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