similar to: HOW DO I populate options from previous option click

Howdy Gang, in a major controller that has many methods using the same lookup tables for option choices and such, what is the life expectancy of the list instances. Is it useful to set these up in the controller initialize method - or is that utterly dumb? Cheers, Eric

Hello, I am trying to make the "switchover" to programming my apps in Rails and have a question about database structure. In the past i would structure a many to many like this: categories ---------------------------------------------------- | id | name | ---------------------------------------------------- 1 Some Category 2 Another

Hi there, I try to develop a medical application using ruby on rails. There are many categories which can contain subcategories. I defined the model like this: class Category < ActiveRecord::Base has_and_belongs_to_many :notes belongs_to :parent_category, :class_name=>"Category", :foreign_key=>"category_id" has_many :sub_categories,

I''ve been stumbling on the tut at oriontransfer (http://wiki.oriontransfer.co.nz/main/show/SortableTree) I''ve got it working in a one dimensional list and I''ve got the drag and drop working on children, but as can''t get it to save the tree. Here''s my view: <h2>Menu Prototype 2</h2> <%= flash[:notice] %> <ul

I have categories and sub-categories in a table called "categories". Every row has a "parent" field to note if the entry is the sub-category of another (never goes deeper than 1 level). So there might be something like this: id | name | parent 1 Dog 0 2 Pug 1 3 Siamese 5 4 Shih Tzu 1 5 Cat 0 6 Wiener Dog 1 7 Persian

I am working on an Rails application that uses a pretty complex category structure through out the site. I have defined a table to house all the info and a FK to reference parents within the table CREATE TABLE categories ( id int(11) NOT NULL auto_increment, name varchar(50) NOT NULL, parent_id int(11) default NULL, constraint fk_category_id foreign key (category_id) references

Hi, seem to keep running into a wall here. I can''t find any resources on site navigation that can deal with any model being in the nav, allow nesting, and can dynamically update. So I thought about it for a while, and decided on a MenuItems class, which contained the position of the child in relation to it''s siblings, where the parent and the child were polymorphic. Then a given

Hi, I''m currently running an apache/jboss cocoon/flow/hibernate/ajax paypal (directpayment) project and am looking into the possibility of porting it across to ruby/rails. For that reason I would like to know the following: 1. Can I call my java classes or would I be looking at a complete rewrite in ruby? 2. How effective is ruby in terms of seperation of concerns regarding design from

I''m doing an HTTP post to my controller with an xml request body: curl -u 53b2c:X -H "Content-Type: text/xml" -v -d "<subscriber><full_name>Alex Egg</full_name><carrier_id>2</ carrier_id><mobile_phone>1234321843</mobile_phone><password>asdf</ password><sub_categories

hi guys, I am testing a new optional funtionality in my site with IE 8 after success with Firefox 3.6.3, chrome and safari. The new functionality basically sees a "sub category" drop down list get generated in my form as soon as a "Category" value is selected from the "Category" drop down list. I have been using the standard rails api such as observe_field, and

Hi, I am having problems with my page. I have a banner and navigation bar in controller_name.rhtml in app/views/layout. Can someone please help? Thanks In the navigation bar, I have the following links: Category1 Sub-Category1 Sub-Category2 Sub-Category3 Sub-Category4 Sub-Category5 Sub-Category6 In the main content, I have the following links: Sub-Category1 edit delete

Hi, I''m running round in circles again! I''m trying to save a note that has a HABTM relationship with a job. The note is new - the job exists. In my partial for notes I have ; <%= start_form_tag :action => ''new_note'', :id => @job %> <%= text_area_tag "note", nil, :size => "65x10" %> <%=submit_tag

Hi Thanks for help me out I have two routes : match ''admin/categories'' => ''admin#categories'', :as => ''admin_category'' match ''admin/categories/:sub_category'' => ''admin#categories'' In rspec

How the hell do you close em off after the action is completed? Ta, Eric

Hi, I have the following code fragment; @comm_type = Communication.find_by_sql(''select id from communication_types where upper(description) = "EMAIL"'') Which results in >> @comm_type => [#<Communication:0x39a0f60 @attributes={"id"=>"4"}>] But when I try to test an ActiveREcord against this it doesn''t work;

Hi, I have two objects: Contacts Lists I want to be able to add multiple contacts to multiple lists. I''ve created a linking table and a form that allows me to select the contacts using checkboxes, but I''m having some problems with the controller and model. I receive the following error message when I submit the form: Mysql::Error: Cannot add or update a child row: a

I have a form that sends the following query string to my Rails controller: transaxion[category_association_attributes][][category_id]=2& transaxion[category_association_attributes][][amount]=12& transaxion[category_association_attributes][][category_id]=1& transaxion[category_association_attributes][][amount]=8 But ActionController parses it as:

Hi Gurus, I''m trying to tackle a drop down list. I have category and item dbs, and they''re wired up with category has_many :items and item belongs_to :category, and an item has a category_id. I have this code in my new/edit.html.erb for item: <%= f.collection_select :category_id, Category.find_main, :id, :header, {}, :multiple => false %> And a pretty drop down list

I really hope this is not a bad question (as in he''s abusing the list). However I could use a little direction (even though I''m reading books, tutorials) Right now I''m getting a undefined method `category'' for 4:Fixnum The specific lines from the rhtml file are: <td><%= link_to position.category_id.category, :action => "show", :id =>

I was brainstorming today about a smooth way to define conditions in an sql query, when the numbers of attributes increase, so does the uglyness. So instead of passing a hash, I thought you could specify the conditions directly in code. I hacked together some example code which actually turned out to work. The result is concise and pretty beutiful. def search(params) Ad.find(:all) do