37 lines
1.4 KiB
Ruby
37 lines
1.4 KiB
Ruby
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#
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# Copyright (C) 2019 - 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 AddDefaultSectionsUniqueIndex < ActiveRecord::Migration[5.1]
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disable_ddl_transaction!
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tag :postdeploy
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def up
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course_ids_to_fix = CourseSection.active.group(:course_id).where(:default_section => true).
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having("COUNT(*) > 1").pluck(:course_id)
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course_ids_to_fix.each do |course_id|
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CourseSection.where(:course_id => course_id, :default_section => true).
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order(:id).offset(1).update_all(:default_section => false)
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end
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add_index :course_sections, :course_id, :unique => true, :where => "default_section = 't' AND workflow_state <> 'deleted'",
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:name => "index_course_sections_unique_default_section"
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end
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def down
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remove_index :course_sections, :name => "index_course_sections_unique_default_section"
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end
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end
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