similar to: Rails associations: Easy Question requires dumb answer

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

Hi, This is my rHtml page & Corresponding actions & model pages:- ===listform.rHtml================= <h1>Products List</h1> <%= start_form_tag(:action => "add_to_cart")%> <table> <tr> <% i=0 %> <th> Product No. </th> <th> Unit Price </th> <th> Available Qty. </th> <th> Demand Qty. </th>

Hi, I have a real simple association setup here that''s just trying to: - Create a new PayjunctionOrder - Create some LineItem objects and assign them to the PayjunctionOrder - Save everything I''m using Rails Edge. ---- class PayjunctionOrder < ActiveRecord::Base has_many :line_items end ------------------ ---- class LineItem < ActiveRecord::Base belongs_to :order,

Having a devil of a time finding records in a self-referencing has_many table relationship. Everything is working find looking at the has_many and the belongs_to relationship. But, when I try to find all "orphans", records that are neither a parent nor a child, I can not find a query that work in ActiveRecord. This query works in MySQL: SELECT * FROM templates LEFT JOIN templates

What is the most elegant way to save new one-many associations? order = Order.new(:name => "My Order") order.line_items << LineItem.new(:product_id => 1, :quantity => 2) order.line_items << LineItem.new(:product_id => 2, :quantity => 5) order.save The above - which is by far the most elegant way of putting it - doesn''t work for me - the line_items

Hi all, Regular and avid readers of this column will know that Don Driscoll and I have recently posted two messages requesting assistance concerning an apparent failure of "se.contrast" to produce an se for a contrast. So far, an ominous silence rings in our ears, but read on Gentle Reader, and see if even the machinations of "debug" doesn't stimulate you to respond with a

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 thought I had a handle on this one but it''s causing me grief and I''m hoping somebody can set me straight. I have an object AlertTemplate which will contain a fill in the blank style hunk of web content. I then have an object, Alert, which will have a relationship to one of those AlertTemplate objects, plus some data. So, in human speak, I''d think that an Alert

May seem strange but I''ve gotten a couple requests from clients [2 out of 4] abt this.. generally the requirement is that they want to serve up slightly different content but from more or less the same app.. I dug into init.rb and determined that its seems likely with some rearranging of facebooker.yml config - is there anything else of the top of anybody''s head that might be an

I''m doing a redirect in one of my controller actions and somehow I can''t spec it, see this pastie: http://pastie.caboo.se/53120. When following the link from a browser I''m being redirected to the right page. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, I am trying to restrict duplicate has_and_belongs_to_many associations. I tried to find support for a association validation for duplicates but couldn''t find anything. I understand I could use :uniq=>true on the model association but this would only prevent it from displaying duplicates, I want to stop duplicate associations being inserted in the first place. I have a vague

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, each of them references 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 seems more clean??? isn''t it. Any explanation will be fine Regards

I''m new in Rails, and I''m building my first application. I''m trying to make a FAQ for this application, organized by product (questions about each product) and category (questions of different categories or topics), and there is something I can''t figure it out how to do. I have these tables: create_table "faqs" do |t| t.column "question",

I can''t seem to figure out how to validate a few fields some1 please help me out model--------- class Record < ActiveRecord::Base validates_presence_of :sw, :flex end controller------------ class RecordController < A;;icationController def new @record = Rrecord.new @product = Product.find(params[''product_id'']) end def create

Hello, I am new to ruby on rails. When I tried to create a session I am getting an error, ''wrong number of arguments (1 for 0)'', in my controller. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ArgumentError in CustomerController#add_to_cart wrong number of arguments (1 for 0) RAILS_ROOT: /project/bob_shopping Application Trace | Framework Trace | Full

Hello! I have a legacy DB and want to use ActiveRecord for it. However, I can''t set up a relation correctly. Here''s table spec: [products] id name price [subproducts] product_id subproduct_id Some example data: [products] 1, "Computer", 500.00 2, "Monitor", 200.00 3, "Printer", 100.00 4, "System", 700.00 5, "System2",

I''m trying to figure this. in my schools controller i want to do this.... # implement a create action to create just the review for the School... def create_review_for_a_school @review = Review.new @school = School.find(params[:school_id]) @review = @school.reviews.build(params[:review]) if @review.save # The creation worked....do this flash[:notice] =

hi people I don''t know much about ajax - jquery. And right now I need to use some functionality with them. In a form (sales model) I have the following code: <div> <%= f.label :product_id, "Product" %> <%= f.collection_select( :product_id, Product.all, :id, :name, options={} ) %> </div> <div> <%= f.label :price,

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/.

Been trying to use the short format for a collection in rhtml, i.e. <% collection.each {|x| puts x} %> Doesn''t seem to work though [outputs nothing] ? -- Posted via http://www.ruby-forum.com/.