13 lines
402 B
Ruby
13 lines
402 B
Ruby
class CreateChipValues < ActiveRecord::Migration[5.2]
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def change
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create_table :chip_values do |t|
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t.references :base_chip, foreign_key: { to_table: :chips }
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t.references :secondary_chip, foreign_key: { to_table: :chips }
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t.decimal :value, precision: 12, scale: 3, null: false
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t.timestamps
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t.index [:base_chip_id, :secondary_chip_id], unique: true
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end
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end
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end
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