Module: ActiveRecordSimpledbAdapter::Defaults

Defined in:
lib/active_record/connection_adapters/simpledb_adapter/defaults.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/active_record/connection_adapters/simpledb_adapter/defaults.rb', line 3

def self.included(base)
  base.send :alias_method_chain, :initialize, :defaults
end

Instance Method Details

#initialize_with_defaults(attrs = nil) ⇒ Object 



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# File 'lib/active_record/connection_adapters/simpledb_adapter/defaults.rb', line 7

def initialize_with_defaults(attrs = nil)
  initialize_without_defaults(attrs) do
    safe_attribute_names = []
    if attrs
      stringified_attrs = attrs.stringify_keys
      safe_attrs =  sanitize_for_mass_assignment(stringified_attrs)
      safe_attribute_names = safe_attrs.keys.map { |x| x.to_s }
    end

    ActiveRecord::Base.connection.columns_definition(self.class.table_name).columns_with_defaults.each do |column|
      has_default = !safe_attribute_names.any? { |attr_name| 
        attr_name =~ /^#{column.name}($|\()/ 
      }

      if has_default
        value = if column.default.is_a? Proc
                  column.default.call
                else
                  column.default
                end
        __send__("#{column.name}=", value)
        changed_attributes.delete(column.name)
      end
    end
    yield(self) if block_given?
  end
end