similar to: Sale, pop and product

i have this model: class LineItem < ActiveRecord::Base belongs_to :quote end in the console: >>l = LineItem.create ActiveRecord::StatementInvalid: Mysql::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' , , , )'' at line 1: INSERT INTO line_items (`qty`, `quote_id`,

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 not sure of the best way to model this situation in Rails and would appreciate some guidance. An order can hold multiple line items. Each line item is for a certain number of any given product. There are four products, each in a different table because they have completely different attributes. So I have: Order - has many LineItems LineItem - belongs to an Order

Hi everyone, I am relatively new to rspec and I am running into a wall in testing my views. I have a RESTful resource Contracts with a nested resource of Line_items. I am trying to figure out how to test the "edit" form of the Line_items. What complicates this is the nested routing and how to account for it, and that there is a partial form (_form.haml) that both the edit.haml and

Hi all, I''m having trouble figuring out how 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 -

I have a method: ? def reduceProuctInventoryBy(product_id, reduction) ? ? t=Product.find(:first, :conditions =>["id = ?", product_id]) ? ? t.qty=(t.qty-reduction) ? ? t.save ? end and the model: class Product < ActiveRecord::Base ? validates_presence_of :qty, :specialDescription ? validates_numericality_of :qty end but when i run my method, I get this: "can''t

Hello, I have a model called invoice and one called lineitem. An invoice has_many lineitems, and an lineitem belongs to an invoice. I have a model method that calculates the price of a lineitem, and one that calculates all lineitems in an invoice. I want to have an edit page that lists all the invoices lineitems and their calculated prices, with a text field for a person to change the

I have tData as below. I need to set the names with the headers from the first row in sHeaders Sorry .. forgot how to set the names from row in another data frame .. pls advise. names(tData) = sHeaders[1,] does not work correctly Also, why doesn't drop.levels(sHeaders) not work? dput(tData) structure(list(V1 = structure(c(3L, 1L, 1L, 2L), .Label = c("P H Ravi Kumar", "Rahul

Hello List! Thank you for your input so far. I have successfully imported my data into R but have hit a snag in plotting. Simple plot commands are unable to find my headers when I try and plot my data on an x/y scatter. My data is a 2 column 8000 row table (saved as .txt file) imported into R. >demand=read.delim("C:\\Documents and Settings\\E066582\\My

Hello again, I have a table called line_items, with the following fields: id int item_name varchar() qty int conditions text I''ve made my LineItem model, and everything works as such (with simple text_fields).. Now I''d like for the conditions field to be a select_tag() with multiple choice possibility. I''m guessing I need some code to expand/restract the array for

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:

We have several Sangoma cards that we used during a transition time in our the replacement of our legacy voice system that we no longer need. Each of them saw about a month of service and are in good working order. We'd be happy to get 70% of retail for them. They are as follows: qty 2 A104D PCI w/ on board echo cancelation - $1500 each qty 1 A102D PCI w/ on board echo cancelation - $1050

Hey all, I''m trying to find a simple way to reference all of the objects that belong to their parent''s parent. In other words: Clients --> Orders --> LineItems How do I get all of a client''s lineitems in one array (i.e., client.all_lineitems)? Thanks! -Neal -- Posted via http://www.ruby-forum.com/.

With this example set.seed(123) A <- matrix(runif(40), nrow = 8) y <- 1:nrow(A) A.laqr <- qr(A, LAPACK=TRUE) both qr.qy(A.laqr,y) and qr.qty(A.laqr,y) give the respective error messages Error in qr.qy(A.laqr, y) : 'b' must be a numeric matrix Error in qr.qty(A.laqr, y) : 'b' must be a numeric matrix However when Lapack is not used as in A.liqr <- qr(A,

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I am having some difficulty understanding the implication of lazy evaluation mixed with DUP=F in a .Fortran call. In qr.qty from base DUP is not used as an argument so defaults to T. I am calling qr.qty with a very large array and would like to set DUP=F in the .Fortran call so that qr.qty would be defined as copied below. Is there some risk that a variable used as the argument in the original

I tried command as.numeric(Qty) #converting column"Qty" in object "demand" to numeric. However it remains a non-numeric value. What is the best way to convert a column of data to a numeric value in R? What is the best way to convert dates into a numeric format (or some format able to be used in an x,y scatter) while still maintaining its inherent "date" property?

Hello, I am trying to write a sample application. I have class LineItem< ActiveRecord::Base belongs_to : order end && class Order < ActiveRecord::Base has_one :line_item end Now in the controller i am trying : def add @ord = Order.new(params[:ord]) @ord.line_item = LineItem.new(params[:lineitem]) if @ord.save redirect_to :action => ''list'' else render

Hi all, I am trying to patch a small rails app into a large system we have at our company. The legacy has a large database that naturally does not match the Rails conventions, but this has not been a serious problem thanks to rails flexibility. The problem I just ran into is that my "LineItems" table links back to the "Products" table using a modified foreign key. For

-----Original Message----- From: Struckmeier, Nathanael Sent: Friday, May 27, 2011 1:39 PM To: 'stephen's mailinglist account' Subject: RE: [R] Unable to Plot using headers. Thanks for the input. Despite both graphing directly and with "attach" I am still getting a screwed up graphical output as well as an error. My table is object "demand" w/ columns Date and