How do I add some inserts in rails migration?

Question

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

thanks

Answer 1

create a new migration file like 047_add_rows_in_system_settings.rb

 class AddRowsInAddSystemSettings < ActiveRecord::Migration
        def self.up
          SystemSetting.create{:name => "name1", :label => "Use notice?", :value => 1}
          SystemSetting.create{:name => "name2", :label => "Use notice?", :value => 2}
         end

        def self.down
          SystemSetting.delete_all
        end
      end

OR

while creating table

046_system_settings.rb

class AddSystemSettings < ActiveRecord::Migration
    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

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

    def self.down
      drop_table :system_settings
    end
  end

Ref:- http://api.rubyonrails.org/classes/ActiveRecord/Migration.html