41 lines
1.4 KiB
Ruby
41 lines
1.4 KiB
Ruby
# frozen_string_literal: true
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#
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# Copyright (C) 2021 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class AddAnnotatableAttachmentIdToAssignments < ActiveRecord::Migration[5.2]
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tag :predeploy # this migration will run before new app code is deployed
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disable_ddl_transaction! # don't lock db, don't use transaction
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def change
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add_reference :assignments,
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:annotatable_attachment,
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type: :bigint,
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foreign_key: {
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to_table: :attachments
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},
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index: false,
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if_not_exists: true
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add_index :assignments,
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:annotatable_attachment_id,
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where: "annotatable_attachment_id IS NOT NULL",
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algorithm: :concurrently,
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if_not_exists: true
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end
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end
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