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class RemoveDuplicateTaxableTaxonomies < ActiveRecord::Migration[4.2]
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def up
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remove_index :taxable_taxonomies, :name => 'taxable_index'
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add_index :taxable_taxonomies, [:taxable_id, :taxable_type, :taxonomy_id], :name => 'taxable_index', :unique => true
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end
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def down
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remove_index :taxable_taxonomies, :name => 'taxable_index'
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add_index :taxable_taxonomies, [:taxable_id, :taxable_type, :taxonomy_id], :name => 'taxable_index'
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end
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end
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