similar to: Can't Understand Why This Works

Hi,I am developing a web app and am following the text-Agile web development.....Each time I click my "add to cart" button" i always get the  page below:I have double checked to see if i have errors in my code,there was none,please what do i need to do to proceed? NameError in InteractController#add_to_cartundefined local variable or method `find_cart'' for

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

Hi I am new to the whole Rails/Ruby world as having come from a MS .NET background, but I have followed the Depot example in the Agile Web Dev. with Rails book with relative ease. However as an exercise to see how much I had understood, I thought I would attempt to modify the example a bit and add a Quantity field to the store index so as to pass that value into the cart. I have extended the

I am using this line on my index.rhtml page to capture the quantity required of a particular item for a basic shopping cart app: <%= text_field ''line_item'', ''quantity'', {:size=>3} %> </td> but my next screen (a cart screen) doesn''t reflect what was entered in that text field when the item is added to the cart. That is,

ok, I''m still new to ruby and new to rails. what I have is a task database that acts_as_tree a task can have a children an those children are full tasks so they can have children of their own, Tasks can only be completed if they have no children, a task with children is only completed if all its children are done. this much I have working, I''m trying to add some Ajax support for

I''ve created the following function, and for testing have hardcoded the following values: def addNewRow @timesheet = Timesheet.find(:employee_id => ''1'', :cost_code_id => ''14'', :dept => ''007'', :ending_date =>

Hi all I''m creating a shop page. I have a cart model that looks like the following: class Cart attr_reader :line_items def get_line_item id @line_items.each do |l| return l if l.id == id end end def initialize @line_items = [] end def empty! initialize end def empty? return true if @line_items.empty? false end end And I have some

Hi there, I have a User model and a Profile model. A user has_one profile, and a profile belongs_to a user. The profile model contains a user_id column as the foreign key. The problem comes in when I want a user to register. In the user_controller I have a method that creates the user. I also want the profile model to be filled in with the appropriate user_id foreign key (I don''t care

In an early section on Action View, showing code being put directly into the rhtml file: <% require ''date'' DAY_NAMES = %w{ Sunday Monday Tuesday Wednesday Thursday Friday Saturday } today = Date.today %> <h1>Hello, Dave</h1> <p> It''s <%= DAY_NAMES[today.wday] %>. Tomorrow is <%= DAY_NAMES[(today + 1).wday %>. </p> I get this

Hi all, I''m following the shop example in ''Agile Web Development with Rails''. I would like to extend the checkout screen, in such a way people can change the number of items they have selected in there cart. In my controller I have: def checkout @cart = find_cart @items = @cart.items if @items.empty?

I recently got a copy of the second addition in PDF and got stuck on the Ajax portion using highlighting page 128. While trying to make my cart flash I got an RJS error when I click add to cart. I have gone back and made sure my code matched what was in the book but no help. I sent Dave an email and he rec''d this list. Anybody got any good links for troubleshooting Ajax or maybe have see

Hi - another question, sorry.... I''m trying to get the highlighting effect to work on the current_item. The page refreshes fine, and then I get an error as the highlighting code is fired: page[:current_item].visual_effect :highlight, :startcolor => "#88ff88", :endcolor => "#114411" The error

Hi, I''m implementing a "digg-like" page, that once you digg. The score for each item will dynamically reflect your current action +1 . I am not sure what''s In the controller I have an action responsible for increase of the score.It has a corresponding rjs in view. -------------------------------------------------------------------------------- def arouse

All, I''m missing something simple, I think. I am writing a spec to say that my CouponController should create a new coupon from the form parameters, then set the current user. Here''s the spec: describe CouponController, "When posting to save_coupon" do before(:each) do @expectedName = "pepper''s" @expectedAmount = 5 coupon =

Hi, I''m implementing a "digg-like" page, that once you digg. The score for each item will dynamically reflect your current action +1 . I am not sure what''s In the controller I have an action responsible for increase of the score.It has a corresponding rjs in view. -------------------------------------------------------------------------------- def arouse

I''ve got an integration test that''s failing but i can''t work out why: Here''s the action being tested - in case anyone recognises it, it''s based on the Depot app in Agile Web Dev with Rails. def checkout @in_checkout = true #don''t let user checkout with an empty cart if @cart.items.empty? redirect_to_index("Your cart is

I''m following the depot application in the rails bible Agile Web Development with Rails. In interation E1 NoMethodError in Admin#checkout Showing app/views/admin/checkout.rhtml where line #12 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.include? Extracted source (around line #12):

I am really new to Ruby and Rails but as you probably see I am trying to get the shopping card working from the book. I am getting this error but I really don''t know what to do. I have looked up several of topics that stated the same problem but as far as I am, nothing has helped me out yet. Is there something wrong with the Product model? This is in the StoreController and I believe it

Hello everyone, I''m a complete Rails newbie who is currently working my way through the Agile Web Dev with Rails book. I''ve reached the chapter on creating the shopping cart (chapter 8). I keep having a problem with the same error which I can''t get past, however what''s more confusing is that it''s being generated even when I swap all my app code out

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. If the item deleted is the only of