19 lines
		
	
	
		
			477 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			19 lines
		
	
	
		
			477 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| require Rails.root.join('lib', 'mastodon', 'migration_helpers')
 | |
| 
 | |
| class AddEmbedUrlToPreviewCards < ActiveRecord::Migration[5.1]
 | |
|   include Mastodon::MigrationHelpers
 | |
| 
 | |
|   disable_ddl_transaction!
 | |
| 
 | |
|   def up
 | |
|     safety_assured do
 | |
|       add_column_with_default :preview_cards, :embed_url, :string, default: '', allow_null: false
 | |
|     end
 | |
|   end
 | |
| 
 | |
|   def down
 | |
|     execute "UPDATE preview_cards SET url=embed_url WHERE embed_url!=''"
 | |
|     remove_column :preview_cards, :embed_url
 | |
|   end
 | |
| end
 |