similar to: Re:

I am getting an undefined method error in my cart.rb class when trying to find in an array. I cannot see what my error is. Perhaps a view more eyes can help me with this: #--------------------------------------------------------------- 1 class Cart 2 3 attr_reader :items 4 attr_reader :total_price 5 6 def initialize 7 @items = [] 8

In the Agile Rails tutorial I am revisiting building a cart. I have followed the steps given in the book to create the class ''Cart'' thus: class Cart attr_reader :items attr_reader :total_price def add_product(product) @items << LineItem.for_product(product) @total_price += product.price end def initialize @items = [] @total_price = 0.0 end

I''m doing the depot example in the Agle Web development book. I''m getting this error: "undefined method `product'' for #<BigDecimal:331ce70,''0.21E1'',8(8)> " "Extracted source (around line #9): 8: for item in @items 9: product = item.product 10: -%> 11: <tr> 12: <td><%= item.product%></td>"

I''m working on building the shopping cart in the Depot tutorial in the Agile Web Development book. I''m at the part (about page 80) where you build the ability to add items to the cart. I''m able to get to /store/display_cart/ and it seems items are being added, but if I just click on a link to add an item (/store/add_to_cart/2) it gives me this: NoMethodError in

This is a newbie question, I have a class which is not derived from ActionController or ActiveRecord but I want to use logging, I tried require but still logging does not work - This class is located in a file in "model" directory. ------------------------------------ require ''logger'' class Cart def add_product(product) logger.info("Searching for product

I reached page 82 of the Book "Agile Development with Rails" First Edition. After I compiled the code I got the following error message. [CODE] NoMethodError in Store#display_cart Showing app/views/store/display_cart.rhtml where line #11 raised: undefined method `product'' for 1099.0:Float 8: <table> 9: <% 10: for item in @items 11: product = item.product 12:

Hi everybody, I''ve search a lot on google to help me with this one without success. I know that some people had the same 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 --->

hi, i''ve been cracking my head on this one for a while and would be humbly grateful for any pointers i''m working through Agile Web Devopment w Rails and, in the depot example have created the cart class for session handling, but am getting the following error, which suggests the @items variable is not being populated with any data from LineItem NoMethodError (You have a

hi all, i am trying a little project based on the agile book''s shopping cart example and have hit a problem. the inserts are failing when saving a quote which contains line_items. the models are as follows (quote_line_item is using single table inheritance): class Quote < ActiveRecord::Base has_many :quote_line_items end class LineItem < ActiveRecord::Base end class

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,

Hello! I am working my way through the Agile Web Development guide on RoR (the depot application). I am a bit lost as to where to debug the following error. The error is pasted below: ================================================================================================ NameError in Store#add_to_cart undefined local variable or method `product'' for LineItem:Class

I am having a bit of trouble with the error. I hava a product and category table and wanting to display the categories in a drop down list. Below is the error I get. Any suggestion on how I can fix this. undefined method `name'' for #<Category:0x3652448> 9: <select name="product[category_id]"> 10: <% @categories.each do |category| %> 11:

Hello, I am veeeery new to rails and also to ruby. I have 2 books here on my desk and try to go through it. The first book is "Agile Webdevelopment with Rails" and I have trouble with the following code which I have from the book. I cant get it working. I searched a lot on google - and also on the erata pages of the book publisher but without any luck. I hope someone can help me.

anyone can explain me why in the Agile Depot Tutorial application they use i.product_id to find if a product already exist in the cart, because the cart contains items which each of them reference a product. I tried i.product_id like in the tutorial and i.product.i all of these 2 notation works , but i find the second s more clean. Any explanation will be fine Regards def

Thank you for the comments on conditional replacements. I now have another oddity to deal with. When adding products to the session cart I am not able to have the count incremented if the product has already been selected, rather another item is added to the cart. I copied the code from the book as carefully as I could and could find no error but to be sure I then cut and pasted the code

I want to modify and update the items in the Depot - "display_cart". Since the cart is in a session, its a little hard to get at the data. I just want to create a way to change quantities, prices and recalculate. Has someone done this, and could you point me to the right direction. Thanks Chas -- Posted via http://www.ruby-forum.com/.

All assumptions aside, "rectest" and "salt" are usernames not databases/schemas according to the pasted config. If they were in fact different databases/schemas, this problem could never have happened. While different database brands may have tricks for ways to handle users and what they perceive as a database/schema, the fact remains that if 2 literally separate databases

The Problem: how to do the validation. I have not written it correctly!!! Given two tables: sizes and prices; with a relation: has_many ,belongs_to a Price.unit_price for a given Size.meassure must be marked ''true'' as the standard unit_price for that meassure. There will be many other unit_prices for a given meassure, those must be marked ''false'' table

Let''s assume that I am trying to build an application where the user can enter invoice. In the app the user can add lines items. Each line item has decription, date, rate and hours. When the invoice screen comes up the first time I have one blank row for the line items. <tr> <th>Description</th> <th>Date</th>

Instead of using numeric I created the field "unit_price" as PostgreSQL type money. Now when I try and add a row I get the following. How do I override AR default behaviour to cast numeric post data to money, or am I forced to only support database types that active_record knows about? RuntimeError: ERROR C42804 Mcolumn "unit_price" is of type money but expression is of