问题
Is it possible to use strong parameters to ensure that an attribute will be filtered with a whitelist of possible values?
For example, I have a parameter age that I want to ensure that can only have this values [10,20,30,40,50]. Is it possible to use the strong parameters logic to ensure that?
Thanks
回答1:
Quick answer
No! Strong parameters only let you to filter keys from a hash regardless of the value they have.
Long answer
No! But as it was pointed out in comments, your best solution is to use validations:
class MyModel < ActiveRecord::Base
validates :value, inclusion: { in: [1,2,3] }
end
来源:https://stackoverflow.com/questions/28541432/value-whitelist-using-strong-parameters-in-rails-4