如何在Rails迁移中添加一些插入? [英] How do I add some inserts in rails migration?

问题描述

创建表(通过迁移)后，我想直接插入一些条目.我该如何为此编写迁移?

After creating a table (by migration), I want to insert some entries directly. How must I write a migration for this?

谢谢

推荐答案

更新: 这是正确的答案: https://stackoverflow.com/a/2667747/7852

Update: This is the right answer: https://stackoverflow.com/a/2667747/7852

以下是红宝石api上的示例:

 class AddSystemSettings < ActiveRecord::Migration
    # create the table
    def self.up
      create_table :system_settings do |t|
        t.string  :name
        t.string  :label
        t.text  :value
        t.string  :type
        t.integer  :position
      end

      # populate the table
      SystemSetting.create :name => "notice", :label => "Use notice?", :value => 1
    end

    def self.down
      drop_table :system_settings
    end
  end

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