Action View 日期輔助工具

傳回一組選取標籤（一個代表年、一個代表月、一個代表日），這些標籤會預先選取，以便存取指定在指定至範本物件（以 object 識別）上的日期屬性（以 method 識別）。

選項

• :use_month_numbers - 如果要使用月份號碼，而不是月份名稱（例如使用「2」取代「二月」），請設定為 true。

• :use_two_digit_numbers - 如果要顯示兩位數字的月份和日期號碼（例如，使用「02」取代「二月」和「08」取代「8」），請設定為 true。

• :use_short_month - 如果要使用縮寫的月份名稱，而不是完整的月份名稱（例如，使用「2月」取代「二月」），請設定為 true。

• :add_month_numbers - 如果要同時使用月份號碼和月份名稱（例如，使用「2 - 二月」取代「二月」），請設定為 true。

• :use_month_names - 如果要自訂月份名稱，請設定為包含 12 個月份名稱的陣列。注意：您也可以使用 Rails 的 i18n 功能來執行此作業。

• :month_format_string - 設定為格式字串。這個字串會傳遞給 :number（整數）和 :name（字串）鍵。格式字串會類似「%{name} (%<number>02d)」這種形式。請參閱 Kernel.sprintf 的說明文件以了解格式序列。

• :date_separator - 指定一個字串來區隔日期欄位。預設為「」（即無內容）。

• :time_separator - 指定一個字串來區隔時間欄位。預設為「 : 」.

• :datetime_separator- 指定一個字串來區隔日期和時間欄位。預設為「 &mdash; 」.

• :start_year - 設定年分選取的開始年份。如果您要建立新紀錄，預設為 Date.today.year - 5。在編輯現有紀錄時，:start_year 預設為目前選取年份減去 5。

• :end_year - 設定選擇年分的結束年份。若建立新紀錄，預設為 Date.today.year + 5。編輯現有紀錄時，:end_year 預設為目前選取的年份加 5。

• :year_format - 設定年分選擇的格式。應傳入 Lambda。

• :day_format - 設定日份選擇的格式。應傳入 Lambda。

• :discard_day - 若不想顯示日份選擇，請設定為 true。這會將日份包含在隱藏欄位，而不是顯示為選擇欄位。另外，請注意這會隱含設定日份為指定月份的第一天，以避免產生類似 31 月 2 月等無效日期。

• :discard_month - 若不想顯示月份選擇，請設定為 true。這會將月份包含在隱藏欄位，而不是顯示為選擇欄位。另外，請注意這會隱含設定 :discard_day 為 true。

• :discard_year - 若不想顯示年份選擇，請設定為 true。這會將年份包含在隱藏欄位，而不是顯示為選擇欄位。

• :order - 設定包含 :day、:month 及 :year 的陣列，以自訂選擇欄位顯示順序。若省略任何符號，則不會顯示相對應的選擇欄位（例如設定 discard_xxx: true）。預設為各自區域設定定義的順序（例如隨附 Rails 的 en 區域設定中的 [:year, :month, :day]）。

• :include_blank - 在每個選擇欄位中包含空白選項，以設定空日期。

• :default - 若受影響的日期未設定或為 nil，則設定預設日期。

• :selected - 設定覆蓋實際值的日期。

• :disabled - 若要將選擇欄位顯示為停用狀態，則設定為 true。

• :prompt - 設定為 true（用於一般提示）、提示字串，或是 :year、:month、:day、:hour、:minute 及 :second 的提示字串雜湊。設定此選項會在選擇選項前置一般提示（日期、月份、年份、小時、分鐘、秒數）或指定的提示字串。

• :with_css_classes - 設定為 true 或字串雜湊。若要指定選擇標籤的共用樣式，請設定為 true。這會自動設定類別「year」、「month」、「day」、「hour」、「minute」及「second」。:year、:month、:day、:hour、:minute 及 :second 的字串雜湊會使用指定的值擴充選擇類型。使用 html_options 來修改設定中的每個選擇標籤。

• :use_hidden - 若只想產生隱藏式輸入標籤，則設定為 true。

若在 html_options 雜湊中傳入任何值，則會套用至設定中的每個選擇標籤。

注意：已捨棄的選擇預設為 1。因此，若無月份選擇，則預設為 1 月。

# 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 today's 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' })

# Generates a date select with custom year format.
date_select("article", "written_on", year_format: ->(year) { "Heisei #{year - 1988}" })

# Generates a date select with custom day format.
date_select("article", "written_on", day_format: ->(day) { day.ordinalize })

已準備好選擇項目，以多重參數指派給 Active Record 物件。

注意：若日份未包含為選項，而月份則包含，則會將日份設定為 1，以確保所有月份選項都有效。

傳回一系列預先選取的選取標籤（一項指定給年份、月份、日期、小時及分鐘）用於存取指定之 datetime-based 屬性（以 method 指定），在指定於範本的物件上（以 object 指定）。

如果在 html_options hash 內傳入任何內容，將套用於這組的每一個選取標籤。

# 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

已準備好選擇項目，以多重參數指派給 Active Record 物件。

報告兩個 Time、Date 或 DateTime 物件或整數之間的時間距離，單位為秒。通過 include_seconds: true 如果距離 < 1 分鐘 29 秒，可以獲得更詳細的近似值。距離會根據以下表格報告

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)

使用 include_seconds: true 且差異 < 1 分鐘 29 秒

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

使用 scope 選項，可以定義一個客製化範圍給 Rails 來查詢翻譯。

例如，可以在區域設定（例如 en.yml）中定義以下內容。

datetime:
  distance_in_words:
    short:
      about_x_hours:
        one: 'an hour'
        other: '%{count} hours'

請參閱 github.com/svenfuchs/rails-i18n/blob/master/rails/locale/en.yml 以取得更多範例。

接著會產生以下結果

from_time = Time.now
distance_of_time_in_words(from_time, from_time + 50.minutes, scope: 'datetime.distance_in_words.short') # => "an hour"
distance_of_time_in_words(from_time, from_time + 3.hours, scope: 'datetime.distance_in_words.short')    # => "3 hours"

傳回一組 HTML 選取標籤（一項指定給年份、月份和日期），預先選取 date。可以使用 :order 選項明確設定標籤的順序，其中包含一個包含 :year、:month 及 :day 符號的陣列，順序依需求而定。如果傳遞給 :order 選項的陣列沒有包含這三個符號，所有標籤都將隱藏。

如果在 html_options hash 內傳入任何內容，將套用於這組的每一個選取標籤。

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

傳回一組 HTML 選取標籤（一項指定給年份、月份、日期、小時、分鐘和秒），預先選取 datetime。也可以使用 :order 選項明確設定標籤的順序，其中包含一個包含 :year、:month 及 :day 符號的陣列，順序依需求而定。如果你沒有提供 Symbol，它會附加到傳入的 :order 上。你也可以將 :date_separator、:datetime_separator 及 :time_separator 鍵加入至 options 來控制各元素的視覺顯示。

如果在 html_options hash 內傳入任何內容，將套用於這組的每一個選取標籤。

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

傳回一個選取標記，其中選項包含 1 到 31 的所有日期，且會選取目前的日期。也可以以日期代號取代 date。如果想要顯示含前導 0 的日期，請將 options 中的 :use_two_digit_numbers 鍵設為 true。使用 :field_name 選項覆寫欄位名稱，預設為「day」。

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')

傳回一個選取標記，其中選項包含 0 到 23 的所有小時數，且會選取目前的時數。datetime 可以是 Time 或 DateTime 物件，也可以是整數。使用 :field_name 選項覆寫欄位名稱，預設為「hour」。

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)

傳回一個選取標記，其中選項包含 0 到 59 的所有分鐘數，且會選取目前的分鐘數。也可以依據 minute_step，傳回一個選取標記，其中選項包含 0 到 59，且會選取 00 分鐘數。datetime 可以是 Time 或 DateTime 物件，也可以是整數。使用 :field_name 選項覆寫欄位名稱，預設為「minute」。

my_time = Time.now + 10.minutes

# 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')

傳回一個選取標記，其中選項包含 1 月到 12 月，且會選取目前的月份。月份名稱顯示為項目名稱（顯示給使用者），月份號碼（1 到 12）則用作值（提交到伺服器）。也可以使用月份號碼來呈現而非月份名稱—將 options 中的 :use_month_numbers 鍵設為 true 即可執行此動作。如果想要顯示月份號碼和月份名稱，請將 options 中的 :add_month_numbers 鍵設為 true。如果想要顯示月份名稱的縮寫，請將 options 中的 :use_short_month 鍵設為 true。如果想要使用您自己的月份名稱，請將 options 中的 :use_month_names 鍵設為包含 12 個月份名稱的陣列。如果想要顯示含前導 0 的月份，請將 options 中的 :use_two_digit_numbers 鍵設為 true。使用 :field_name 選項覆寫欄位名稱，預設為「month」。

# 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')

傳回選取標籤，其中選項為 0 到 59 的秒數，會選取目前的秒數。datetime 可以是 Time 或 DateTime 物件，或整數。使用 :field_name 選項覆寫欄位名稱，預設為「second」。

my_time = Time.now + 16.seconds

# 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')

傳回一系列 HTML 選取標籤（一組小時和一組分鐘）。您可設定 :time_separator 鍵來設定輸出的格式，並設定 :include_seconds 選項以納入秒數輸入。

如果在 html_options hash 內傳入任何內容，將套用於這組的每一個選取標籤。

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

傳回選取標籤，其中選項為目前的上下各五年，且會選取目前的年份。五年範圍可透過 options 中的 :start_year 和 :end_year 鍵來變更。增減年份清單亦受到支援，方法是讓 :start_year 小於或大於 :end_year。date 也可以代換為數字年份。使用 :field_name 選項覆寫欄位名稱，預設為「year」。

# 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')

類似於 distance_of_time_in_words，不過將 to_time 固定為 Time.now。

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

請注意，您無法將 Numeric 值傳遞給 time_ago_in_words。

傳回一系列選取標籤（小時、分鐘及可選擇的秒數），這些標籤會預先選取，以便存取範本賦予物件上時間屬性（由 method 識別）（由 object 識別）。您可以透過 :include_seconds 納入秒數。您可以透過 :ampm 選項取得 AM/PM 格式的時間。

此方法也會產生 3 個輸入隱藏標籤，分別代表實際年份、月份及日期，除非選項 :ignore_date 設為 true。如果您將 :ignore_date 設為 true，則必須在表單的同一方法上有一個 date_select，否則會產生例外狀況。

如果在 html_options hash 內傳入任何內容，將套用於這組的每一個選取標籤。

# 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 }

# You can set :ignore_date option to true which will remove the hidden inputs for day,
# month, and year that are set by default on this helper when you only want the time inputs
time_select 'game', 'game_time', { ignore_date: true }

已準備好選擇項目，以多重參數指派給 Active Record 物件。

注意：若日份未包含為選項，而月份則包含，則會將日份設定為 1，以確保所有月份選項都有效。

傳回給定日期或時間的 HTML 時間標籤。

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, 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>