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- class CreateMarkers < ActiveRecord::Migration[5.2]
- def change
- create_table :markers do |t|
- t.references :user, foreign_key: { on_delete: :cascade, index: false }
- t.string :timeline, default: '', null: false
- t.bigint :last_read_id, default: 0, null: false
- t.integer :lock_version, default: 0, null: false
- t.timestamps
- end
- add_index :markers, [:user_id, :timeline], unique: true
- end
- end
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