32 lines
1.2 KiB
Ruby
32 lines
1.2 KiB
Ruby
#
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# Copyright (C) 2012 - 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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class SetDiscussionEntryRootIds < ActiveRecord::Migration[4.2]
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tag :postdeploy
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def self.up
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# fix up parent_id, which was getting set to 0 for root-level entries
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# also set root_entry_id to parent_id for all existing entries
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DiscussionEntry.update_all("parent_id = CASE parent_id WHEN 0 THEN NULL ELSE parent_id END, root_entry_id = CASE parent_id WHEN 0 THEN NULL ELSE parent_id END")
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end
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def self.down
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DiscussionEntry.where(:parent_id => nil).update_all(:parent_id => 0)
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# previous migration drops the root_entry_id column here
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end
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end
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