forked from treehouse/mastodon
31 lines
1.5 KiB
Ruby
31 lines
1.5 KiB
Ruby
require Rails.root.join('lib', 'mastodon', 'migration_helpers')
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class AddFixedLowercaseIndexToAccounts < ActiveRecord::Migration[5.2]
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include Mastodon::MigrationHelpers
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disable_ddl_transaction!
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def up
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if index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower') && index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower')
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remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
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elsif index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower')
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rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower'
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end
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begin
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add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
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rescue ActiveRecord::RecordNotUnique
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remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
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raise CorruptionError
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end
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remove_index :accounts, name: 'old_index_accounts_on_username_and_domain_lower' if index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower')
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end
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def down
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add_index :accounts, 'lower (username), lower(domain)', name: 'old_index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
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remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
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rename_index :accounts, 'old_index_accounts_on_username_and_domain_lower', 'index_accounts_on_username_and_domain_lower'
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end
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end
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