CODEWITHSUNDEEP
ruby-on-rails
Peter R
Peter R

Reputation: 3516

How can I access Unpermitted Parameters?

Lets say I have the code

params.require(:foo).permit(:a, :b, :c)

and the params came in as 

params: {:foo => {a: 0, b: 1, c: 2, d: 3}}

I would get

unpermitted paramter: d

How can I access unpermitted parameters in the controller, or see if any were passed by the user?

Upvotes: 2

Views: 334

Answers (1)

fylooi
fylooi

Reputation: 3870

Looking at the source of ActionController::Parameters:

You'll need to set this (in an initializer or otherwise): ActionController::Parameters.action_on_unpermitted_parameters = :raise

This will raise a new ActionController::UnpermittedParameters exception which you can intercept and extract the unpermitted parameters.

Upvotes: 3

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