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First of all id like to say hi to everyone from Argentina, im yet another Depot first-timer. Going through the example, i got to the point where my cart finally runs Ajax-based. And there is a line where Dave says, after all the job is done "You should see the cart in the sidebar update. And you shouldn''t see your browser show any indication of reloading the page. You''ve just created an AJAX application.". 10 seconds aft...

I have a shopping cart function, and I''d like to set it up to update the cart with AJAX. My AJAX call will return a view that displays the cart items. My question is with regards to keeping things DRY. When the user goes to "view cart", that page needs to display the cart, then the cart display ne...

I have a really horrendous problem with sessions. before_filter :find_cart_from_session private def find_cart_from_session if session[:cart] # if there''s is a cart in the session begin @cart = Cart.find(session[:cart]) # return existing or new cart rescue ActiveRecord::RecordNotFound @cart = Cart.create @cart.save...

...to handle stock levels in a new store I''m building. When products are entered into the admin of the store, they have a stock number associated with them. What I''m not sure about, is how I go about maintaining this stock level. Take this scenario: 1. User A adds an item to their cart, and I check that it''s in stock - all good. 2. User A continues to shop 3. User B adds the same item to their cart, and I check the stock again - fine again. 4. User B checks out, pays for the item, and I decrement the stock level for that product 5. User A is out of luck because someone h...

Given this code (which renders rjs), I''m faced with the fixture- driven way of spec-ing or mocking. How the heck to you mock this so the code at line (2) and (4) work right? I''m still struggling with mocks but it seems like this can be done. Forgive the naivety of this question. 1. def change_quantity 2. @line_item = LineItem.find_by_id(params[:id]) 3. unless

...lready know, the book goes through the regular development cycle of the Depot application. I have hit a wall when they started talking about the sessions and the exact mechanics of how an item is added to the session. The code looks like this: depot/app/controllers/store_controller: def add_to_cart @cart = find_cart product = Product.find(params[:id]) @cart.add_product(product) end private def find_cart session[:cart] ||= Cart.new end end depot/app/models/cart.rb class Cart attr_reader :items def initialize @items = [] end def add_product(product)...

...item they get a blank form, fill it in, and save it. If they select that item again, the request gets redirected to the ''edit'' action and they get a form with the existing data displayed. I figure to check the session to see if there''s an entry for that object (like the Cart object in the Depot app) to drive the logic. I''m assuming this will work, but.... Can someone point me to some documentation on just exactly what Rails is putting into the session store, how to access it, etc? Thanks, Bill -------------- next part -------------- An HTML attachment was s...

Many of you probably know the ''depot'' app from the ''Agile Rails development'' book. 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(pr...

Hi folks, I''m putting together a site that will have a shopping cart tab along the top which, when clicked, slides down to reveal the full contents of the cart (covering the page underneath it). When designing it and getting the styling right, I had the page display the cart fully open by default. This worked fine - the cart can close and open any number of times...

I''m trying to implement a remove from cart method based on the examples in the second edition Agile book. I have everything working except for the RJS that removes items from the cart. Ideally what I''d like to do is highlight an element that I am deleting only if there is more than one of that particular item in the cart....

I bought the second edition of the ruby on rails, it seems to work fine now, did some adjustments to the code. But now I get a second error and I want to learn to understand to fix them myself. So here is the error. ArgumentError in StoreController#add_to_cart wrong number of arguments (1 for 0) #{RAILS_ROOT}/app/models/cart.rb:15:in `initialize'' #{RAILS_ROOT}/app/models/cart.rb:15:in `add_product'' #{RAILS_ROOT}/app/controllers/store_controller.rb:19:in `add_to_cart'' -e:4 Now, it says as far as I understand it, that it should...

...[''user''] and session[:user] ? and how would you use each? And another question, I have the following code: def get_customer if @session[''customer''] @c = Customer.find(@session[''customer'']) end end private def initialize_cart if session[:cart_id] @cart = Cart.find(session[:cart_id]) else @cart = Cart.create session[:cart_id] = @cart.id end end How do I assign the cart to the logged in customer? Thanks in advance, Elle --~--~---------~--~----~------------~-------~--~----~...

...se end self end end end end end second, I had a problem where I''d renamed some fields in the model and didn''t want to manually spec out each method, but also didn''t want to go the ''null object'' route. assigns[:cart] = @cart = mock("cart") @cart.stub!(:attr_name).and_return(''cart'') @cart.stub!(:to_param).and_return(''99'') @cart.stub!(:class).and_return(Cart) Cart.content_columns.each { |c| @cart.stub!(c.name.to_sym) } Cart.reflect_on_...

...ame problem as I have, but there solutions doesn''t seems to work for me. I''m trying to do the depot example in the AWDwR book. But now I''m stock with a problem that I can''t solve. I get this error: <--- begin error here ---> NoMethodError in Store#display_cart Showing app/views/store/display_cart.rhtml where line #4 raised: You have a nil object when you didn''t expect it! You might have expected an instance of Array. The error occured while evaluating nil.size Extracted source (around line #4): 1: <h1>Display Cart</h1> 2: 3: <...

...Agile w/ Rails book (latest edition) I can''t get page 115 to display. It says: You have a nil object when you didn''t expect it! You might have expected an instance of Array. The error occured while evaluating nil.each Extracted source (around line #3): 1: <h1> My Agile Cart</h1> 2: <ul> 3: <% for item in @cart.items %> 4: <li><%= item.title %></li> 5: <% end %> 6: </ul> --------------------------------------------------------------------- I''ve checked my store_controller.rb and it is just copied and paste...

hi, I have a draggable element (cart-item) in a shopping cart <%= draggable_element "item_#{product}_#{i}", :revert => true %> When this element is dragged outside the cart into the "main_div", I want to show a puff effect and remove the element. When it is dragged within the cart, it should revert. So...

NameError in StoreController#add_to_cart uninitialized constant StoreController::Cart This is the controller: class StoreController < ApplicationController def index @products = Product.find_products_for_sale end def add_to_cart @cart = find_cart product = Product.find(params[:id]) @cart.add_product(product)...

Great. I''m in the development environment and that is the error message I get?! What good does that do me? I''m trying to follow along with the examples in AWDWR(3rd.), and I have this method in a store controller: private def find_cart Cart.new end That works fine, except that every request(initiated by clicking on an ''add to cart'' button) will cause a new cart to be created, so only the currently selected item will be shown in the cart. Sessions to the rescue! But when I change that method to: privat...

Hello, I have tried implementing the shopping cart ajax example and have run into some problems. The only differences with the shopping cart is My list of products are generated from a partial view The images of the products come from an http link. However, Iam seeing a strange behavior when I drag and drop the elements to my cart. On the first d...

I''m writing a plain text story (testing the waters) and I have scenarios that I need to chain in my specs. Here is what I have so far: Story: User purchasing tshirts As a user I want to checkout So that I can purchase shirts Scenario: User goes to checkout with nothing in cart Given a user And user has an empty cart When user goes to checkout Then user should see the page: site index And page should include the text: you have nothing in your cart Scenario: Logged-in user goes to checkout Given a logged-in user And user has a cart wi...