => about 1 year
# 2 yrs <-> max time or date # => over [2..X] years
#
# 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) # => over 3 years
# distance_of_time_in_words(from_time, from_time + 60.hours) # => about 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 + 4.years + 15.days + 30.minutes + 5.seconds) # => over 4 years
#
# to_time = Time.now + 6.years + 19.days
# distance_of_time_in_words(from_time, to_time, true) # => over 6 years
# distance_of_time_in_words(to_time, from_time, true) # => over 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)
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
case distance_in_minutes
when 0..1
return (distance_in_minutes == 0) ? 'less than a minute' : '1 minute' unless include_seconds
case distance_in_seconds
when 0..4 then 'less than 5 seconds'
when 5..9 then 'less than 10 seconds'
when 10..19 then 'less than 20 seconds'
when 20..39 then 'half a minute'
when 40..59 then 'less than a minute'
else '1 minute'
end
when 2..44 then "#{distance_in_minutes} minutes"
when 45..89 then 'about 1 hour'
when 90..1439 then "about #{(distance_in_minutes.to_f / 60.0).round} hours"
when 1440..2879 then '1 day'
when 2880..43199 then "#{(distance_in_minutes / 1440).round} days"
when 43200..86399 then 'about 1 month'
when 86400..525599 then "#{(distance_in_minutes / 43200).round} months"
when 525600..1051199 then 'about 1 year'
else "over #{(distance_in_minutes / 525600).round} years"
end
end
# Like distance_of_time_in_words, 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) # => 15 hours
# time_ago_in_words(Time.now) # => less than a minute
#
# from_time = Time.now - 3.days - 14.minutes - 25.seconds # => 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+). It's possible to tailor the selects through the +options+ hash,
# which accepts all the keys that each of the individual select builders do (like :use_month_numbers for select_month) as well as a range of
# discard options. The discard options are <tt>:discard_year</tt>, <tt>:discard_month</tt> and <tt>:discard_day</tt>. Set to true, they'll
# drop the respective select. Discarding the month select will also automatically discard the day select. 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. Symbols may be omitted and the respective select is not included.
#
# Pass the <tt>:default</tt> option to set the default date. Use a Time object or a Hash of :year, :month, :day, :hour, :minute, and :second.
#
# Passing :disabled => true as part of the +options+ will make elements inaccessible for change.
#
# 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 post variable, in the written_on attribute
# date_select("post", "written_on")
#
# # Generates a date select that when POSTed is stored in the post variable, in the written_on attribute,
# # with the year in the year drop down box starting at 1995.
# date_select("post", "written_on", :start_year => 1995)
#
# # Generates a date select that when POSTed is stored in the post 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("post", "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 post variable, in the written_on attribute
# # with the fields ordered as day, month, year rather than month, day, year.
# date_select("post", "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 user variable, in the birthday attribute
# # which is initially set to the date 3 days from the current date
# date_select("post", "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 })
#
# 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, nil, 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>.
#
# 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 post variable in the sunrise attribute
# time_select("post", "sunrise")
#
# # Creates a time select tag that, when POSTed, will be stored in the order variable in the submitted attribute
# time_select("order", "submitted")
#
# # Creates a time select tag that, when POSTed, will be stored in the mail variable in the sent_at attribute
# time_select("mail", "sent_at")
#
# # Creates a time select tag with a seconds field that, when POSTed, will be stored in the post variables in
# # the sunrise attribute.
# time_select("post", "start_time", :include_seconds => true)
#
# # Creates a time select tag with a seconds field that, when POSTed, will be stored in the entry variables in
# # the submission_time attribute.
# time_select("entry", "submission_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}
#
# 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, nil, 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+). Examples:
#
# 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 post variable in the written_on attribute
# datetime_select("post", "written_on")
#
# # Generates a datetime select with a year select that starts at 1995 that, when POSTed, will be stored in the
# # post variable in the written_on attribute.
# datetime_select("post", "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)
#
# # Generates a datetime select that discards the type that, when POSTed, will be stored in the post variable as the written_on
# # attribute.
# datetime_select("post", "written_on", :discard_type => true)
#
# 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, nil, options.delete(:object)).to_datetime_select_tag(options, html_options)
end
# Returns a set of html select-tags (one for year, month, day, hour, and minute) 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> 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 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)
#
# # 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')
#
def select_datetime(datetime = Time.now, options = {}, html_options = {})
separator = options[:datetime_separator] || ''
select_date(datetime, options, html_options) + separator + select_time(datetime, options, html_options)
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 you do not supply a Symbol, it
# will be appended onto the <tt>:order</tt> passed in.
#
# If anything is passed in the html_options hash it will be applied to every select tag in the set.
#
# ==== Examples
# my_date = Time.today + 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_datetime(my_date_time, :discard_type => true)
#
# # Generates a date select that defaults to the datetime in my_date (six days after today)
# # prefixed with 'payday' rather than 'date'
# select_datetime(my_date_time, :prefix => 'payday')
#
def select_date(date = Date.today, options = {}, html_options = {})
options[:order] ||= []
[:year, :month, :day].each { |o| options[:order].push(o) unless options[:order].include?(o) }
select_date = ''
options[:order].each do |o|
select_date << self.send("select_#{o}", date, options, html_options)
end
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)
#
def select_time(datetime = Time.now, options = {}, html_options = {})
separator = options[:time_separator] || ''
select_hour(datetime, options, html_options) + separator + select_minute(datetime, options, html_options) + (options[:include_seconds] ? separator + select_second(datetime, options, html_options) : '')
end
# Returns a select tag with options for each of the seconds 0 through 59 with the current second selected.
# The <tt>second</tt> can also be substituted for a second number.
# 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')
#
def select_second(datetime, options = {}, html_options = {})
val = datetime ? (datetime.kind_of?(Fixnum) ? datetime : datetime.sec) : ''
if options[:use_hidden]
options[:include_seconds] ? hidden_html(options[:field_name] || 'second', val, options) : ''
else
second_options = []
0.upto(59) do |second|
second_options << ((val == second) ?
content_tag(:option, leading_zero_on_single_digits(second), :value => leading_zero_on_single_digits(second), :selected => "selected") :
content_tag(:option, leading_zero_on_single_digits(second), :value => leading_zero_on_single_digits(second))
)
second_options << "\n"
end
select_html(options[:field_name] || 'second', second_options.join, options, html_options)
end
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>minute</tt> can also be substituted for a minute number.
# 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 'stride' rather than 'second'
# select_minute(my_time, :field_name => 'stride')
#
def select_minute(datetime, options = {}, html_options = {})
val = datetime ? (datetime.kind_of?(Fixnum) ? datetime : datetime.min) : ''
if options[:use_hidden]
hidden_html(options[:field_name] || 'minute', val, options)
else
minute_options = []
0.step(59, options[:minute_step] || 1) do |minute|
minute_options << ((val == minute) ?
content_tag(:option, leading_zero_on_single_digits(minute), :value => leading_zero_on_single_digits(minute), :selected => "selected") :
content_tag(:option, leading_zero_on_single_digits(minute), :value => leading_zero_on_single_digits(minute))
)
minute_options << "\n"
end
select_html(options[:field_name] || 'minute', minute_options.join, options, html_options)
end
end
# Returns a select tag with options for each of the hours 0 through 23 with the current hour selected.
# The <tt>hour</tt> can also be substituted for a hour number.
# 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 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 'stride' rather than 'second'
# select_minute(my_time, :field_name => 'stride')
#
def select_hour(datetime, options = {}, html_options = {})
val = datetime ? (datetime.kind_of?(Fixnum) ? datetime : datetime.hour) : ''
if options[:use_hidden]
hidden_html(options[:field_name] || 'hour', val, options)
else
hour_options = []
0.upto(23) do |hour|
hour_options << ((val == hour) ?
content_tag(:option, leading_zero_on_single_digits(hour), :value => leading_zero_on_single_digits(hour), :selected => "selected") :
content_tag(:option, leading_zero_on_single_digits(hour), :value => leading_zero_on_single_digits(hour))
)
hour_options << "\n"
end
select_html(options[:field_name] || 'hour', hour_options.join, options, html_options)
end
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 hour number.
# Override the field name using the <tt>:field_name</tt> option, 'day' by default.
#
# ==== Examples
# my_date = Time.today + 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')
#
def select_day(date, options = {}, html_options = {})
val = date ? (date.kind_of?(Fixnum) ? date : date.day) : ''
if options[:use_hidden]
hidden_html(options[:field_name] || 'day', val, options)
else
day_options = []
1.upto(31) do |day|
day_options << ((val == day) ?
content_tag(:option, day, :value => day, :selected => "selected") :
content_tag(:option, day, :value => day)
)
day_options << "\n"
end
select_html(options[:field_name] || 'day', day_options.join, options, html_options)
end
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 ...))
#
def select_month(date, options = {}, html_options = {})
val = date ? (date.kind_of?(Fixnum) ? date : date.month) : ''
if options[:use_hidden]
hidden_html(options[:field_name] || 'month', val, options)
else
month_options = []
month_names = options[:use_month_names] || (options[:use_short_month] ? Date::ABBR_MONTHNAMES : Date::MONTHNAMES)
month_names.unshift(nil) if month_names.size < 13
1.upto(12) do |month_number|
month_name = if options[:use_month_numbers]
month_number
elsif options[:add_month_numbers]
month_number.to_s + ' - ' + month_names[month_number]
else
month_names[month_number]
end
month_options << ((val == month_number) ?
content_tag(:option, month_name, :value => month_number, :selected => "selected") :
content_tag(:option, month_name, :value => month_number)
)
month_options << "\n"
end
select_html(options[:field_name] || 'month', month_options.join, options, html_options)
end
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)
#
def select_year(date, options = {}, html_options = {})
val = date ? (date.kind_of?(Fixnum) ? date : date.year) : ''
if options[:use_hidden]
hidden_html(options[:field_name] || 'year', val, options)
else
year_options = []
y = date ? (date.kind_of?(Fixnum) ? (y = (date == 0) ? Date.today.year : date) : date.year) : Date.today.year
start_year, end_year = (options[:start_year] || y-5), (options[:end_year] || y+5)
step_val = start_year < end_year ? 1 : -1
start_year.step(end_year, step_val) do |year|
year_options << ((val == year) ?
content_tag(:option, year, :value => year, :selected => "selected") :
content_tag(:option, year, :value => year)
)
year_options << "\n"
end
select_html(options[:field_name] || 'year', year_options.join, options, html_options)
end
end
private
def select_html(type, html_options, options, select_tag_options = {})
name_and_id_from_options(options, type)
select_options = {:id => options[:id], :name => options[:name]}
select_options.merge!(:disabled => 'disabled') if options[:disabled]
select_options.merge!(select_tag_options) unless select_tag_options.empty?
select_html = "\n"
select_html << content_tag(:option, '', :value => '') + "\n" if options[:include_blank]
select_html << html_options.to_s
content_tag(:select, select_html, select_options) + "\n"
end
def hidden_html(type, value, options)
name_and_id_from_options(options, type)
hidden_html = tag(:input, :type => "hidden", :id => options[:id], :name => options[:name], :value => value) + "\n"
end
def name_and_id_from_options(options, type)
options[:name] = (options[:prefix] || DEFAULT_PREFIX) + (options[:discard_type] ? '' : "[#{type}]")
options[:id] = options[:name].gsub(/([\[\(])|(\]\[)/, '_').gsub(/[\]\)]/, '')
end
def leading_zero_on_single_digits(number)
number > 9 ? number : "0#{number}"
end
end
class InstanceTag #:nodoc:
include DateHelper
def to_date_select_tag(options = {}, html_options = {})
date_or_time_select(options.merge(:discard_hour => true), html_options)
end
def to_time_select_tag(options = {}, html_options = {})
date_or_time_select(options.merge(:discard_year => true, :discard_month => true), html_options)
end
def to_datetime_select_tag(options = {}, html_options = {})
date_or_time_select(options, html_options)
end
private
def date_or_time_select(options, html_options = {})
defaults = { :discard_type => true }
options = defaults.merge(options)
datetime = value(object)
datetime ||= default_time_from_options(options[:default]) unless options[:include_blank]
position = { :year => 1, :month => 2, :day => 3, :hour => 4, :minute => 5, :second => 6 }
order = (options[:order] ||= [:year, :month, :day])
# Discard explicit and implicit by not being included in the :order
discard = {}
discard[:year] = true if options[:discard_year] or !order.include?(:year)
discard[:month] = true if options[:discard_month] or !order.include?(:month)
discard[:day] = true if options[:discard_day] or discard[:month] or !order.include?(:day)
discard[:hour] = true if options[:discard_hour]
discard[:minute] = true if options[:discard_minute] or discard[:hour]
discard[:second] = true unless options[:include_seconds] && !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 && discard[:day] && !discard[:month]
datetime = datetime.change(:day => 1)
end
# Maintain valid dates by including hidden fields for discarded elements
[:day, :month, :year].each { |o| order.unshift(o) unless order.include?(o) }
# Ensure proper ordering of :hour, :minute and :second
[:hour, :minute, :second].each { |o| order.delete(o); order.push(o) }
date_or_time_select = ''
order.reverse.each do |param|
# Send hidden fields for discarded elements once output has started
# This ensures AR can reconstruct valid dates using ParseDate
next if discard[param] && date_or_time_select.empty?
date_or_time_select.insert(0, self.send("select_#{param}", datetime, options_with_prefix(position[param], options.merge(:use_hidden => discard[param])), html_options))
date_or_time_select.insert(0,
case param
when :hour then (discard[:year] && discard[:day] ? "" : " — ")
when :minute then " : "
when :second then options[:include_seconds] ? " : " : ""
else ""
end)
end
date_or_time_select
end
def options_with_prefix(position, options)
prefix = "#{@object_name}"
if options[:index]
prefix << "[#{options[:index]}]"
elsif @auto_index
prefix << "[#{@auto_index}]"
end
options.merge(:prefix => "#{prefix}[#{@method_name}(#{position}i)]")
end
def default_time_from_options(default)
case default
when nil
Time.now
when Date, Time
default
else
# Rename :minute and :second to :min and :sec
default[:min] ||= default[:minute]
default[:sec] ||= default[:second]
[:year, :month, :day, :hour, :min, :sec].each do |key|
default[key] ||= Time.now.send(key)
end
Time.mktime(default[:year], default[:month], default[:day],
default[:hour], default[:min], default[:sec])
end
end
end
class FormBuilder
def date_select(method, options = {}, html_options = {})
@template.date_select(@object_name, method, options.merge(:object => @object))
end
def time_select(method, options = {}, html_options = {})
@template.time_select(@object_name, method, options.merge(:object => @object))
end
def datetime_select(method, options = {}, html_options = {})
@template.datetime_select(@object_name, method, options.merge(:object => @object))
end
end
end
end
