pass parameter by link_to ruby on rails

Question

Hi

I have this line of code:

<%= link_to "Add to cart", :controller => "car", :action => "add_to_cart", :car => car %>

when im in the add_to_cart method...how can i call the :car please?

@car = Car.new(params[:car])

doesnt work because it says im trying to stringify

I dont understand whats wrong because I used this to create new users and it worked fine.

By the way, car is my car object.

thnx

Answer 1

You probably don't want to pass the car object as a parameter, try just passing car.id. What do you get when you inspect(params) after clicking "Add to cart"?

Answer 2

Maybe try this:

<%= link_to "Add to cart", 
            :controller => "car", 
            :action => "add_to_cart", 
            :car => car.attributes %>

But I'd really like to see where the car object is getting setup for this page (i.e., the rest of the view).