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19 lines
550 B
Ruby
19 lines
550 B
Ruby
# frozen_string_literal: true
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class CreateExpressions < ActiveRecord::Migration[4.2]
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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 null: false
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end
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add_index :expressions,
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%i[parent_id parent_type expression_type_id user_id],
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unique: true,
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name: "expressions_pk"
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end
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end
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