[rails} Get Lookup Table :vehicle_id from params[:mileage]

[skeeterbug]

okay, i'm not even sure if my title makes sense, but here's what i'm trying to do.

list is still controlled by :scaffold so i have no access to update the list action as of now.

i need to extract information from two tables in order to display show.rhtml.

do i need to code the list action before i can do this? i tried...

  def show
    @mileage = Mileage.find(@params["id"])
    @mileage_vehicle = Vehicle.find(@params["vehicle_id"])
    render_text @mileage_vehicle.name
  end

...but i received the following error:

"Couldn't find Vehicle without an ID"

i also tried...

  def show
    @mileage = Mileage.find(@params["id"])
    @mileage_vehicle = Vehicle.find(@params["@mileage.vehicle_id"])
    render_text @mileage_vehicle.name
  end

...with the same error message.

is there any way to get the vehicle_id from the scaffold list page or do i need to hand code the page before i can get access to it? i think i have to code the list page, but i'd like to avoid it at this point. i think you have to define what you send in the form tag and scaffolding doesn't send :vehicle_id (but does send :id).

tia...

tia...

[wtf242]

It's kind of hard to figure out what you're trying to do, but typically the form variables are going to look like this:

params[:mileage][:vehicle_id]