Question

I made a drop down list using collection_select

<%= collection_select(:page, :user_id, @users, :id, :full_name) %>

that part works fine. I am having trouble on saving it/processing it using the controller, the APIdock isn’t very helpful on that part and I haven’t been able to get the one example I found to work. Can anyone explain to me how I can process the selected value in the controller?

Answer 1

You will have a value

params[:page][:user_id]

which will correspond to the value selected in the form. You can see it inspecting the params variable.

IT is a number, the ID of the selected user. You could load the user by

@user = User.find(params[:page][:user_id])

but it’s useless. In fact, if the user_id property of the page is accessible, then with the usual

@page.update_attributes(params[:page]) # in the update action

or

@page.create(params[:page]) # in the create action

you will get the user in the page as @page.user.