Ruby on rails 在RubyonRails中保存模型后如何回滚？

我使用RubyonRails3.2编写了这段代码

def craete
  @account = Account.new(account_params)
    if @account.save
      @account = Account.where(name: params[:name]).first
      @tenant = Tenant.new()
      @tenant.name = @account.name
      @tenant.account_id = @account.id          
      if !@tenant.save
        raise ApiError.new(ApiError::VALIDATION, @tenant.errors, 1103, :unprocessable_entity)
      end
      audit('Admin.Account.Create', account_params)
      @success = ApiSuccess.new(@account, 1210, request.method, false, 'Account created')
      render '/api_success', status: :created
    else
      raise ApiError.new(ApiError::VALIDATION, @account.errors, 1103, :unprocessable_entity)
    end
end

我的问题是，如果租户无法保存，我们如何回滚帐户

非常感谢您使用此功能。在事务块下保存帐户和租户。如果其中任何一个失败，整个事务将回滚

@account.transaction do 
  if @account.save
   @account = Account.where(name: params[:name]).first
   @tenant = Tenant.new()
   @tenant.name = @account.name
   @tenant.account_id = @account.id          
   if !@tenant.save
     raise ApiError.new(ApiError::VALIDATION, @tenant.errors, 1103, :unprocessable_entity)
   end
   audit('Admin.Account.Create', account_params)
   success = ApiSuccess.new(@account, 1210, request.method, false, 'Account created')
   render '/api_success', status: :created
 else
  raise ApiError.new(ApiError::VALIDATION, @account.errors, 1103, :unprocessable_entity)
 end

结束

{“social.audit”：{“auditable_type”：“Admin.Account.Create”，“customer_id”：1，“audited_changes”：{“name”：“test”，“email”：test@yahoo.com“}”，created_at:“2014-07-26T18:26:29+07:00”，“action:“Admin.Account.Create”}已返回！回复\代码=312，回复\文本=NO\路由，无法保存事件I输入的正确数据？