25 lines
1.1 KiB
Ruby
25 lines
1.1 KiB
Ruby
#
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# Copyright (C) 2020 - 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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module MigrationHelpers::AddColumnAndFk
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def add_column_and_fk(table_name, column_name, foreign_table_name, if_not_exists: false)
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fk = connection.send(:foreign_key_name, table_name, :column => column_name)
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return if if_not_exists && connection.column_exists?(table_name, column_name)
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execute("ALTER TABLE #{connection.quote_table_name(table_name)} ADD COLUMN #{column_name} bigint CONSTRAINT #{fk} REFERENCES #{connection.quote_table_name(foreign_table_name)}(id)")
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end
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end
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