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:
#
# * :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
# Reports the approximate distance in time between two Time or Date objects or integers as seconds.
# Set include_seconds 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 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
#
# ==== 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 + 9.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, 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..2879 then locale.t :x_days, :count => 1
when 2880..43199 then locale.t :x_days, :count => (distance_in_minutes / 1440).round
when 43200..86399 then locale.t :about_x_months, :count => 1
when 86400..525599 then locale.t :x_months, :count => (distance_in_minutes / 43200).round
when 525600..1051199 then locale.t :about_x_years, :count => 1
else locale.t :over_x_years, :count => (distance_in_minutes / 525600).round
end
end
end
# Like distance_of_time_in_words, but where to_time is fixed to Time.now.
#
# ==== 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+). You can
# the output in the +options+ hash.
#
# ==== 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_short_month - Set to true if you want to use the abbreviated month name instead of the full
# name (e.g. "Feb" instead of "February").
# * :add_month_number - Set to true if you want to show both, the month's number and name (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' new i18n functionality for this.
# * :date_separator - Specifies a string to separate the date fields. Default is "" (i.e. nothing).
# * :start_year - Set the start year for the year select. Default is Time.now.year - 5.
# * :end_year - Set the end year for the year select. Default is Time.now.year + 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 do
# 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.
# * :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.
#
# 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 })
#
# # Generates a date select with custom prompts
# date_select("post", "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 :include_seconds.
#
# 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 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}
#
# # Creates a time select tag with a custom prompt. Use :prompt => true for generic prompts.
# time_select("post", "written_on", :prompt => {:hour => 'Choose hour', :minute => 'Choose minute', :second => 'Choose seconds'})
# time_select("post", "written_on", :prompt => {:hour => true}) # generic prompt for hours
# time_select("post", "written_on", :prompt => true) # generic prompts for all
#
# 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+). 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)
#
# # Generates a datetime select with a custom prompt. Use :prompt=>true for generic prompts.
# datetime_select("post", "written_on", :prompt => {:day => 'Choose day', :month => 'Choose month', :year => 'Choose year'})
# datetime_select("post", "written_on", :prompt => {:hour => true}) # generic prompt for hours
# datetime_select("post", "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, and minute) 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.
#
# ==== 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)
#
# # 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 you do not supply a Symbol,
# it will be appended onto the :order 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_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.
#
# ==== 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)
#
# # Generates a time select with a custom prompt. Use :prompt=>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 second can also be substituted for a second number.
# Override the field name using the :field_name 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 :prompt=>true for a
# # generic prompt.
# select_minute(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 minute can also be substituted for a minute number.
# Override the field name using the :field_name 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')
#
# # 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 hour can also be substituted for a hour number.
# Override the field name using the :field_name 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 minutes for the time in my_time
# # that is named 'stride' rather than 'second'
# 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')
#
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 hour number.
# Override the field name using the :field_name 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')
#
# # 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.
# Override the field name using the :field_name 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 :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.
#
# ==== 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 :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
end
class DateTimeSelector #:nodoc:
extend ActiveSupport::Memoizable
include ActionView::Helpers::TagHelper
DEFAULT_PREFIX = 'date'.freeze unless const_defined?('DEFAULT_PREFIX')
POSITION = {
:year => 1, :month => 2, :day => 3, :hour => 4, :minute => 5, :second => 6
}.freeze unless const_defined?('POSITION')
def initialize(datetime, options = {}, html_options = {})
@options = options.dup
@html_options = html_options.dup
@datetime = datetime
end
def select_datetime
# TODO: Remove tag conditional
# Ideally we could just join select_date and select_date for the tag case
if @options[:tag] && @options[:ignore_date]
select_time
elsif @options[:tag]
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
[: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)
else
"#{select_date}#{@options[:datetime_separator]}#{select_time}"
end
end
def select_date
order = date_order.dup
# TODO: Remove tag conditional
if @options[:tag]
@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
end
[:day, :month, :year].each { |o| order.unshift(o) unless order.include?(o) }
build_selects_from_types(order)
end
def select_time
order = []
# TODO: Remove tag conditional
if @options[:tag]
@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]
end
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)
end
end
def select_day
if @options[:use_hidden] || @options[:discard_day]
build_hidden(:day, day)
else
build_options_and_select(:day, day, :start => 1, :end => 31, :leading_zeros => false)
end
end
def select_month
if @options[:use_hidden] || @options[:discard_month]
build_hidden(:month, month)
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 = ''
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
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?(Fixnum) ? @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 = @options[:use_month_names] || translated_month_names
month_names.unshift(nil) if month_names.size < 13
month_names
end
memoize :month_names
# 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
begin
key = @options[:use_short_month] ? :'date.abbr_month_names' : :'date.month_names'
I18n.translate(key, :locale => @options[:locale])
end
end
# Lookup month name for number
# month_name(1) => "January"
#
# If :use_month_numbers option is passed
# month_name(1) => 1
#
# If :add_month_numbers option is passed
# month_name(1) => "1 - January"
def month_name(number)
if @options[:use_month_numbers]
number
elsif @options[:add_month_numbers]
"#{number} - #{month_names[number]}"
else
month_names[number]
end
end
def date_order
@options[:order] || translated_date_order
end
memoize :date_order
def translated_date_order
begin
I18n.translate(:'date.order', :locale => @options[:locale]) || []
end
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)
# => "
#
# ..."
def build_options(selected, options = {})
start = options.delete(:start) || 0
stop = options.delete(:end) || 59
step = options.delete(:step) || 1
leading_zeros = options.delete(:leading_zeros).nil? ? true : false
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
select_options << content_tag(:option, value, tag_options)
end
select_options.join("\n") + "\n"
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.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.to_s
content_tag(:select, select_html, select_options) + "\n"
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)
default_options = {:year => false, :month => false, :day => false, :hour => false, :minute => false, :second => false}
case options
when Hash
prompt = default_options.merge(options)[type.to_sym]
when String
prompt = options
else
prompt = I18n.translate(('datetime.prompts.' + type.to_s).to_sym, :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)
tag(:input, {
:type => "hidden",
:id => input_id_from_type(type),
:name => input_name_from_type(type),
:value => value
}) + "\n"
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)
input_name_from_type(type).gsub(/([\[\(])|(\]\[)/, '_').gsub(/[\]\)]/, '')
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 = ''
order.reverse.each do |type|
separator = separator(type) unless type == order.first # don't add on last field
select.insert(0, separator.to_s + send("select_#{type}").to_s)
end
select
end
# Returns the separator for a given datetime component
def separator(type)
case type
when :month, :day
@options[:date_separator]
when :hour
(@options[:discard_year] && @options[:discard_day]) ? "" : @options[:datetime_separator]
when :minute
@options[:time_separator]
when :second
@options[:include_seconds] ? @options[:time_separator] : ""
end
end
end
class InstanceTag #:nodoc:
def to_date_select_tag(options = {}, html_options = {})
datetime_selector(options, html_options).select_date
end
def to_time_select_tag(options = {}, html_options = {})
datetime_selector(options, html_options).select_time
end
def to_datetime_select_tag(options = {}, html_options = {})
datetime_selector(options, html_options).select_datetime
end
private
def datetime_selector(options, html_options)
datetime = value(object) || default_datetime(options)
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)
options[:datetime_separator] ||= ' — '
options[:time_separator] ||= ' : '
DateTimeSelector.new(datetime, options.merge(:tag => true), 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 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