Many of you probably know the 'depot' app from the 'Agile Rails development' book. When the view changes from 'Store' to 'display_cart,' a session containing the shopping-cart (:cart) is supposed maintain the 'cart' between calls, but when the display_cart stub view shows up, I have always ZERO elements in the cart! I have received valuable help already, but the issue seems less understandable than I thought at first. Here's a resumen: I have constructed the 'products' model, the Store-controller, and the 'Cart' and 'Line Item' classes. I have told Application-controller about :cart and :line_item: model :cart model :line_item Here's part of the Store_controller: def add_to_cart product = Product.find(params[:id]) @cart = find_cart @cart.add_product(product) #1# breakpoint "hallo" redirect_to(:action => 'display_cart') end def display_cart @cart = find_cart @items = @cart.items end private def find_cart session[:cart] ||= Cart.new end #1# At this breakpoint I can verify that the cart contains the correct product, and the session is ok. Then the view changes to the test-stub 'display_cart,' which looks like this: <h1>Display Cart</h1> <p> Your cart contains <%= @items.size %> items. </p> Every time, no matter how many times I back up and add products, the @items.size evaluates to ZERO. So the session and the cart get lost. Both my browsers have cookies enabled, but in the cookie-list, I can't find any cookie which associates to this application (under WEBrick). Any suggestions? (New msg:) I did some more breakpointing in the 'display_cart' method: def display_cart # 1 # breakpoint "hello" @cart = find_cart @items = @cart.items # 2 # breakpoint "hello" end At the second #2# breakpoint, there was an empty session, but that was of course created by the 'find_cart' call. At the first #1# breakpoint, the session was in fact nil. When I set <%=session.session_id%> in the views, it is always exactly the same in the 'store' view, (but changes every time in the 'display_cart' view). And the _session_id COOKIE never appears in Firefox cookie-list. From this, it seems the server (WEBrick) doesn't send the session cookie to the browser. (New msg:) Yeah, now I use 'Live HTTP Headers,' and it shows that WEBrick never sends the cookie to Firefox from my application. All other web-sites send cookies to their heart's delight, I can see that directly in the 'Headers' window. (New msg:) This is getting stranger all the time..... I've switched to Apache (v. 1.33....). It's s-l-o-w, extremely slow, but the pages keep popping up correctly. But the cart still always contains ZERO items! In the Store-view,(where I peek with <%=session.session_id%>), the _session_id is always the same, and in the 'Live HTTP Headers' window, there is also a _session_id from 'add_to_cart' which is the same at every access to the page, BUT THE TWO are DIFFERENT. Rephrasing it more clearly: Every time I go back to the 'Store-view," I can see that the session-id is the same at every page access (peeking with <%=session.session_id%>), but in the browser's 'Live HTTP Headers' window, the _session-id is a different one, but always the same at recurring sendings to the browser. The session-id ought to be the same, doesn't it? Do you understand anything? I've been stuck here for nearly 2 weeks now. (Thanks to Christian Klauser for great help in circling in the bug) Reagards, Audun.
on 2006-04-18 18:10