0fc9f9d3e7
DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912
19 lines
492 B
Ruby
19 lines
492 B
Ruby
# rubocop:disable all
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class CreateSubscriptionsTable < ActiveRecord::Migration[4.2]
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DOWNTIME = false
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def change
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create_table :subscriptions do |t|
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t.integer :user_id
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t.references :subscribable, polymorphic: true
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t.boolean :subscribed
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t.timestamps null: true
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end
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add_index :subscriptions,
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[:subscribable_id, :subscribable_type, :user_id],
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unique: true,
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name: 'subscriptions_user_id_and_ref_fields'
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end
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end
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