37 lines
902 B
Ruby
37 lines
902 B
Ruby
class AddGroupToTodos < ActiveRecord::Migration[4.2]
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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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class Todo < ActiveRecord::Base
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self.table_name = 'todos'
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include ::EachBatch
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end
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def up
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add_column(:todos, :group_id, :integer) unless group_id_exists?
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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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remove_foreign_key_without_error(:todos, column: :group_id)
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remove_concurrent_index(:todos, :group_id)
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remove_column(:todos, :group_id) if group_id_exists?
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Todo.where(project_id: nil).each_batch { |batch| batch.delete_all }
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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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