18 lines
500 B
Ruby
18 lines
500 B
Ruby
class CommentAnything < ActiveRecord::Migration
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def self.up
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remove_foreign_key :comments, :posts
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remove_index :comments, :post_id
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change_table :comments do |t|
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t.rename :post_id, :commentable_id
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t.string :commentable_type, :default => 'Post', :null => false
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end
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end
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def self.down
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rename_column :comments, :commentable_id, :post_id
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add_foreign_key :comments, :posts
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add_index :comments, :post_id
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remove_column :comments, :commentable_type
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end
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end
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