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DiveInto/add index.rb

Created March 26, 2012 14:39
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how to add index using rails migration
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add index.rb
class AddIndexToFavourites < ActiveRecord::Migration
def self.up
add_index :favourites,[:user_id,:sell_info_id],:unique => true
end
def self.down
remove_index :favourites,[:user_id,:sell_info_id]
end
end
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