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ActiveRecord::AttributeMethods::TimeZoneConversion::ClassMethods

Protected Instance Methods

attribute_cast_code(attr_name) click to toggle source

The enhanced read method automatically converts the UTC time stored in the database to the time zone stored in Time.zone.

# File lib/active_record/attribute_methods/time_zone_conversion.rb, line 21
def attribute_cast_code(attr_name)
  column = columns_hash[attr_name]

  if create_time_zone_conversion_attribute?(attr_name, column)
    typecast             = "v = #{super}"
    time_zone_conversion = "v.acts_like?(:time) ? v.in_time_zone : v"

    "((#{typecast}) && (#{time_zone_conversion}))"
  else
    super
  end
end
define_method_attribute=(attr_name) click to toggle source

Defined for all datetime and timestamp attributes when time_zone_aware_attributes are enabled. This enhanced write method will automatically convert the time passed to it to the zone stored in Time.zone.

# File lib/active_record/attribute_methods/time_zone_conversion.rb, line 36
def define_method_attribute=(attr_name)
  if create_time_zone_conversion_attribute?(attr_name, columns_hash[attr_name])
    method_body, line =                 def #{attr_name}=(original_time)                  time = original_time                  unless time.acts_like?(:time)                    time = time.is_a?(String) ? Time.zone.parse(time) : time.to_time rescue time                  end                  time = time.in_time_zone rescue nil if time                  changed = read_attribute(:#{attr_name}) != time                  write_attribute(:#{attr_name}, original_time)                  #{attr_name}_will_change! if changed                  @attributes_cache["#{attr_name}"] = time                end, __LINE__ + 1
    generated_attribute_methods.module_eval(method_body, __FILE__, line)
  else
    super
  end
end

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