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
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
# 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
Disabled; run with --debug to generate this.
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