Updates the attribute identified by attr_name with the specified value. Empty strings for fixnum and float columns are turned into nil.
# File lib/active_record/attribute_methods/write.rb, line 19 def write_attribute(attr_name, value) attr_name = attr_name.to_s attr_name = self.class.primary_key if attr_name == 'id' @attributes_cache.delete(attr_name) if (column = column_for_attribute(attr_name)) && column.number? @attributes[attr_name] = convert_number_column_value(value) else @attributes[attr_name] = value end end
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