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 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, 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 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) # => 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 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) # => 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 # * :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 abbreviated month names instead of full # month names (e.g. "Feb" instead of "February"). # * :add_month_numbers - Set to true if you want to use both month numbers and month names (e.g. # "2 - February" instead of "February"). # * :use_month_names - Set to an array with 12 month names if you want to customize month names. # Note: You can also use Rails' i18n functionality for this. # * :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 to # customize the order in which the select fields are shown. If you leave out any of the symbols, the respective # select will not be shown (like when you set :discard_xxx => true. Defaults to the order defined in # the respective locale (e.g. [:year, :month, :day] in the en locale that ships with Rails). # * :include_blank - Include a blank option in every select field so it's possible to set empty # dates. # * :default - Set a default date if the affected date isn't set or is nil. # * :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 post variable, in the written_on 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. You can get hours in the AM/PM format # with :ampm option. # # This method will also generate 3 input hidden tags, for the actual year, month and day unless the option # :ignore_date is set to +true+. If you set the :ignore_date to +true+, you must have a # +date_select+ on the same method within the form otherwise an exception will be raised. # # If anything is passed in the html_options hash it will be applied to every select tag in the set. # # ==== 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 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) # # # 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 # # # 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 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) # # # Generate a datetime select with hours in the AM/PM format # datetime_select("post", "written_on", :ampm => true) # # # 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) # # # Generate a datetime field with hours in the AM/PM format # select_datetime(my_date_time, :ampm => true) # # # Generates a datetime select that defaults to the datetime in my_date_time (four days after today) # # prefixed with 'payday' rather than 'date' # select_datetime(my_date_time, :prefix => 'payday') # # # Generates a datetime select with a custom prompt. Use :prompt => true for generic prompts. # select_datetime(my_date_time, :prompt => {:day => 'Choose day', :month => 'Choose month', :year => 'Choose year'}) # select_datetime(my_date_time, :prompt => {:hour => true}) # generic prompt for hours # select_datetime(my_date_time, :prompt => true) # generic prompts for all # def select_datetime(datetime = Time.current, options = {}, html_options = {}) DateTimeSelector.new(datetime, options, html_options).select_datetime end # Returns a set of html select-tags (one for year, month, and day) pre-selected with the +date+. # It's possible to explicitly set the order of the tags using the :order option with an array of # symbols :year, :month and :day in the desired order. If 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 afteri 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) # # # 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 :prompt to true for generic prompts. # select_time(my_time, :prompt => {:day => 'Choose day', :month => 'Choose month', :year => 'Choose year'}) # select_time(my_time, :prompt => {:hour => true}) # generic prompt for hours # select_time(my_time, :prompt => true) # generic prompts for all # def select_time(datetime = Time.current, options = {}, html_options = {}) DateTimeSelector.new(datetime, options, html_options).select_time end # Returns a select tag with options for each of the seconds 0 through 59 with the current second selected. # The 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_tiime. # 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') # # # 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 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 # Returns an html time tag for the given date or time. # # ==== Examples # time_tag Date.today # => # # time_tag Time.now # => # # time_tag Date.yesterday, 'Yesterday' # => # # time_tag Date.today, :pubdate => true # => # # 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: extend ActiveSupport::Memoizable 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) 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 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 :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 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) # => " # # ..." # # If :step options is passed # build_options(15, :start => 1, :end => 31, :step => 2) # => " # # ..." 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}) 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[:ampm] ? AMPM_TRANSLATION[i] : value select_options << content_tag(:option, text, tag_options) end (select_options.join("\n") + "\n").html_safe end # Builds select tag from date type and html select options. # build_select(:month, "...") # => "" def build_select(type, select_options_as_html) select_options = { :id => input_id_from_type(type), :name => input_name_from_type(type) }.merge(@html_options) select_options.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') # => "" def prompt_option_tag(type, options) prompt = case options when Hash default_options = {:year => false, :month => false, :day => false, :hour => false, :minute => false, :second => false} default_options.merge!(options)[type.to_sym] when String options else I18n.translate(:"datetime.prompts.#{type}", :locale => @options[:locale]) end prompt ? content_tag(:option, prompt, :value => '') : '' end # Builds hidden input tag for date part and value. # build_hidden(:year, 2008) # => "" def build_hidden(type, value) (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) 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.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 class InstanceTag #:nodoc: 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 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