Ruby on Rails 4 - simple_form multiple select input

Question

I have a simple_form input field that looks like this:

<%= f.input :particular_users, collection: @all_users, input_html: { class: \'multiselectuser\', mu         


        

Answer 1

It actually does work the way I wanted it to. The trick is to tell the strong parameters to allow a hash. It doesn't throw a strong parameters error, the param just gets thrown out and doesn't come through. So I set it to for example: params.require(:survey).permit(:particular_users => []).