15 lines
353 B
Ruby
15 lines
353 B
Ruby
class CreateRelationships < ActiveRecord::Migration[4.2]
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def change
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create_table :relationships do |t|
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t.integer :source_id
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t.integer :target_id
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t.timestamps
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end
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add_index :relationships, :source_id
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add_index :relationships, :target_id
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add_index :relationships, [:source_id, :target_id], unique: true
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end
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end
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