430 lines
23 KiB
Ruby
Executable file
430 lines
23 KiB
Ruby
Executable file
require "date"
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module ActionView
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module Helpers
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# The Date Helper primarily creates select/option tags for different kinds of dates and date elements. All of the select-type methods
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# share a number of common options that are as follows:
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#
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# * <tt>:prefix</tt> - overwrites the default prefix of "date" used for the select names. So specifying "birthday" would give
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# birthday[month] instead of date[month] if passed to the select_month method.
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# * <tt>:include_blank</tt> - set to true if it should be possible to set an empty date.
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# * <tt>:discard_type</tt> - set to true if you want to discard the type part of the select name. If set to true, the select_month
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# method would use simply "date" (which can be overwritten using <tt>:prefix</tt>) instead of "date[month]".
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module DateHelper
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DEFAULT_PREFIX = 'date' unless const_defined?('DEFAULT_PREFIX')
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# Reports the approximate distance in time between two Time or Date objects or integers as seconds.
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# Set <tt>include_seconds</tt> to true if you want more detailed approximations when distance < 1 min, 29 secs
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# Distances are reported base on the following table:
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#
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# 0 <-> 29 secs # => less than a minute
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# 30 secs <-> 1 min, 29 secs # => 1 minute
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# 1 min, 30 secs <-> 44 mins, 29 secs # => [2..44] minutes
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# 44 mins, 30 secs <-> 89 mins, 29 secs # => about 1 hour
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# 89 mins, 29 secs <-> 23 hrs, 59 mins, 29 secs # => about [2..24] hours
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# 23 hrs, 59 mins, 29 secs <-> 47 hrs, 59 mins, 29 secs # => 1 day
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# 47 hrs, 59 mins, 29 secs <-> 29 days, 23 hrs, 59 mins, 29 secs # => [2..29] days
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# 29 days, 23 hrs, 59 mins, 30 secs <-> 59 days, 23 hrs, 59 mins, 29 secs # => about 1 month
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# 59 days, 23 hrs, 59 mins, 30 secs <-> 1 yr minus 31 secs # => [2..12] months
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# 1 yr minus 30 secs <-> 2 yrs minus 31 secs # => about 1 year
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# 2 yrs minus 30 secs <-> max time or date # => over [2..X] years
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#
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# With include_seconds = true and the difference < 1 minute 29 seconds
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# 0-4 secs # => less than 5 seconds
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# 5-9 secs # => less than 10 seconds
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# 10-19 secs # => less than 20 seconds
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# 20-39 secs # => half a minute
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# 40-59 secs # => less than a minute
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# 60-89 secs # => 1 minute
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#
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# Examples:
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#
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# from_time = Time.now
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# distance_of_time_in_words(from_time, from_time + 50.minutes) # => about 1 hour
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# distance_of_time_in_words(from_time, from_time + 15.seconds) # => less than a minute
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# distance_of_time_in_words(from_time, from_time + 15.seconds, true) # => less than 20 seconds
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#
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# Note: Rails calculates one year as 365.25 days.
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def distance_of_time_in_words(from_time, to_time = 0, include_seconds = false)
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from_time = from_time.to_time if from_time.respond_to?(:to_time)
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to_time = to_time.to_time if to_time.respond_to?(:to_time)
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distance_in_minutes = (((to_time - from_time).abs)/60).round
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distance_in_seconds = ((to_time - from_time).abs).round
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case distance_in_minutes
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when 0..1
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return (distance_in_minutes == 0) ? 'less than a minute' : '1 minute' unless include_seconds
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case distance_in_seconds
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when 0..4 then 'less than 5 seconds'
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when 5..9 then 'less than 10 seconds'
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when 10..19 then 'less than 20 seconds'
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when 20..39 then 'half a minute'
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when 40..59 then 'less than a minute'
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else '1 minute'
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end
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when 2..44 then "#{distance_in_minutes} minutes"
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when 45..89 then 'about 1 hour'
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when 90..1439 then "about #{(distance_in_minutes.to_f / 60.0).round} hours"
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when 1440..2879 then '1 day'
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when 2880..43199 then "#{(distance_in_minutes / 1440).round} days"
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when 43200..86399 then 'about 1 month'
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when 86400..525959 then "#{(distance_in_minutes / 43200).round} months"
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when 525960..1051919 then 'about 1 year'
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else "over #{(distance_in_minutes / 525960).round} years"
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end
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end
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# Like distance_of_time_in_words, but where <tt>to_time</tt> is fixed to <tt>Time.now</tt>.
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def time_ago_in_words(from_time, include_seconds = false)
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distance_of_time_in_words(from_time, Time.now, include_seconds)
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end
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alias_method :distance_of_time_in_words_to_now, :time_ago_in_words
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# Returns a set of select tags (one for year, month, and day) pre-selected for accessing a specified date-based attribute (identified by
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# +method+) on an object assigned to the template (identified by +object+). It's possible to tailor the selects through the +options+ hash,
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# which accepts all the keys that each of the individual select builders do (like :use_month_numbers for select_month) as well as a range of
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# discard options. The discard options are <tt>:discard_year</tt>, <tt>:discard_month</tt> and <tt>:discard_day</tt>. Set to true, they'll
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# drop the respective select. Discarding the month select will also automatically discard the day select. It's also possible to explicitly
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# 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
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# the desired order. Symbols may be omitted and the respective select is not included.
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#
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# Passing :disabled => true as part of the +options+ will make elements inaccessible for change.
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#
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# NOTE: Discarded selects will default to 1. So if no month select is available, January will be assumed.
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#
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# Examples:
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#
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# date_select("post", "written_on")
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# date_select("post", "written_on", :start_year => 1995)
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# date_select("post", "written_on", :start_year => 1995, :use_month_numbers => true,
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# :discard_day => true, :include_blank => true)
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# date_select("post", "written_on", :order => [:day, :month, :year])
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# date_select("user", "birthday", :order => [:month, :day])
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#
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# The selects are prepared for multi-parameter assignment to an Active Record object.
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def date_select(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_date_select_tag(options)
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end
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# Returns a set of select tags (one for hour, minute and optionally second) pre-selected for accessing a specified
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# time-based attribute (identified by +method+) on an object assigned to the template (identified by +object+).
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# You can include the seconds with <tt>:include_seconds</tt>.
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# Examples:
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#
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# time_select("post", "sunrise")
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# time_select("post", "start_time", :include_seconds => true)
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#
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# The selects are prepared for multi-parameter assignment to an Active Record object.
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def time_select(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_time_select_tag(options)
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end
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# Returns a set of select tags (one for year, month, day, hour, and minute) pre-selected for accessing a specified datetime-based
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# attribute (identified by +method+) on an object assigned to the template (identified by +object+). Examples:
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#
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# datetime_select("post", "written_on")
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# datetime_select("post", "written_on", :start_year => 1995)
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#
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# The selects are prepared for multi-parameter assignment to an Active Record object.
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def datetime_select(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_datetime_select_tag(options)
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end
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# Returns a set of html select-tags (one for year, month, day, hour, and minute) pre-selected with the +datetime+.
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# It's also possible to explicitly set the order of the tags using the <tt>:order</tt> option with an array of
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# symbols <tt>:year</tt>, <tt>:month</tt> and <tt>:day</tt> in the desired order. If you do not supply a Symbol, it
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# will be appened onto the <tt>:order</tt> passed in. You can also add <tt>:date_separator</tt> and <tt>:time_separator</tt>
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# keys to the +options+ to control visual display of the elements.
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def select_datetime(datetime = Time.now, options = {})
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separator = options[:datetime_separator] || ''
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select_date(datetime, options) + separator + select_time(datetime, options)
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end
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# Returns a set of html select-tags (one for year, month, and day) pre-selected with the +date+.
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# It's possible to explicitly set the order of the tags using the <tt>:order</tt> option with an array of
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# symbols <tt>:year</tt>, <tt>:month</tt> and <tt>:day</tt> in the desired order. If you do not supply a Symbol, it
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# will be appened onto the <tt>:order</tt> passed in.
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def select_date(date = Date.today, options = {})
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options[:order] ||= []
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[:year, :month, :day].each { |o| options[:order].push(o) unless options[:order].include?(o) }
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select_date = ''
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options[:order].each do |o|
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select_date << self.send("select_#{o}", date, options)
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end
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select_date
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end
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# Returns a set of html select-tags (one for hour and minute)
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# You can set <tt>:add_separator</tt> key to format the output.
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def select_time(datetime = Time.now, options = {})
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separator = options[:time_separator] || ''
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select_hour(datetime, options) + separator + select_minute(datetime, options) + (options[:include_seconds] ? separator + select_second(datetime, options) : '')
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end
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# Returns a select tag with options for each of the seconds 0 through 59 with the current second selected.
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# The <tt>second</tt> can also be substituted for a second number.
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# Override the field name using the <tt>:field_name</tt> option, 'second' by default.
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def select_second(datetime, options = {})
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val = datetime ? (datetime.kind_of?(Fixnum) ? datetime : datetime.sec) : ''
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if options[:use_hidden]
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options[:include_seconds] ? hidden_html(options[:field_name] || 'second', val, options) : ''
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else
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second_options = []
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0.upto(59) do |second|
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second_options << ((val == second) ?
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%(<option value="#{leading_zero_on_single_digits(second)}" selected="selected">#{leading_zero_on_single_digits(second)}</option>\n) :
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%(<option value="#{leading_zero_on_single_digits(second)}">#{leading_zero_on_single_digits(second)}</option>\n)
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)
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end
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select_html(options[:field_name] || 'second', second_options, options)
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end
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end
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# Returns a select tag with options for each of the minutes 0 through 59 with the current minute selected.
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# Also can return a select tag with options by <tt>minute_step</tt> from 0 through 59 with the 00 minute selected
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# The <tt>minute</tt> can also be substituted for a minute number.
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# Override the field name using the <tt>:field_name</tt> option, 'minute' by default.
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def select_minute(datetime, options = {})
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val = datetime ? (datetime.kind_of?(Fixnum) ? datetime : datetime.min) : ''
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if options[:use_hidden]
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hidden_html(options[:field_name] || 'minute', val, options)
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else
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minute_options = []
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0.step(59, options[:minute_step] || 1) do |minute|
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minute_options << ((val == minute) ?
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%(<option value="#{leading_zero_on_single_digits(minute)}" selected="selected">#{leading_zero_on_single_digits(minute)}</option>\n) :
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%(<option value="#{leading_zero_on_single_digits(minute)}">#{leading_zero_on_single_digits(minute)}</option>\n)
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)
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end
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select_html(options[:field_name] || 'minute', minute_options, options)
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end
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end
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# Returns a select tag with options for each of the hours 0 through 23 with the current hour selected.
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# The <tt>hour</tt> can also be substituted for a hour number.
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# Override the field name using the <tt>:field_name</tt> option, 'hour' by default.
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def select_hour(datetime, options = {})
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val = datetime ? (datetime.kind_of?(Fixnum) ? datetime : datetime.hour) : ''
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if options[:use_hidden]
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hidden_html(options[:field_name] || 'hour', val, options)
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else
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hour_options = []
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0.upto(23) do |hour|
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hour_options << ((val == hour) ?
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%(<option value="#{leading_zero_on_single_digits(hour)}" selected="selected">#{leading_zero_on_single_digits(hour)}</option>\n) :
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%(<option value="#{leading_zero_on_single_digits(hour)}">#{leading_zero_on_single_digits(hour)}</option>\n)
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)
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end
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select_html(options[:field_name] || 'hour', hour_options, options)
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end
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end
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# Returns a select tag with options for each of the days 1 through 31 with the current day selected.
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# The <tt>date</tt> can also be substituted for a hour number.
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# Override the field name using the <tt>:field_name</tt> option, 'day' by default.
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def select_day(date, options = {})
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val = date ? (date.kind_of?(Fixnum) ? date : date.day) : ''
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if options[:use_hidden]
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hidden_html(options[:field_name] || 'day', val, options)
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else
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day_options = []
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1.upto(31) do |day|
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day_options << ((val == day) ?
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%(<option value="#{day}" selected="selected">#{day}</option>\n) :
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%(<option value="#{day}">#{day}</option>\n)
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)
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end
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select_html(options[:field_name] || 'day', day_options, options)
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end
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end
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# Returns a select tag with options for each of the months January through December with the current month selected.
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# The month names are presented as keys (what's shown to the user) and the month numbers (1-12) are used as values
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# (what's submitted to the server). It's also possible to use month numbers for the presentation instead of names --
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# set the <tt>:use_month_numbers</tt> key in +options+ to true for this to happen. If you want both numbers and names,
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# set the <tt>:add_month_numbers</tt> key in +options+ to true. If you would prefer to show month names as abbreviations,
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# set the <tt>:use_short_month</tt> key in +options+ to true. If you want to use your own month names, set the
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# <tt>:use_month_names</tt> key in +options+ to an array of 12 month names.
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#
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# Examples:
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#
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# select_month(Date.today) # Will use keys like "January", "March"
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# select_month(Date.today, :use_month_numbers => true) # Will use keys like "1", "3"
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# select_month(Date.today, :add_month_numbers => true) # Will use keys like "1 - January", "3 - March"
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# select_month(Date.today, :use_short_month => true) # Will use keys like "Jan", "Mar"
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# select_month(Date.today, :use_month_names => %w(Januar Februar Marts ...)) # Will use keys like "Januar", "Marts"
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#
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# Override the field name using the <tt>:field_name</tt> option, 'month' by default.
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def select_month(date, options = {})
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val = date ? (date.kind_of?(Fixnum) ? date : date.month) : ''
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if options[:use_hidden]
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hidden_html(options[:field_name] || 'month', val, options)
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else
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month_options = []
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month_names = options[:use_month_names] || (options[:use_short_month] ? Date::ABBR_MONTHNAMES : Date::MONTHNAMES)
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month_names.unshift(nil) if month_names.size < 13
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1.upto(12) do |month_number|
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month_name = if options[:use_month_numbers]
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month_number
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elsif options[:add_month_numbers]
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month_number.to_s + ' - ' + month_names[month_number]
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else
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month_names[month_number]
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end
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month_options << ((val == month_number) ?
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%(<option value="#{month_number}" selected="selected">#{month_name}</option>\n) :
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%(<option value="#{month_number}">#{month_name}</option>\n)
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)
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end
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select_html(options[:field_name] || 'month', month_options, options)
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end
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end
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# 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
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# can be changed using the <tt>:start_year</tt> and <tt>:end_year</tt> keys in the +options+. Both ascending and descending year
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# 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
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# substituted for a year given as a number. Example:
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#
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# select_year(Date.today, :start_year => 1992, :end_year => 2007) # ascending year values
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# select_year(Date.today, :start_year => 2005, :end_year => 1900) # descending year values
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# select_year(2006, :start_year => 2000, :end_year => 2010)
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#
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# Override the field name using the <tt>:field_name</tt> option, 'year' by default.
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def select_year(date, options = {})
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val = date ? (date.kind_of?(Fixnum) ? date : date.year) : ''
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if options[:use_hidden]
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hidden_html(options[:field_name] || 'year', val, options)
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else
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year_options = []
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y = date ? (date.kind_of?(Fixnum) ? (y = (date == 0) ? Date.today.year : date) : date.year) : Date.today.year
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start_year, end_year = (options[:start_year] || y-5), (options[:end_year] || y+5)
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step_val = start_year < end_year ? 1 : -1
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start_year.step(end_year, step_val) do |year|
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year_options << ((val == year) ?
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%(<option value="#{year}" selected="selected">#{year}</option>\n) :
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%(<option value="#{year}">#{year}</option>\n)
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)
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end
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select_html(options[:field_name] || 'year', year_options, options)
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end
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end
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private
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def select_html(type, html_options, options)
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name_and_id_from_options(options, type)
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select_html = %(<select id="#{options[:id]}" name="#{options[:name]}")
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select_html << %( disabled="disabled") if options[:disabled]
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select_html << %(>\n)
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select_html << %(<option value=""></option>\n) if options[:include_blank]
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select_html << html_options.to_s
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select_html << "</select>\n"
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end
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def hidden_html(type, value, options)
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name_and_id_from_options(options, type)
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hidden_html = %(<input type="hidden" id="#{options[:id]}" name="#{options[:name]}" value="#{value}" />\n)
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end
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def name_and_id_from_options(options, type)
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options[:name] = (options[:prefix] || DEFAULT_PREFIX) + (options[:discard_type] ? '' : "[#{type}]")
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options[:id] = options[:name].gsub(/([\[\(])|(\]\[)/, '_').gsub(/[\]\)]/, '')
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end
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def leading_zero_on_single_digits(number)
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number > 9 ? number : "0#{number}"
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end
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end
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class InstanceTag #:nodoc:
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include DateHelper
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def to_date_select_tag(options = {})
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date_or_time_select options.merge(:discard_hour => true)
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end
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def to_time_select_tag(options = {})
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date_or_time_select options.merge(:discard_year => true, :discard_month => true)
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end
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def to_datetime_select_tag(options = {})
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date_or_time_select options
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end
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private
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def date_or_time_select(options)
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defaults = { :discard_type => true }
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options = defaults.merge(options)
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datetime = value(object)
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datetime ||= Time.now unless options[:include_blank]
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position = { :year => 1, :month => 2, :day => 3, :hour => 4, :minute => 5, :second => 6 }
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order = (options[:order] ||= [:year, :month, :day])
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# Discard explicit and implicit by not being included in the :order
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discard = {}
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discard[:year] = true if options[:discard_year] or !order.include?(:year)
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discard[:month] = true if options[:discard_month] or !order.include?(:month)
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discard[:day] = true if options[:discard_day] or discard[:month] or !order.include?(:day)
|
|
discard[:hour] = true if options[:discard_hour]
|
|
discard[:minute] = true if options[:discard_minute] or discard[:hour]
|
|
discard[:second] = true unless options[:include_seconds] && !discard[:minute]
|
|
|
|
# Maintain valid dates by including hidden fields for discarded elements
|
|
[:day, :month, :year].each { |o| order.unshift(o) unless order.include?(o) }
|
|
# Ensure proper ordering of :hour, :minute and :second
|
|
[:hour, :minute, :second].each { |o| order.delete(o); order.push(o) }
|
|
|
|
date_or_time_select = ''
|
|
order.reverse.each do |param|
|
|
# Send hidden fields for discarded elements once output has started
|
|
# This ensures AR can reconstruct valid dates using ParseDate
|
|
next if discard[param] && date_or_time_select.empty?
|
|
|
|
date_or_time_select.insert(0, self.send("select_#{param}", datetime, options_with_prefix(position[param], options.merge(:use_hidden => discard[param]))))
|
|
date_or_time_select.insert(0,
|
|
case param
|
|
when :hour then (discard[:year] && discard[:day] ? "" : " — ")
|
|
when :minute then " : "
|
|
when :second then options[:include_seconds] ? " : " : ""
|
|
else ""
|
|
end)
|
|
|
|
end
|
|
|
|
date_or_time_select
|
|
end
|
|
|
|
def options_with_prefix(position, options)
|
|
prefix = "#{@object_name}"
|
|
if options[:index]
|
|
prefix << "[#{options[:index]}]"
|
|
elsif @auto_index
|
|
prefix << "[#{@auto_index}]"
|
|
end
|
|
options.merge(:prefix => "#{prefix}[#{@method_name}(#{position}i)]")
|
|
end
|
|
end
|
|
|
|
class FormBuilder
|
|
def date_select(method, options = {})
|
|
@template.date_select(@object_name, method, options.merge(:object => @object))
|
|
end
|
|
|
|
def time_select(method, options = {})
|
|
@template.time_select(@object_name, method, options.merge(:object => @object))
|
|
end
|
|
|
|
def datetime_select(method, options = {})
|
|
@template.datetime_select(@object_name, method, options.merge(:object => @object))
|
|
end
|
|
end
|
|
end
|
|
end
|