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class CreateImportedStatuses < ActiveRecord::Migration[5.2]
def up
create_table :imported_statuses do |t|
t.references :status, null: false, foreign_key: {on_delete: :cascade}, index: {unique: true}
t.string :origin, index: {unique: true}
end
safety_assured { execute 'INSERT INTO imported_statuses (status_id, origin) SELECT id, origin FROM statuses WHERE imported' }
safety_assured do
remove_column :statuses, :imported
remove_column :statuses, :origin
end
end
def down
add_column :statuses, :imported, :boolean
add_column :statuses, :origin, :string, index: { unique: true }
execute 'UPDATE statuses SET imported = true, origin = s.origin FROM (SELECT status_id, origin FROM imported_statuses) AS s WHERE statuses.id = s.id'
drop_table :imported_statuses
end
end
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