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Diffstat (limited to 'actionview/lib/action_view/helpers/date_helper.rb')
| -rw-r--r-- | actionview/lib/action_view/helpers/date_helper.rb | 1079 |
1 files changed, 1079 insertions, 0 deletions
diff --git a/actionview/lib/action_view/helpers/date_helper.rb b/actionview/lib/action_view/helpers/date_helper.rb new file mode 100644 index 0000000000..7b838e260c --- /dev/null +++ b/actionview/lib/action_view/helpers/date_helper.rb @@ -0,0 +1,1079 @@ +require 'date' +require 'action_view/helpers/tag_helper' +require 'active_support/core_ext/array/extract_options' +require 'active_support/core_ext/date/conversions' +require 'active_support/core_ext/hash/slice' +require 'active_support/core_ext/object/with_options' + +module ActionView + module Helpers + # = Action View Date Helpers + # + # The Date Helper primarily creates select/option tags for different kinds of dates and times or date and time + # elements. All of the select-type methods share a number of common options that are as follows: + # + # * <tt>:prefix</tt> - overwrites the default prefix of "date" used for the select names. So specifying "birthday" + # would give \birthday[month] instead of \date[month] if passed to the <tt>select_month</tt> method. + # * <tt>:include_blank</tt> - set to true if it should be possible to set an empty date. + # * <tt>:discard_type</tt> - set to true if you want to discard the type part of the select name. If set to true, + # the <tt>select_month</tt> method would use simply "date" (which can be overwritten using <tt>:prefix</tt>) instead + # of \date[month]. + module DateHelper + # Reports the approximate distance in time between two Time, Date or DateTime objects or integers as seconds. + # Pass <tt>include_seconds: true</tt> if you want more detailed approximations when distance < 1 min, 29 secs. + # Distances are reported based on the following table: + # + # 0 <-> 29 secs # => less than a minute + # 30 secs <-> 1 min, 29 secs # => 1 minute + # 1 min, 30 secs <-> 44 mins, 29 secs # => [2..44] minutes + # 44 mins, 30 secs <-> 89 mins, 29 secs # => about 1 hour + # 89 mins, 30 secs <-> 23 hrs, 59 mins, 29 secs # => about [2..24] hours + # 23 hrs, 59 mins, 30 secs <-> 41 hrs, 59 mins, 29 secs # => 1 day + # 41 hrs, 59 mins, 30 secs <-> 29 days, 23 hrs, 59 mins, 29 secs # => [2..29] days + # 29 days, 23 hrs, 59 mins, 30 secs <-> 44 days, 23 hrs, 59 mins, 29 secs # => about 1 month + # 44 days, 23 hrs, 59 mins, 30 secs <-> 59 days, 23 hrs, 59 mins, 29 secs # => about 2 months + # 59 days, 23 hrs, 59 mins, 30 secs <-> 1 yr minus 1 sec # => [2..12] months + # 1 yr <-> 1 yr, 3 months # => about 1 year + # 1 yr, 3 months <-> 1 yr, 9 months # => over 1 year + # 1 yr, 9 months <-> 2 yr minus 1 sec # => almost 2 years + # 2 yrs <-> max time or date # => (same rules as 1 yr) + # + # With <tt>include_seconds: true</tt> and the difference < 1 minute 29 seconds: + # 0-4 secs # => less than 5 seconds + # 5-9 secs # => less than 10 seconds + # 10-19 secs # => less than 20 seconds + # 20-39 secs # => half a minute + # 40-59 secs # => less than a minute + # 60-89 secs # => 1 minute + # + # from_time = Time.now + # distance_of_time_in_words(from_time, from_time + 50.minutes) # => about 1 hour + # distance_of_time_in_words(from_time, 50.minutes.from_now) # => about 1 hour + # distance_of_time_in_words(from_time, from_time + 15.seconds) # => less than a minute + # distance_of_time_in_words(from_time, from_time + 15.seconds, include_seconds: true) # => less than 20 seconds + # distance_of_time_in_words(from_time, 3.years.from_now) # => about 3 years + # distance_of_time_in_words(from_time, from_time + 60.hours) # => 3 days + # distance_of_time_in_words(from_time, from_time + 45.seconds, include_seconds: true) # => less than a minute + # distance_of_time_in_words(from_time, from_time - 45.seconds, include_seconds: true) # => less than a minute + # distance_of_time_in_words(from_time, 76.seconds.from_now) # => 1 minute + # distance_of_time_in_words(from_time, from_time + 1.year + 3.days) # => about 1 year + # distance_of_time_in_words(from_time, from_time + 3.years + 6.months) # => over 3 years + # distance_of_time_in_words(from_time, from_time + 4.years + 9.days + 30.minutes + 5.seconds) # => about 4 years + # + # to_time = Time.now + 6.years + 19.days + # distance_of_time_in_words(from_time, to_time, include_seconds: true) # => about 6 years + # distance_of_time_in_words(to_time, from_time, include_seconds: true) # => about 6 years + # distance_of_time_in_words(Time.now, Time.now) # => less than a minute + def distance_of_time_in_words(from_time, to_time = 0, options = {}) + options = { + scope: :'datetime.distance_in_words' + }.merge!(options) + + from_time = from_time.to_time if from_time.respond_to?(:to_time) + to_time = to_time.to_time if to_time.respond_to?(:to_time) + from_time, to_time = to_time, from_time if from_time > to_time + distance_in_minutes = ((to_time - from_time)/60.0).round + distance_in_seconds = (to_time - from_time).round + + I18n.with_options :locale => options[:locale], :scope => options[:scope] do |locale| + case distance_in_minutes + when 0..1 + return distance_in_minutes == 0 ? + locale.t(:less_than_x_minutes, :count => 1) : + locale.t(:x_minutes, :count => distance_in_minutes) unless options[:include_seconds] + + case distance_in_seconds + when 0..4 then locale.t :less_than_x_seconds, :count => 5 + when 5..9 then locale.t :less_than_x_seconds, :count => 10 + when 10..19 then locale.t :less_than_x_seconds, :count => 20 + when 20..39 then locale.t :half_a_minute + when 40..59 then locale.t :less_than_x_minutes, :count => 1 + else locale.t :x_minutes, :count => 1 + end + + when 2...45 then locale.t :x_minutes, :count => distance_in_minutes + when 45...90 then locale.t :about_x_hours, :count => 1 + # 90 mins up to 24 hours + when 90...1440 then locale.t :about_x_hours, :count => (distance_in_minutes.to_f / 60.0).round + # 24 hours up to 42 hours + when 1440...2520 then locale.t :x_days, :count => 1 + # 42 hours up to 30 days + when 2520...43200 then locale.t :x_days, :count => (distance_in_minutes.to_f / 1440.0).round + # 30 days up to 60 days + when 43200...86400 then locale.t :about_x_months, :count => (distance_in_minutes.to_f / 43200.0).round + # 60 days up to 365 days + when 86400...525600 then locale.t :x_months, :count => (distance_in_minutes.to_f / 43200.0).round + else + if from_time.acts_like?(:time) && to_time.acts_like?(:time) + fyear = from_time.year + fyear += 1 if from_time.month >= 3 + tyear = to_time.year + tyear -= 1 if to_time.month < 3 + leap_years = (fyear > tyear) ? 0 : (fyear..tyear).count{|x| Date.leap?(x)} + minute_offset_for_leap_year = leap_years * 1440 + # Discount the leap year days when calculating year distance. + # e.g. if there are 20 leap year days between 2 dates having the same day + # and month then the based on 365 days calculation + # the distance in years will come out to over 80 years when in written + # English it would read better as about 80 years. + minutes_with_offset = distance_in_minutes - minute_offset_for_leap_year + else + minutes_with_offset = distance_in_minutes + end + remainder = (minutes_with_offset % 525600) + distance_in_years = (minutes_with_offset.div 525600) + if remainder < 131400 + locale.t(:about_x_years, :count => distance_in_years) + elsif remainder < 394200 + locale.t(:over_x_years, :count => distance_in_years) + else + locale.t(:almost_x_years, :count => distance_in_years + 1) + end + end + end + end + + # Like <tt>distance_of_time_in_words</tt>, but where <tt>to_time</tt> is fixed to <tt>Time.now</tt>. + # + # time_ago_in_words(3.minutes.from_now) # => 3 minutes + # time_ago_in_words(3.minutes.ago) # => 3 minutes + # time_ago_in_words(Time.now - 15.hours) # => about 15 hours + # time_ago_in_words(Time.now) # => less than a minute + # time_ago_in_words(Time.now, include_seconds: true) # => less than 5 seconds + # + # from_time = Time.now - 3.days - 14.minutes - 25.seconds + # time_ago_in_words(from_time) # => 3 days + # + # from_time = (3.days + 14.minutes + 25.seconds).ago + # time_ago_in_words(from_time) # => 3 days + # + # Note that you cannot pass a <tt>Numeric</tt> value to <tt>time_ago_in_words</tt>. + # + def time_ago_in_words(from_time, include_seconds_or_options = {}) + distance_of_time_in_words(from_time, Time.now, include_seconds_or_options) + end + + alias_method :distance_of_time_in_words_to_now, :time_ago_in_words + + # Returns a set of select tags (one for year, month, and day) pre-selected for accessing a specified date-based + # attribute (identified by +method+) on an object assigned to the template (identified by +object+). + # + # ==== Options + # * <tt>:use_month_numbers</tt> - Set to true if you want to use month numbers rather than month names (e.g. + # "2" instead of "February"). + # * <tt>:use_two_digit_numbers</tt> - Set to true if you want to display two digit month and day numbers (e.g. + # "02" instead of "February" and "08" instead of "8"). + # * <tt>:use_short_month</tt> - Set to true if you want to use abbreviated month names instead of full + # month names (e.g. "Feb" instead of "February"). + # * <tt>:add_month_numbers</tt> - Set to true if you want to use both month numbers and month names (e.g. + # "2 - February" instead of "February"). + # * <tt>:use_month_names</tt> - Set to an array with 12 month names if you want to customize month names. + # Note: You can also use Rails' i18n functionality for this. + # * <tt>:date_separator</tt> - Specifies a string to separate the date fields. Default is "" (i.e. nothing). + # * <tt>:start_year</tt> - Set the start year for the year select. Default is <tt>Date.today.year - 5</tt>if + # you are creating new record. While editing existing record, <tt>:start_year</tt> defaults to + # the current selected year minus 5. + # * <tt>:end_year</tt> - Set the end year for the year select. Default is <tt>Date.today.year + 5</tt> if + # you are creating new record. While editing existing record, <tt>:end_year</tt> defaults to + # the current selected year plus 5. + # * <tt>:discard_day</tt> - Set to true if you don't want to show a day select. This includes the day + # as a hidden field instead of showing a select field. Also note that this implicitly sets the day to be the + # first of the given month in order to not create invalid dates like 31 February. + # * <tt>:discard_month</tt> - Set to true if you don't want to show a month select. This includes the month + # as a hidden field instead of showing a select field. Also note that this implicitly sets :discard_day to true. + # * <tt>:discard_year</tt> - Set to true if you don't want to show a year select. This includes the year + # as a hidden field instead of showing a select field. + # * <tt>:order</tt> - Set to an array containing <tt>:day</tt>, <tt>:month</tt> and <tt>:year</tt> to + # customize the order in which the select fields are shown. If you leave out any of the symbols, the respective + # select will not be shown (like when you set <tt>discard_xxx: true</tt>. Defaults to the order defined in + # the respective locale (e.g. [:year, :month, :day] in the en locale that ships with Rails). + # * <tt>:include_blank</tt> - Include a blank option in every select field so it's possible to set empty + # dates. + # * <tt>:default</tt> - Set a default date if the affected date isn't set or is nil. + # * <tt>:selected</tt> - Set a date that overrides the actual value. + # * <tt>:disabled</tt> - Set to true if you want show the select fields as disabled. + # * <tt>:prompt</tt> - Set to true (for a generic prompt), a prompt string or a hash of prompt strings + # for <tt>:year</tt>, <tt>:month</tt>, <tt>:day</tt>, <tt>:hour</tt>, <tt>:minute</tt> and <tt>:second</tt>. + # Setting this option prepends a select option with a generic prompt (Day, Month, Year, Hour, Minute, Seconds) + # or the given prompt string. + # * <tt>:with_css_classes</tt> - Set to true if you want assign different styles for 'select' tags. This option + # automatically set classes 'year', 'month', 'day', 'hour', 'minute' and 'second' for your 'select' tags. + # + # If anything is passed in the +html_options+ hash it will be applied to every select tag in the set. + # + # NOTE: Discarded selects will default to 1. So if no month select is available, January will be assumed. + # + # # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute. + # date_select("article", "written_on") + # + # # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute, + # # with the year in the year drop down box starting at 1995. + # date_select("article", "written_on", start_year: 1995) + # + # # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute, + # # with the year in the year drop down box starting at 1995, numbers used for months instead of words, + # # and without a day select box. + # date_select("article", "written_on", start_year: 1995, use_month_numbers: true, + # discard_day: true, include_blank: true) + # + # # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute, + # # with two digit numbers used for months and days. + # date_select("article", "written_on", use_two_digit_numbers: true) + # + # # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute + # # with the fields ordered as day, month, year rather than month, day, year. + # date_select("article", "written_on", order: [:day, :month, :year]) + # + # # Generates a date select that when POSTed is stored in the user variable, in the birthday attribute + # # lacking a year field. + # date_select("user", "birthday", order: [:month, :day]) + # + # # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute + # # which is initially set to the date 3 days from the current date + # date_select("article", "written_on", default: 3.days.from_now) + # + # # Generates a date select that when POSTed is stored in the article variable, in the written_on attribute + # # which is set in the form with todays date, regardless of the value in the Active Record object. + # date_select("article", "written_on", selected: Date.today) + # + # # Generates a date select that when POSTed is stored in the credit_card variable, in the bill_due attribute + # # that will have a default day of 20. + # date_select("credit_card", "bill_due", default: { day: 20 }) + # + # # Generates a date select with custom prompts. + # date_select("article", "written_on", prompt: { day: 'Select day', month: 'Select month', year: 'Select year' }) + # + # The selects are prepared for multi-parameter assignment to an Active Record object. + # + # Note: If the day is not included as an option but the month is, the day will be set to the 1st to ensure that + # all month choices are valid. + def date_select(object_name, method, options = {}, html_options = {}) + Tags::DateSelect.new(object_name, method, self, options, html_options).render + end + + # Returns a set of select tags (one for hour, minute and optionally second) pre-selected for accessing a + # specified time-based attribute (identified by +method+) on an object assigned to the template (identified by + # +object+). You can include the seconds with <tt>:include_seconds</tt>. You can get hours in the AM/PM format + # with <tt>:ampm</tt> option. + # + # This method will also generate 3 input hidden tags, for the actual year, month and day unless the option + # <tt>:ignore_date</tt> is set to +true+. If you set the <tt>:ignore_date</tt> to +true+, you must have a + # +date_select+ on the same method within the form otherwise an exception will be raised. + # + # If anything is passed in the html_options hash it will be applied to every select tag in the set. + # + # # Creates a time select tag that, when POSTed, will be stored in the article variable in the sunrise attribute. + # time_select("article", "sunrise") + # + # # Creates a time select tag with a seconds field that, when POSTed, will be stored in the article variables in + # # the sunrise attribute. + # time_select("article", "start_time", include_seconds: true) + # + # # You can set the <tt>:minute_step</tt> to 15 which will give you: 00, 15, 30 and 45. + # time_select 'game', 'game_time', {minute_step: 15} + # + # # Creates a time select tag with a custom prompt. Use <tt>prompt: true</tt> for generic prompts. + # time_select("article", "written_on", prompt: {hour: 'Choose hour', minute: 'Choose minute', second: 'Choose seconds'}) + # time_select("article", "written_on", prompt: {hour: true}) # generic prompt for hours + # time_select("article", "written_on", prompt: true) # generic prompts for all + # + # # You can set :ampm option to true which will show the hours as: 12 PM, 01 AM .. 11 PM. + # time_select 'game', 'game_time', {ampm: true} + # + # The selects are prepared for multi-parameter assignment to an Active Record object. + # + # Note: If the day is not included as an option but the month is, the day will be set to the 1st to ensure that + # all month choices are valid. + def time_select(object_name, method, options = {}, html_options = {}) + Tags::TimeSelect.new(object_name, method, self, options, html_options).render + end + + # Returns a set of select tags (one for year, month, day, hour, and minute) pre-selected for accessing a + # specified datetime-based attribute (identified by +method+) on an object assigned to the template (identified + # by +object+). + # + # If anything is passed in the html_options hash it will be applied to every select tag in the set. + # + # # Generates a datetime select that, when POSTed, will be stored in the article variable in the written_on + # # attribute. + # datetime_select("article", "written_on") + # + # # Generates a datetime select with a year select that starts at 1995 that, when POSTed, will be stored in the + # # article variable in the written_on attribute. + # datetime_select("article", "written_on", start_year: 1995) + # + # # Generates a datetime select with a default value of 3 days from the current time that, when POSTed, will + # # be stored in the trip variable in the departing attribute. + # datetime_select("trip", "departing", default: 3.days.from_now) + # + # # Generate a datetime select with hours in the AM/PM format + # datetime_select("article", "written_on", ampm: true) + # + # # Generates a datetime select that discards the type that, when POSTed, will be stored in the article variable + # # as the written_on attribute. + # datetime_select("article", "written_on", discard_type: true) + # + # # Generates a datetime select with a custom prompt. Use <tt>prompt: true</tt> for generic prompts. + # datetime_select("article", "written_on", prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'}) + # datetime_select("article", "written_on", prompt: {hour: true}) # generic prompt for hours + # datetime_select("article", "written_on", prompt: true) # generic prompts for all + # + # The selects are prepared for multi-parameter assignment to an Active Record object. + def datetime_select(object_name, method, options = {}, html_options = {}) + Tags::DatetimeSelect.new(object_name, method, self, options, html_options).render + end + + # Returns a set of html select-tags (one for year, month, day, hour, minute, and second) pre-selected with the + # +datetime+. It's also possible to explicitly set the order of the tags using the <tt>:order</tt> option with + # an array of symbols <tt>:year</tt>, <tt>:month</tt> and <tt>:day</tt> in the desired order. If you do not + # supply a Symbol, it will be appended onto the <tt>:order</tt> passed in. You can also add + # <tt>:date_separator</tt>, <tt>:datetime_separator</tt> and <tt>:time_separator</tt> keys to the +options+ to + # control visual display of the elements. + # + # If anything is passed in the html_options hash it will be applied to every select tag in the set. + # + # my_date_time = Time.now + 4.days + # + # # Generates a datetime select that defaults to the datetime in my_date_time (four days after today). + # select_datetime(my_date_time) + # + # # Generates a datetime select that defaults to today (no specified datetime) + # select_datetime() + # + # # Generates a datetime select that defaults to the datetime in my_date_time (four days after today) + # # with the fields ordered year, month, day rather than month, day, year. + # select_datetime(my_date_time, order: [:year, :month, :day]) + # + # # Generates a datetime select that defaults to the datetime in my_date_time (four days after today) + # # with a '/' between each date field. + # select_datetime(my_date_time, date_separator: '/') + # + # # Generates a datetime select that defaults to the datetime in my_date_time (four days after today) + # # with a date fields separated by '/', time fields separated by '' and the date and time fields + # # separated by a comma (','). + # select_datetime(my_date_time, date_separator: '/', time_separator: '', datetime_separator: ',') + # + # # Generates a datetime select that discards the type of the field and defaults to the datetime in + # # my_date_time (four days after today) + # select_datetime(my_date_time, discard_type: true) + # + # # Generate a datetime field with hours in the AM/PM format + # select_datetime(my_date_time, ampm: true) + # + # # Generates a datetime select that defaults to the datetime in my_date_time (four days after today) + # # prefixed with 'payday' rather than 'date' + # select_datetime(my_date_time, prefix: 'payday') + # + # # Generates a datetime select with a custom prompt. Use <tt>prompt: true</tt> for generic prompts. + # select_datetime(my_date_time, prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'}) + # select_datetime(my_date_time, prompt: {hour: true}) # generic prompt for hours + # select_datetime(my_date_time, prompt: true) # generic prompts for all + def select_datetime(datetime = Time.current, options = {}, html_options = {}) + DateTimeSelector.new(datetime, options, html_options).select_datetime + end + + # Returns a set of html select-tags (one for year, month, and day) pre-selected with the +date+. + # It's possible to explicitly set the order of the tags using the <tt>:order</tt> option with an array of + # symbols <tt>:year</tt>, <tt>:month</tt> and <tt>:day</tt> in the desired order. + # If the array passed to the <tt>:order</tt> option does not contain all the three symbols, all tags will be hidden. + # + # If anything is passed in the html_options hash it will be applied to every select tag in the set. + # + # my_date = Time.now + 6.days + # + # # Generates a date select that defaults to the date in my_date (six days after today). + # select_date(my_date) + # + # # Generates a date select that defaults to today (no specified date). + # select_date() + # + # # Generates a date select that defaults to the date in my_date (six days after today) + # # with the fields ordered year, month, day rather than month, day, year. + # select_date(my_date, order: [:year, :month, :day]) + # + # # Generates a date select that discards the type of the field and defaults to the date in + # # my_date (six days after today). + # select_date(my_date, discard_type: true) + # + # # Generates a date select that defaults to the date in my_date, + # # which has fields separated by '/'. + # select_date(my_date, date_separator: '/') + # + # # Generates a date select that defaults to the datetime in my_date (six days after today) + # # prefixed with 'payday' rather than 'date'. + # select_date(my_date, prefix: 'payday') + # + # # Generates a date select with a custom prompt. Use <tt>prompt: true</tt> for generic prompts. + # select_date(my_date, prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'}) + # select_date(my_date, prompt: {hour: true}) # generic prompt for hours + # select_date(my_date, prompt: true) # generic prompts for all + def select_date(date = Date.current, options = {}, html_options = {}) + DateTimeSelector.new(date, options, html_options).select_date + end + + # Returns a set of html select-tags (one for hour and minute). + # You can set <tt>:time_separator</tt> key to format the output, and + # the <tt>:include_seconds</tt> option to include an input for seconds. + # + # If anything is passed in the html_options hash it will be applied to every select tag in the set. + # + # my_time = Time.now + 5.days + 7.hours + 3.minutes + 14.seconds + # + # # Generates a time select that defaults to the time in my_time. + # select_time(my_time) + # + # # Generates a time select that defaults to the current time (no specified time). + # select_time() + # + # # Generates a time select that defaults to the time in my_time, + # # which has fields separated by ':'. + # select_time(my_time, time_separator: ':') + # + # # Generates a time select that defaults to the time in my_time, + # # that also includes an input for seconds. + # select_time(my_time, include_seconds: true) + # + # # Generates a time select that defaults to the time in my_time, that has fields + # # separated by ':' and includes an input for seconds. + # select_time(my_time, time_separator: ':', include_seconds: true) + # + # # Generate a time select field with hours in the AM/PM format + # select_time(my_time, ampm: true) + # + # # Generates a time select field with hours that range from 2 to 14 + # select_time(my_time, start_hour: 2, end_hour: 14) + # + # # Generates a time select with a custom prompt. Use <tt>:prompt</tt> to true for generic prompts. + # select_time(my_time, prompt: {day: 'Choose day', month: 'Choose month', year: 'Choose year'}) + # select_time(my_time, prompt: {hour: true}) # generic prompt for hours + # select_time(my_time, prompt: true) # generic prompts for all + def select_time(datetime = Time.current, options = {}, html_options = {}) + DateTimeSelector.new(datetime, options, html_options).select_time + end + + # Returns a select tag with options for each of the seconds 0 through 59 with the current second selected. + # The <tt>datetime</tt> can be either a +Time+ or +DateTime+ object or an integer. + # Override the field name using the <tt>:field_name</tt> option, 'second' by default. + # + # my_time = Time.now + 16.minutes + # + # # Generates a select field for seconds that defaults to the seconds for the time in my_time. + # select_second(my_time) + # + # # Generates a select field for seconds that defaults to the number given. + # select_second(33) + # + # # Generates a select field for seconds that defaults to the seconds for the time in my_time + # # that is named 'interval' rather than 'second'. + # select_second(my_time, field_name: 'interval') + # + # # Generates a select field for seconds with a custom prompt. Use <tt>prompt: true</tt> for a + # # generic prompt. + # select_second(14, prompt: 'Choose seconds') + def select_second(datetime, options = {}, html_options = {}) + DateTimeSelector.new(datetime, options, html_options).select_second + end + + # Returns a select tag with options for each of the minutes 0 through 59 with the current minute selected. + # Also can return a select tag with options by <tt>minute_step</tt> from 0 through 59 with the 00 minute + # selected. The <tt>datetime</tt> can be either a +Time+ or +DateTime+ object or an integer. + # Override the field name using the <tt>:field_name</tt> option, 'minute' by default. + # + # my_time = Time.now + 6.hours + # + # # Generates a select field for minutes that defaults to the minutes for the time in my_time. + # select_minute(my_time) + # + # # Generates a select field for minutes that defaults to the number given. + # select_minute(14) + # + # # Generates a select field for minutes that defaults to the minutes for the time in my_time + # # that is named 'moment' rather than 'minute'. + # select_minute(my_time, field_name: 'moment') + # + # # Generates a select field for minutes with a custom prompt. Use <tt>prompt: true</tt> for a + # # generic prompt. + # select_minute(14, prompt: 'Choose minutes') + def select_minute(datetime, options = {}, html_options = {}) + DateTimeSelector.new(datetime, options, html_options).select_minute + end + + # Returns a select tag with options for each of the hours 0 through 23 with the current hour selected. + # The <tt>datetime</tt> can be either a +Time+ or +DateTime+ object or an integer. + # Override the field name using the <tt>:field_name</tt> option, 'hour' by default. + # + # my_time = Time.now + 6.hours + # + # # Generates a select field for hours that defaults to the hour for the time in my_time. + # select_hour(my_time) + # + # # Generates a select field for hours that defaults to the number given. + # select_hour(13) + # + # # Generates a select field for hours that defaults to the hour for the time in my_time + # # that is named 'stride' rather than 'hour'. + # select_hour(my_time, field_name: 'stride') + # + # # Generates a select field for hours with a custom prompt. Use <tt>prompt: true</tt> for a + # # generic prompt. + # select_hour(13, prompt: 'Choose hour') + # + # # Generate a select field for hours in the AM/PM format + # select_hour(my_time, ampm: true) + # + # # Generates a select field that includes options for hours from 2 to 14. + # select_hour(my_time, start_hour: 2, end_hour: 14) + def select_hour(datetime, options = {}, html_options = {}) + DateTimeSelector.new(datetime, options, html_options).select_hour + end + + # Returns a select tag with options for each of the days 1 through 31 with the current day selected. + # The <tt>date</tt> can also be substituted for a day number. + # If you want to display days with a leading zero set the <tt>:use_two_digit_numbers</tt> key in +options+ to true. + # Override the field name using the <tt>:field_name</tt> option, 'day' by default. + # + # my_date = Time.now + 2.days + # + # # Generates a select field for days that defaults to the day for the date in my_date. + # select_day(my_date) + # + # # Generates a select field for days that defaults to the number given. + # select_day(5) + # + # # Generates a select field for days that defaults to the number given, but displays it with two digits. + # select_day(5, use_two_digit_numbers: true) + # + # # Generates a select field for days that defaults to the day for the date in my_date + # # that is named 'due' rather than 'day'. + # select_day(my_date, field_name: 'due') + # + # # Generates a select field for days with a custom prompt. Use <tt>prompt: true</tt> for a + # # generic prompt. + # select_day(5, prompt: 'Choose day') + def select_day(date, options = {}, html_options = {}) + DateTimeSelector.new(date, options, html_options).select_day + end + + # Returns a select tag with options for each of the months January through December with the current month + # selected. The month names are presented as keys (what's shown to the user) and the month numbers (1-12) are + # used as values (what's submitted to the server). It's also possible to use month numbers for the presentation + # instead of names -- set the <tt>:use_month_numbers</tt> key in +options+ to true for this to happen. If you + # want both numbers and names, set the <tt>:add_month_numbers</tt> key in +options+ to true. If you would prefer + # to show month names as abbreviations, set the <tt>:use_short_month</tt> key in +options+ to true. If you want + # to use your own month names, set the <tt>:use_month_names</tt> key in +options+ to an array of 12 month names. + # If you want to display months with a leading zero set the <tt>:use_two_digit_numbers</tt> key in +options+ to true. + # Override the field name using the <tt>:field_name</tt> option, 'month' by default. + # + # # Generates a select field for months that defaults to the current month that + # # will use keys like "January", "March". + # select_month(Date.today) + # + # # Generates a select field for months that defaults to the current month that + # # is named "start" rather than "month". + # select_month(Date.today, field_name: 'start') + # + # # Generates a select field for months that defaults to the current month that + # # will use keys like "1", "3". + # select_month(Date.today, use_month_numbers: true) + # + # # Generates a select field for months that defaults to the current month that + # # will use keys like "1 - January", "3 - March". + # select_month(Date.today, add_month_numbers: true) + # + # # Generates a select field for months that defaults to the current month that + # # will use keys like "Jan", "Mar". + # select_month(Date.today, use_short_month: true) + # + # # Generates a select field for months that defaults to the current month that + # # will use keys like "Januar", "Marts." + # select_month(Date.today, use_month_names: %w(Januar Februar Marts ...)) + # + # # Generates a select field for months that defaults to the current month that + # # will use keys with two digit numbers like "01", "03". + # select_month(Date.today, use_two_digit_numbers: true) + # + # # Generates a select field for months with a custom prompt. Use <tt>prompt: true</tt> for a + # # generic prompt. + # select_month(14, prompt: 'Choose month') + def select_month(date, options = {}, html_options = {}) + DateTimeSelector.new(date, options, html_options).select_month + end + + # Returns a select tag with options for each of the five years on each side of the current, which is selected. + # The five year radius can be changed using the <tt>:start_year</tt> and <tt>:end_year</tt> keys in the + # +options+. Both ascending and descending year lists are supported by making <tt>:start_year</tt> less than or + # greater than <tt>:end_year</tt>. The <tt>date</tt> can also be substituted for a year given as a number. + # Override the field name using the <tt>:field_name</tt> option, 'year' by default. + # + # # Generates a select field for years that defaults to the current year that + # # has ascending year values. + # select_year(Date.today, start_year: 1992, end_year: 2007) + # + # # Generates a select field for years that defaults to the current year that + # # is named 'birth' rather than 'year'. + # select_year(Date.today, field_name: 'birth') + # + # # Generates a select field for years that defaults to the current year that + # # has descending year values. + # select_year(Date.today, start_year: 2005, end_year: 1900) + # + # # Generates a select field for years that defaults to the year 2006 that + # # has ascending year values. + # select_year(2006, start_year: 2000, end_year: 2010) + # + # # Generates a select field for years with a custom prompt. Use <tt>prompt: true</tt> for a + # # generic prompt. + # select_year(14, prompt: 'Choose year') + def select_year(date, options = {}, html_options = {}) + DateTimeSelector.new(date, options, html_options).select_year + end + + # Returns an html time tag for the given date or time. + # + # time_tag Date.today # => + # <time datetime="2010-11-04">November 04, 2010</time> + # time_tag Time.now # => + # <time datetime="2010-11-04T17:55:45+01:00">November 04, 2010 17:55</time> + # time_tag Date.yesterday, 'Yesterday' # => + # <time datetime="2010-11-03">Yesterday</time> + # time_tag Date.today, pubdate: true # => + # <time datetime="2010-11-04" pubdate="pubdate">November 04, 2010</time> + # time_tag Date.today, datetime: Date.today.strftime('%G-W%V') # => + # <time datetime="2010-W44">November 04, 2010</time> + # + # <%= time_tag Time.now do %> + # <span>Right now</span> + # <% end %> + # # => <time datetime="2010-11-04T17:55:45+01:00"><span>Right now</span></time> + def time_tag(date_or_time, *args, &block) + options = args.extract_options! + format = options.delete(:format) || :long + content = args.first || I18n.l(date_or_time, :format => format) + datetime = date_or_time.acts_like?(:time) ? date_or_time.xmlschema : date_or_time.iso8601 + + content_tag(:time, content, options.reverse_merge(:datetime => datetime), &block) + end + end + + class DateTimeSelector #:nodoc: + include ActionView::Helpers::TagHelper + + DEFAULT_PREFIX = 'date'.freeze + POSITION = { + :year => 1, :month => 2, :day => 3, :hour => 4, :minute => 5, :second => 6 + }.freeze + + AMPM_TRANSLATION = Hash[ + [[0, "12 AM"], [1, "01 AM"], [2, "02 AM"], [3, "03 AM"], + [4, "04 AM"], [5, "05 AM"], [6, "06 AM"], [7, "07 AM"], + [8, "08 AM"], [9, "09 AM"], [10, "10 AM"], [11, "11 AM"], + [12, "12 PM"], [13, "01 PM"], [14, "02 PM"], [15, "03 PM"], + [16, "04 PM"], [17, "05 PM"], [18, "06 PM"], [19, "07 PM"], + [20, "08 PM"], [21, "09 PM"], [22, "10 PM"], [23, "11 PM"]] + ].freeze + + def initialize(datetime, options = {}, html_options = {}) + @options = options.dup + @html_options = html_options.dup + @datetime = datetime + @options[:datetime_separator] ||= ' — ' + @options[:time_separator] ||= ' : ' + end + + def select_datetime + order = date_order.dup + order -= [:hour, :minute, :second] + @options[:discard_year] ||= true unless order.include?(:year) + @options[:discard_month] ||= true unless order.include?(:month) + @options[:discard_day] ||= true if @options[:discard_month] || !order.include?(:day) + @options[:discard_minute] ||= true if @options[:discard_hour] + @options[:discard_second] ||= true unless @options[:include_seconds] && !@options[:discard_minute] + + set_day_if_discarded + + if @options[:tag] && @options[:ignore_date] + select_time + else + [:day, :month, :year].each { |o| order.unshift(o) unless order.include?(o) } + order += [:hour, :minute, :second] unless @options[:discard_hour] + + build_selects_from_types(order) + end + end + + def select_date + order = date_order.dup + + @options[:discard_hour] = true + @options[:discard_minute] = true + @options[:discard_second] = true + + @options[:discard_year] ||= true unless order.include?(:year) + @options[:discard_month] ||= true unless order.include?(:month) + @options[:discard_day] ||= true if @options[:discard_month] || !order.include?(:day) + + set_day_if_discarded + + [:day, :month, :year].each { |o| order.unshift(o) unless order.include?(o) } + + build_selects_from_types(order) + end + + def select_time + order = [] + + @options[:discard_month] = true + @options[:discard_year] = true + @options[:discard_day] = true + @options[:discard_second] ||= true unless @options[:include_seconds] + + order += [:year, :month, :day] unless @options[:ignore_date] + + order += [:hour, :minute] + order << :second if @options[:include_seconds] + + build_selects_from_types(order) + end + + def select_second + if @options[:use_hidden] || @options[:discard_second] + build_hidden(:second, sec) if @options[:include_seconds] + else + build_options_and_select(:second, sec) + end + end + + def select_minute + if @options[:use_hidden] || @options[:discard_minute] + build_hidden(:minute, min) + else + build_options_and_select(:minute, min, :step => @options[:minute_step]) + end + end + + def select_hour + if @options[:use_hidden] || @options[:discard_hour] + build_hidden(:hour, hour) + else + options = {} + options[:ampm] = @options[:ampm] || false + options[:start] = @options[:start_hour] || 0 + options[:end] = @options[:end_hour] || 23 + build_options_and_select(:hour, hour, options) + end + end + + def select_day + if @options[:use_hidden] || @options[:discard_day] + build_hidden(:day, day || 1) + else + build_options_and_select(:day, day, :start => 1, :end => 31, :leading_zeros => false, :use_two_digit_numbers => @options[:use_two_digit_numbers]) + end + end + + def select_month + if @options[:use_hidden] || @options[:discard_month] + build_hidden(:month, month || 1) + else + month_options = [] + 1.upto(12) do |month_number| + options = { :value => month_number } + options[:selected] = "selected" if month == month_number + month_options << content_tag(:option, month_name(month_number), options) + "\n" + end + build_select(:month, month_options.join) + end + end + + def select_year + if !@datetime || @datetime == 0 + val = '1' + middle_year = Date.today.year + else + val = middle_year = year + end + + if @options[:use_hidden] || @options[:discard_year] + build_hidden(:year, val) + else + options = {} + options[:start] = @options[:start_year] || middle_year - 5 + options[:end] = @options[:end_year] || middle_year + 5 + options[:step] = options[:start] < options[:end] ? 1 : -1 + options[:leading_zeros] = false + options[:max_years_allowed] = @options[:max_years_allowed] || 1000 + + if (options[:end] - options[:start]).abs > options[:max_years_allowed] + raise ArgumentError, "There are too many years options to be built. Are you sure you haven't mistyped something? You can provide the :max_years_allowed parameter." + end + + build_options_and_select(:year, val, options) + end + end + + private + %w( sec min hour day month year ).each do |method| + define_method(method) do + @datetime.kind_of?(Numeric) ? @datetime : @datetime.send(method) if @datetime + end + end + + # If the day is hidden, the day should be set to the 1st so all month and year choices are + # valid. Otherwise, February 31st or February 29th, 2011 can be selected, which are invalid. + def set_day_if_discarded + if @datetime && @options[:discard_day] + @datetime = @datetime.change(:day => 1) + end + end + + # Returns translated month names, but also ensures that a custom month + # name array has a leading nil element. + def month_names + @month_names ||= begin + month_names = @options[:use_month_names] || translated_month_names + month_names.unshift(nil) if month_names.size < 13 + month_names + end + end + + # Returns translated month names. + # => [nil, "January", "February", "March", + # "April", "May", "June", "July", + # "August", "September", "October", + # "November", "December"] + # + # If <tt>:use_short_month</tt> option is set + # => [nil, "Jan", "Feb", "Mar", "Apr", "May", "Jun", + # "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] + def translated_month_names + key = @options[:use_short_month] ? :'date.abbr_month_names' : :'date.month_names' + I18n.translate(key, :locale => @options[:locale]) + end + + # Lookup month name for number. + # month_name(1) => "January" + # + # If <tt>:use_month_numbers</tt> option is passed + # month_name(1) => 1 + # + # If <tt>:use_two_month_numbers</tt> option is passed + # month_name(1) => '01' + # + # If <tt>:add_month_numbers</tt> option is passed + # month_name(1) => "1 - January" + def month_name(number) + if @options[:use_month_numbers] + number + elsif @options[:use_two_digit_numbers] + sprintf "%02d", number + elsif @options[:add_month_numbers] + "#{number} - #{month_names[number]}" + else + month_names[number] + end + end + + def date_order + @date_order ||= @options[:order] || translated_date_order + end + + def translated_date_order + date_order = I18n.translate(:'date.order', :locale => @options[:locale], :default => []) + date_order = date_order.map { |element| element.to_sym } + + forbidden_elements = date_order - [:year, :month, :day] + if forbidden_elements.any? + raise StandardError, + "#{@options[:locale]}.date.order only accepts :year, :month and :day" + end + + date_order + end + + # Build full select tag from date type and options. + def build_options_and_select(type, selected, options = {}) + build_select(type, build_options(selected, options)) + end + + # Build select option html from date value and options. + # build_options(15, start: 1, end: 31) + # => "<option value="1">1</option> + # <option value="2">2</option> + # <option value="3">3</option>..." + # + # If <tt>use_two_digit_numbers: true</tt> option is passed + # build_options(15, start: 1, end: 31, use_two_digit_numbers: true) + # => "<option value="1">01</option> + # <option value="2">02</option> + # <option value="3">03</option>..." + # + # If <tt>:step</tt> options is passed + # build_options(15, start: 1, end: 31, step: 2) + # => "<option value="1">1</option> + # <option value="3">3</option> + # <option value="5">5</option>..." + def build_options(selected, options = {}) + options = { + leading_zeros: true, ampm: false, use_two_digit_numbers: false + }.merge!(options) + + start = options.delete(:start) || 0 + stop = options.delete(:end) || 59 + step = options.delete(:step) || 1 + leading_zeros = options.delete(:leading_zeros) + + select_options = [] + start.step(stop, step) do |i| + value = leading_zeros ? sprintf("%02d", i) : i + tag_options = { :value => value } + tag_options[:selected] = "selected" if selected == i + text = options[:use_two_digit_numbers] ? sprintf("%02d", i) : value + text = options[:ampm] ? AMPM_TRANSLATION[i] : text + select_options << content_tag(:option, text, tag_options) + end + + (select_options.join("\n") + "\n").html_safe + end + + # Builds select tag from date type and html select options. + # build_select(:month, "<option value="1">January</option>...") + # => "<select id="post_written_on_2i" name="post[written_on(2i)]"> + # <option value="1">January</option>... + # </select>" + def build_select(type, select_options_as_html) + select_options = { + :id => input_id_from_type(type), + :name => input_name_from_type(type) + }.merge!(@html_options) + select_options[:disabled] = 'disabled' if @options[:disabled] + select_options[:class] = type if @options[:with_css_classes] + + select_html = "\n" + select_html << content_tag(:option, '', :value => '') + "\n" if @options[:include_blank] + select_html << prompt_option_tag(type, @options[:prompt]) + "\n" if @options[:prompt] + select_html << select_options_as_html + + (content_tag(:select, select_html.html_safe, select_options) + "\n").html_safe + end + + # Builds a prompt option tag with supplied options or from default options. + # prompt_option_tag(:month, prompt: 'Select month') + # => "<option value="">Select month</option>" + def prompt_option_tag(type, options) + prompt = case options + when Hash + default_options = {:year => false, :month => false, :day => false, :hour => false, :minute => false, :second => false} + default_options.merge!(options)[type.to_sym] + when String + options + else + I18n.translate(:"datetime.prompts.#{type}", :locale => @options[:locale]) + end + + prompt ? content_tag(:option, prompt, :value => '') : '' + end + + # Builds hidden input tag for date part and value. + # build_hidden(:year, 2008) + # => "<input id="post_written_on_1i" name="post[written_on(1i)]" type="hidden" value="2008" />" + def build_hidden(type, value) + select_options = { + :type => "hidden", + :id => input_id_from_type(type), + :name => input_name_from_type(type), + :value => value + }.merge!(@html_options.slice(:disabled)) + select_options[:disabled] = 'disabled' if @options[:disabled] + + tag(:input, select_options) + "\n".html_safe + end + + # Returns the name attribute for the input tag. + # => post[written_on(1i)] + def input_name_from_type(type) + prefix = @options[:prefix] || ActionView::Helpers::DateTimeSelector::DEFAULT_PREFIX + prefix += "[#{@options[:index]}]" if @options.has_key?(:index) + + field_name = @options[:field_name] || type + if @options[:include_position] + field_name += "(#{ActionView::Helpers::DateTimeSelector::POSITION[type]}i)" + end + + @options[:discard_type] ? prefix : "#{prefix}[#{field_name}]" + end + + # Returns the id attribute for the input tag. + # => "post_written_on_1i" + def input_id_from_type(type) + id = input_name_from_type(type).gsub(/([\[\(])|(\]\[)/, '_').gsub(/[\]\)]/, '') + id = @options[:namespace] + '_' + id if @options[:namespace] + + id + end + + # Given an ordering of datetime components, create the selection HTML + # and join them with their appropriate separators. + def build_selects_from_types(order) + select = '' + first_visible = order.find { |type| !@options[:"discard_#{type}"] } + order.reverse.each do |type| + separator = separator(type) unless type == first_visible # don't add before first visible field + select.insert(0, separator.to_s + send("select_#{type}").to_s) + end + select.html_safe + end + + # Returns the separator for a given datetime component. + def separator(type) + return "" if @options[:use_hidden] + + case type + when :year, :month, :day + @options[:"discard_#{type}"] ? "" : @options[:date_separator] + when :hour + (@options[:discard_year] && @options[:discard_day]) ? "" : @options[:datetime_separator] + when :minute, :second + @options[:"discard_#{type}"] ? "" : @options[:time_separator] + end + end + end + + class FormBuilder + # Wraps ActionView::Helpers::DateHelper#date_select for form builders: + # + # <%= form_for @person do |f| %> + # <%= f.date_select :birth_date %> + # <%= f.submit %> + # <% end %> + # + # Please refer to the documentation of the base helper for details. + def date_select(method, options = {}, html_options = {}) + @template.date_select(@object_name, method, objectify_options(options), html_options) + end + + # Wraps ActionView::Helpers::DateHelper#time_select for form builders: + # + # <%= form_for @race do |f| %> + # <%= f.time_select :average_lap %> + # <%= f.submit %> + # <% end %> + # + # Please refer to the documentation of the base helper for details. + def time_select(method, options = {}, html_options = {}) + @template.time_select(@object_name, method, objectify_options(options), html_options) + end + + # Wraps ActionView::Helpers::DateHelper#datetime_select for form builders: + # + # <%= form_for @person do |f| %> + # <%= f.time_select :last_request_at %> + # <%= f.submit %> + # <% end %> + # + # Please refer to the documentation of the base helper for details. + def datetime_select(method, options = {}, html_options = {}) + @template.datetime_select(@object_name, method, objectify_options(options), html_options) + end + end + end +end |