rails keep all params except for some

def filtered_params
  params.except(:param1, :param2, :param3)
end

Explanation: 1. Define a method named filtered_params to encapsulate the logic for keeping all parameters except for some. 2. Use the params method, which represents the parameters received in a Rails controller action. 3. Call the except method on params to exclude specific parameters from the hash. In this example, :param1, :param2, and :param3 are excluded, and the remaining parameters are retained. 4. The method returns the filtered parameters hash.