13 lines
374 B
Ruby
13 lines
374 B
Ruby
class CreateSDGRelations < ActiveRecord::Migration[5.2]
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def change
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create_table :sdg_relations do |t|
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t.references :related_sdg, polymorphic: true
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t.references :relatable, polymorphic: true
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t.index [:related_sdg_id, :related_sdg_type, :relatable_id, :relatable_type], name: "sdg_relations_unique", unique: true
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t.timestamps
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end
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end
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end
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