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metu.life/db/migrate/20170520145338_change_langu...

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class ChangeLanguageFilterToOptOut < ActiveRecord::Migration[5.0]
def change
remove_index :users, :allowed_languages
remove_column :users, :allowed_languages
add_column :users, :filtered_languages, :string, array: true, default: [], null: false
add_index :users, :filtered_languages, using: :gin
end
end