13 lines
392 B
Ruby
13 lines
392 B
Ruby
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class CreateRelatedCategories < ActiveRecord::Migration[6.1]
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def change
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create_table :related_categories do |t|
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t.bigint :category_id
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t.bigint :related_category_id
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t.timestamps
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end
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add_index :related_categories, [:category_id, :related_category_id], unique: true
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add_index :related_categories, [:related_category_id, :category_id], unique: true
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end
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end
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