Array of possible values for a key.

[gotjosh]

Is it possible to pass an Array of values for a given key? I'm wondering if this should be something within the scope of strong params or if it belongs outside of this.

Something like

params.require(:user).permit(:name, role: ["editor", "reader"], :bio)

[ka8725]

Of course it's possible but you pass params in the wrong order. The right order should be :name, :bio, role: ["editor", "reader"]

[gotjosh]

Thank You! I have submitted a pull request. To document such feature. It's Issue #169.

[jhephs]

Is this still working? Tried it just recently with Rails 4.1 and it seems not to be working anymore. :(

[doits]

Stumbled across this too. Tested with Rails 4.2.0.beta2 and this does not work?

ActionController::Parameters.new({:bla => 'blub'}).permit(:bla => ['blub'])
=> {"bla"=>nil}

As this use case is not documented, it might be reasonable this does not work. But this might be a nice feature to implement, then :-)

[amngibson]

Did this ever get resolved in rails 4? Looking to filter role values on signup with devise and this looked like the only solution.

[greyvugrin]

@gotjosh found this because I was following a similar approach. If you're going to use those params to create a user it seems like doing the validation in the model is the way to go:

http://stackoverflow.com/questions/16818117/rails-where-to-add-validation-code-controller-or-model