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14 lines
465 B
Ruby
14 lines
465 B
Ruby
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class CreateExpressions < ActiveRecord::Migration
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def change
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create_table :expressions, id: false, force: true do |t|
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t.integer :parent_id, null: false
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t.string :parent_type, null: false, limit: 50
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t.integer :expression_type_id, null: false
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t.integer :user_id, null: false
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t.timestamps
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end
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add_index :expressions, [:parent_id, :parent_type, :expression_type_id, :user_id], unique: true, name: "expressions_pk"
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end
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end
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