Question

I can see the the id inside the parameters in the log but i cant access it in the controller.Can any body please show me how else i could do?Apparently
@city=City.find(params[:cities][:city_id]) is not doing the job.Thank you

  <%= form_for :city, :url=>{:action =>"next"} do |f| %>
  <%= f.collection_select(:city_id, City.all, :id, :name ,:prompt=>"Select your city") %>

   <%=f.submit "continue" %>
   <%end%>

Home controller

       def next
       @city=City.find(params[:city_id]) 
       session[:city_id] = @city.id
       redirect_to :controller=>"parks",:action =>"show" 
       end

In the log

     Started POST "/home/next" for 127.0.0.1 at 2011-10-21 12:16:37 -0700
     Processing by ParkController#show as HTML
     Parameters: {"utf8"=>"✓",  "authenticity_token"=>"7VVJ9GHcU4miYLCkSt91S674GGTScor86Tcsz7O25ik=", "city_id"=>"2",  "commit"=>"continue"}
     Rendered park/show.html.erb within layouts/header (2.5ms)
     Completed 500 Internal Server Error in 7ms

Answer 1

Awww damn Im an idiot didnt see it in the beginning. You wrote

@city=City.find(params[:cities]) 

But it should be

@city=City.find(params[:city_id])