Class: RailsAdmin::Support::Datetime

Inherits:
Object
  • Object
show all
Extended by:
I18n
Defined in:
lib/rails_admin/support/datetime.rb

Constant Summary collapse

MOMENTJS_TRANSLATIONS =

Ruby format options as a key and momentjs format options as a value

{
  '%a' => 'ddd',        # The abbreviated weekday name ("Sun")
  '%A' => 'dddd',       # The  full  weekday  name ("Sunday")
  '%b' => 'MMM',        # The abbreviated month name ("Jan")
  '%B' => 'MMMM',       # The  full  month  name ("January")
  '%d' => 'DD',         # Day of the month (01..31)
  '%-d' => 'D',         # Day of the month (1..31)
  '%D' => 'MM/DD/YY',   # American date format mm/dd/yy
  '%e' => 'D',          # Day of the month (1..31)
  '%F' => 'YY-MM-DD',   # ISO 8601 date format
  '%H' => 'HH',         # Hour of the day, 24-hour clock (00..23)
  '%I' => 'hh',         # Hour of the day, 12-hour clock (01..12)
  '%m' => 'MM',         # Month of the year (01..12)
  '%-m' => 'M',         # Month of the year (1..12)
  '%M' => 'mm',         # Minute of the hour (00..59)
  '%p' => 'A',          # Meridian indicator ('AM' or 'PM')
  '%S' => 'ss',         # Second of the minute (00..60)
  '%Y' => 'YYYY',       # Year with century
  '%y' => 'YY',         # Year without a century (00..99)
}.freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from I18n

abbr_day_names, abbr_month_names, date_format, day_names, month_names

Constructor Details

#initialize(strftime_format) ⇒ Datetime

Returns a new instance of Datetime.



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# File 'lib/rails_admin/support/datetime.rb', line 69

def initialize(strftime_format)
  @strftime_format = strftime_format
end

Instance Attribute Details

#strftime_format ⇒ Object (readonly)

Returns the value of attribute strftime_format.



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# File 'lib/rails_admin/support/datetime.rb', line 67

def strftime_format
  @strftime_format
end

Class Method Details

.delocalize(date_string, format) ⇒ Object 



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# File 'lib/rails_admin/support/datetime.rb', line 31

def delocalize(date_string, format)
  return date_string if ::I18n.locale.to_s == 'en'
  format.to_s.scan(/%[AaBbp]/) do |match|
    case match
    when '%A'
      english = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
      day_names.each_with_index { |d, i| date_string = date_string.gsub(/#{d}/, english[i]) }
    when '%a'
      english = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]
      abbr_day_names.each_with_index { |d, i| date_string = date_string.gsub(/#{d}/, english[i]) }
    when '%B'
      english = [nil, "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][1..-1]
      month_names.each_with_index { |m, i| date_string = date_string.gsub(/#{m}/, english[i]) }
    when '%b'
      english = [nil, "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"][1..-1]
      abbr_month_names.each_with_index { |m, i| date_string = date_string.gsub(/#{m}/, english[i]) }
    when '%p'
      date_string = date_string.gsub(/#{::I18n.t('date.time.am', default: "am")}/, 'am')
      date_string = date_string.gsub(/#{::I18n.t('date.time.pm', default: "pm")}/, 'pm')
    end
  end
  date_string
end

.normalize(date_string, format) ⇒ Object 



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# File 'lib/rails_admin/support/datetime.rb', line 55

def normalize(date_string, format)
  return unless date_string
  delocalize(date_string, format)
  parse_date_string(date_string)
end

.parse_date_string(date_string) ⇒ Object

Parse normalized date strings using time zone



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# File 'lib/rails_admin/support/datetime.rb', line 62

def parse_date_string(date_string)
  ::Time.zone.parse(date_string)
end

Instance Method Details

#delocalize(value) ⇒ Object

Delocalize a l10n datetime strings



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# File 'lib/rails_admin/support/datetime.rb', line 81

def delocalize(value)
  self.class.delocalize(value, strftime_format)
end

#parse_string(value) ⇒ Object 



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# File 'lib/rails_admin/support/datetime.rb', line 85

def parse_string(value)
  return if value.blank?
  return value if %w(DateTime Date Time).include?(value.class.name)
  return if (delocalized_value = delocalize(value)).blank?

  begin
    # Adjust with the correct timezone and daylight savint time
    datetime_with_wrong_tz = ::DateTime.strptime(delocalized_value, strftime_format.gsub('%-d', '%d'))
    Time.zone.parse(datetime_with_wrong_tz.strftime('%Y-%m-%d %H:%M:%S'))
  rescue ArgumentError
    nil
  end
end

#to_momentjs ⇒ Object

Ruby to javascript formatting options translator



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# File 'lib/rails_admin/support/datetime.rb', line 74

def to_momentjs
  strftime_format.gsub(/\w[^.(!?%)\W]{1,}/, '[\0]').gsub(/%(\w|\-\w)/) do |match|
    MOMENTJS_TRANSLATIONS[match]
  end
end