Some Mastodon versions (v1.1 and v1.2) had a duplicate index in `db/schema.rb` without any migration script creating it. #2224 (included in v1.3) removed the duplicate index from the file but did not provide a migration script to remove it. This means that any instance that was installed from v1.1 or v1.2's source code has a duplicate index and a corresponding warning in PgHero. Instances set up using an earlier or later Mastodon version do not have this issue. This PR removes the duplicate index if it is present.
		
			
				
	
	
		
			9 lines
		
	
	
	
		
			329 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			9 lines
		
	
	
	
		
			329 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
class RemoveMentionsStatusIdIndex < ActiveRecord::Migration[6.1]
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  def up
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    remove_index :mentions, name: :mentions_status_id_index if index_exists?(:mentions, :status_id, name: :mentions_status_id_index)
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  end
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  def down
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    # As this index should not exist and is a duplicate of another index, do not re-create it
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  end
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end
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