13 lines
685 B
Ruby
13 lines
685 B
Ruby
class CreateRelatedContent < ActiveRecord::Migration
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def change
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create_table :related_contents do |t|
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t.references :parent_relationable, polymorphic: true, index: { name: 'index_related_contents_on_parent_relationable' }
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t.references :child_relationable, polymorphic: true, index: { name: 'index_related_contents_on_child_relationable' }
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t.references :related_content, index: { name: 'opposite_related_content' }
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t.timestamps
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end
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add_index :related_contents, [:parent_relationable_id, :parent_relationable_type, :child_relationable_id, :child_relationable_type], name: "unique_parent_child_related_content", unique: true, using: :btree
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end
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end
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