similar to: Category select list suggestions

I was able to create a has_and_belongs_to_many relationship for my app, but now I''m not too sure how to write queries for it. Basically, I have a table ''courses'' that has_and_belongs_to_many ''categories'' and vice versa So I''m trying to figure out how I would find only the courses that belong to a category that I specify. Let''s

Hi, rails newbie needs help :) I have classified ads (cads) related with cities and categories: class Cad < ActiveRecord::Base has_and_belongs_to_many :categories has_and_belongs_to_many :cities end class Category < ActiveRecord::Base has_and_belongs_to_many :cads end class City < ActiveRecord::Base has_and_belongs_to_many :cads end I assume that user can act such

I have a controller method as such: def delete @category = Category.find_by_name(params[:name]) @element_id = @category.name Category.delete_all(["name = ?", @category.name]) end (For the purpose of this exercise, category names are unique) I have the corresponding delete.rjs file: if @element_id page.remove :id => @element_id page.visual_effect :highlight,

My scenario: On a department''s products page (index.js.rjs), there is a table showing the products with their id, name, category. The view of this table is specified by a partial file called _index.html.erb. I''m going to add in a selection/option drop down menu above the table to show all the product categories. When the user selects a category from the drop down menu, Ajax

Hi all, Merry X''mas first :-) I have "Product","Category","Subcategory" 3 Model, and when new "Product", I want to use "Dynamic Select Menus" just like Ryan mentioned in http://railscasts.com/episodes/88-dynamic-select-menus I have everything down. But when I visit the js file, I got following error Showing

Hello, I am very new to ruby and need to create my first HABTM with multiple select list.  I am having problems saving data in the middle(linking) table.  1. titles can have multiple categories  2. categories can have multiple titles Categories, titles and categories_titles tables are created.  ----- title_controller.rb--   def new     @title = Title.new     @categories =

hm, I have to try that. I am using for third party control so the need to know all the events. ________________________________ From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Josh McAllister Sent: Tuesday, April 04, 2006 4:19 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: RE: [Asterisk-Users] Anyone have a

Perhaps I should create a table row to hold an array of category ID''s? There''s probably an easy standard way of doing this in RoR and I just can''t wrap my brain around a practical way to do this right off. Specifically... I have a table that contains my product category names and another table that contains my actual product names with other product specific

Dear R experts, I have the data in the following fomat(from some kind of card sorting process) ID Category Card numbers 1 1 1,2,5 1 2 3,4 2 1 1,2 2 2 3 2 3 4,5 I want to transform this data into two co-occurence matrix (one for each ID) -- For ID 1 1 2 3 4 5 1 1 1 0 0 1 2 1 1 0 0 1 3 0 0 1 1 0 4 0 0 1 1 0 5 1

Hi all, I have two controllers - "foods" and "receipes" which map to models. Each one will have multiple categories, but the categories are completely different for each one - they don''t share the same category. So they aren''t related at all. If I wanted to do this using resources, what is the best way to set this up? If I setup a categories controller and

Hello there! This is my first post! ;) I''m starting on ruby on rails, so I have many doubts about it! I''m trying to create a system that uses categories/subcategories. I created a scaffold for a table that has the following fields: - id int(11) - name varchar(50) - keyname varchar(50) - visible enum(''0'',''1'') default ''0'' -

All, 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:

okay, breaks the relationship model but it''s a really simple data model so doesn''t need too much about it. here''s my structure, I have a notes model containing... note: name, date, category so each note will have it''s own, name, date and category (with some of the categories being the same, hence sort by...) now i could sort by category easier by having the

I don't think you can selectively receive events. I am also write an app using heavy manager actions, and I put the filters on my app. So far, I have not seen traffic from these events do a dent to my application/network performance. ________________________________ From: asterisk-users-bounces@lists.digium.com on behalf of Josh McAllister Sent: Tue 4/4/2006 2:59 PM To: Asterisk Users

hi, there :) Consider a blogging application whereby a user is trying to add a new blog. He/she has to select a category. Upon selecting a category from a drop down box, a new sub categories drop down box will be created (hence an AJAX call). Got this implemented and it''s ok. Now, let''s assume that a given blog can have multiple categories (and subcategories). For example, a

Hi, I would like to propose extending the Control-Flow Integrity (CFI) mechanism in LLVM/Clang with a feature that allows users to explicitly link classes that have no inheritance link. Usually, if one class is used at locations in code where this class is not expected, this will create a CFI error at runtime, assuming the application is built with CFI enabled. However, in cases where the user

Hi, I want to display a list of links grouped by category like this: Group 1 Link 1 Link 2 Group 2 Link 1 Link 2 I have this in my controller: def index @links = Link.find(:all, :order => "category_id") end And this in the view: <ul> <% for link in @links %> <li> <a href="<%= link.url %>"><%= link.link

Suppose you have a forum with many sub-forums, and each sub-forum has many categories (or sub-sub-forums), and each category may or may not have many sub-categories (or sub-sub-sub-forums). Will a topic belong to the sub-category AND category AND sub-forum; or only to a sub-category, that will in turn belong to a category that will in turn belong to a sub-forum? -- Posted via

I have a project I''m trying to decide if I want to use rails for. I''m new to rails, so I''m not sure how easy it would be to implement something like this using ActiveRecord. Here''s the situation: Category > subcategory > subcategory > product Category > subcategory > product Some categories will have many subcategories, others few. I want

Basically, I''m trying to have a table called "categories" have a many to many relationship with itself. But I also want each catagory to be able to be "copied" into another category so it is essentially a child category to more than one parent. To me the obvious way of doing this is by creating another table called category_maps (and a model called CategoryMap).