search for: orderdetails

I''m playing out with writing an online store. So far it has accounts, addressbooks, and orders, and those 3 are tied together with an customer ID. I also have orderDetails, which are associated to the order via an order number. See models below... When I do the following I can access the orderDetails information just fine: @order = Order.find(params[:id]) # i pass it a customer id and i could access the orderDetails by doing this: <%for detail in @orde...

I''m playing with an online store.... I have an orders table which holds orders (pricing, statuses, etc). An orderDetails table which holds detailed line items (itemNumbers, unit prices, etc). Each order can have multiple shipping addresses, so I also have an addressbook table. Each orderDetail is tied to an addressbook entry via the ordernumber and addressbook alias, but this doesn''t seem to work for me....

...''SELECT shortName, longName '' + ''FROM cardTypes ct '' + ''WHERE ct.id = #{cardType}'' #has_one :cardType, :foreign_key => ''id'', :conditions => ''id = ""#{cardType}""'' has_many :orderDetails, :foreign_key => ''orderNumber'', :finder_sql => ''SELECT * '' + ''FROM orderDetails od '' + ''WHERE od.orderNumber = #{orderNumber}'' end class CardType < ActiveRecord::Base set_table_name ''cardTypes...

All, I''ve just started Rails and Ruby a week or so ago. Please forgive me for my ignorance. I started writing a small test application to test some of my new knowledge and have hit a wall. Would like some best practices. I have 3 tables, as below... CREATE TABLE `carts` ( `id` int(11) NOT NULL auto_increment, `name` varchar(255) NOT NULL, `quantity` int(11) NOT NULL, PRIMARY

Hola, Por favor, ¿me podéis referenciar algún libro de R que aborde en profundidad la generación de gráficos y almacenamiento de los mismos en fichero de salida?. Me refiero tanto a gráficos relativos a series temporales como a gráficos/tablas que recojan datos numéricos. Gracias de antemano. Atte. Eva Prieto Castro [[alternative HTML version deleted]]