Class: Caboose::ModelBinder

Inherits:
Object
  • Object
show all
Defined in:
app/models/caboose/model_binder.rb

Class Method Summary collapse

Class Method Details

.local_datetime_to_utc(str, zone) ⇒ Object

Given a local date and time string (iso8601 format) and the local timezone, return a datetime object in the UTC zone.



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# File 'app/models/caboose/model_binder.rb', line 21

def self.local_datetime_to_utc(str, zone)
                  
  return false if str.nil? || zone.nil?
  
  # Split into date and time
  arr = str.split('T')      
  arr = str.split(' ') if arr.count == 1      
  return false if arr.count == 1
  
  # Split up the date into its components
  date_string = arr.shift
  d = date_string.split('-')
  d = date_string.split('/') if d.count == 1      
  return false if d.count != 3
  d = [d[2], d[0], d[1]] if date_string.include?('/')
  
  # Split up the time into its components
  time_string = arr.join(' ')
  time_string = ModelBinder.military_time(time_string)
  t = time_string.split(':')
  return false if t.count != 2 && t.count != 3
  
  # Convert timezones
  old_timezone = Time.zone
  Time.zone = zone                    
  local_d = Time.zone.local(d[0].to_i, d[1].to_i, d[2].to_i, t[0].to_i, t[1].to_i, (t.count > 2 ? t[2].to_i : 0)).to_datetime.utc
  Time.zone = old_timezone
  
  return local_d
end

.military_time(str) ⇒ Object

Converts a 12-hour time string to a 24-hour time string.

Example: 3:37 pm -> 15:37



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# File 'app/models/caboose/model_binder.rb', line 7

def self.military_time(str)
  return false if str.nil? || str.length == 0
  arr = str.split(' ')
  return str if arr.length == 1
  hm = arr[0]
  ampm = arr[1].downcase
  return hm if ampm == 'am'
  arr2 = hm.split(':')
  arr2[0] = (arr2[0].to_i + 12).to_s
  return arr2.join(':')
end

.update_date(d, value, timezone) ⇒ Object 



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# File 'app/models/caboose/model_binder.rb', line 52

def self.update_date(d, value, timezone)                      
  t = d ? d.in_time_zone(timezone).strftime('%H:%M') : '10:00'            
  return ModelBinder.local_datetime_to_utc("#{value} #{t}", timezone)
end

.update_time(d, value, timezone) ⇒ Object 



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# File 'app/models/caboose/model_binder.rb', line 57

def self.update_time(d, value, timezone)                        
  d2 = d ? d.in_time_zone(timezone).strftime('%Y-%m-%d') : DateTime.now.strftime('%Y-%m-%d')
  return ModelBinder.local_datetime_to_utc("#{d2} #{value}", timezone)
end