Question

运行迁移时出现以下错误。

我使用的是ruby 1.8.6版本。我们开发了插件，使ruby代码与Teradata兼容。此迁移与在后端创建Teradata表有关。

我的迁移文件：

    class CreateObbPacDetails < ActiveRecord::Migration
  def self.up
    down
    DataWarehouse::PromotionsTradeData::ObbPacDetails.instance.create_table
  end

  def self.down
    DataWarehouse::PromotionsTradeData::ObbPacDetails.instance.drop_table
  end
end

我的模特：

class DataWarehouse::PromotionsTradeData::ObbPacDetails < DataWarehouse::Table::Base
  has_nickname :obb_pac_details
  is_permanent_table

  has_fields :forecast_date       => "date format 'yyyy-mm-dd'",
             :areacode            => "byteint not null",
             :bpr_regn            => "char(2) not null",
             :base_product_number => "integer not null",
             :offer_start_date    => "date format 'yyyy-mm-dd' not null",
             :offer_id            => "char(9) not null",
             :offer_end_date      => "date format 'yyyy-mm-dd' not null",
             :bpr_uplift_perc     => "byteint not null"

  has_primary_key [:areacode, :bpr_regn, :base_product_number, :offer_start_date]

  collect_stats_on :areacode
  collect_stats_on :bpr_regn
  collect_stats_on :base_product_number
  collect_stats_on :offer_start_date  
  collect_stats_on [:forecast_date, :base_product_number]

错误代码：

rake db:migrate VERSION=20140328000102 --trace
(in /data/bpf/rails_dev/RB-5.2-exp)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
wrong number of arguments (1 for 2)
/data/bpf/rails_dev/RB-5.2-exp/app/models/data_warehouse/promotions_trade_data/obb_pac_details.rb:29:in `has_insert_statement'
/data/bpf/rails_dev/RB-5.2-exp/app/models/data_warehouse/promotions_trade_data/obb_pac_details.rb:29
/appl/apache/dev/development/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/appl/apache/dev/development/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/data/bpf/rails_dev/RB-5.2-exp/vendor/rails/activesupport/lib/active_support/dependencies.rb:509:in `require'
/data/bpf/rails_dev/RB-5.2-exp/vendor/rails/activesupport/lib/active_support/dependencies.rb:354:in `new_constants_in'
/data/bpf/rails_dev/RB-5.2-exp/vendor/rails/activesupport/lib/active_support/dependencies.rb:509:in `require'
/data/bpf/rails_dev/RB-5.2-exp/vendor/gems/require_all-1.1.0/lib/require_all.rb:81:in `require_all'
/data/bpf/rails_dev/RB-5.2-exp/vendor/gems/require_all-1.1.0/lib/require_all.rb:79:in `each'
/data/bpf/rails_dev/RB-5.2-exp/vendor/gems/require_all-1.1.0/lib/require_all.rb:79:in `require_all'
/data/bpf/rails_dev/RB-5.2-exp/vendor/gems/require_all-1.1.0/lib/require_all.rb:121:in `require_rel'

Answer 1

在迁移过程中，您没有在DataWarehouse::PromotionsTradeData::ObbPacDetails.instance.create_table之后为迁移提供表名。

据我所知，create_table expects表名作为必需参数。

另外，我假设down中的def self.up是拼写错误。

rake中止错误的参数数量

1 个答案: