33 lines
785 B
Ruby
33 lines
785 B
Ruby
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class AddGroupToTodos < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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def up
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add_column :todos, :group_id, :integer
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add_concurrent_foreign_key :todos, :namespaces, column: :group_id, on_delete: :cascade
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add_concurrent_index :todos, :group_id
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change_column_null :todos, :project_id, true
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end
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def down
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return unless group_id_exists?
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remove_foreign_key :todos, column: :group_id
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remove_index :todos, :group_id if index_exists?(:todos, :group_id)
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remove_column :todos, :group_id
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execute "DELETE FROM todos WHERE project_id IS NULL"
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change_column_null :todos, :project_id, false
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end
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private
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def group_id_exists?
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column_exists?(:todos, :group_id)
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end
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end
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