29 lines
700 B
Ruby
29 lines
700 B
Ruby
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class AddForeignKeyToMergeRequests < ActiveRecord::Migration
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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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def up
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unless foreign_key_exists?(:merge_requests, :head_pipeline_id)
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add_concurrent_foreign_key(:merge_requests, :ci_pipelines,
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column: :head_pipeline_id, on_delete: :nullify)
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end
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end
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def down
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if foreign_key_exists?(:merge_requests, :head_pipeline_id)
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remove_foreign_key(:merge_requests, column: :head_pipeline_id)
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end
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end
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private
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def foreign_key_exists?(table, column)
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foreign_keys(table).any? do |key|
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key.options[:column] == column.to_s
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end
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end
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end
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