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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
21:           def attribute_cast_code(attr_name)
22:             column = columns_hash[attr_name]
23: 
24:             if create_time_zone_conversion_attribute?(attr_name, column)
25:               typecast             = "v = #{super}"
26:               time_zone_conversion = "v.acts_like?(:time) ? v.in_time_zone : v"
27: 
28:               "((#{typecast}) && (#{time_zone_conversion}))"
29:             else
30:               super
31:             end
32:           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
36:           def define_method_attribute=(attr_name)
37:             if create_time_zone_conversion_attribute?(attr_name, columns_hash[attr_name])
38:               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                  zoned_time   = time && time.in_time_zone rescue nil                  rounded_time = round_usec(zoned_time)                  rounded_value = round_usec(read_attribute("#{attr_name}"))                  if (rounded_value != rounded_time) || (!rounded_value && original_time)                    write_attribute("#{attr_name}", original_time)                    #{attr_name}_will_change!                    @attributes_cache["#{attr_name}"] = zoned_time                  end                end, __LINE__ + 1
39:               generated_attribute_methods.module_eval(method_body, __FILE__, line)
40:             else
41:               super
42:             end
43:           end

Private Instance Methods

create_time_zone_conversion_attribute?(name, column) click to toggle source
    # File lib/active_record/attribute_methods/time_zone_conversion.rb, line 61
61:           def create_time_zone_conversion_attribute?(name, column)
62:             time_zone_aware_attributes && !self.skip_time_zone_conversion_for_attributes.include?(name.to_sym) && column.type.in?([:datetime, :timestamp])
63:           end

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