similar to: Working with topics and categories

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 am using postgres and have two migration files like 001_create_categories.rb as class CreateCategories < ActiveRecord::Migration def self.up create_table :categories do |t| t.column :name, :string, :limit=>80 end end def self.down drop_table :categories end end and 002_populate_categories.rb class PopulateCategories < ActiveRecord::Migration

I may be doing this wrong! but I have a function which I have simplified a lot below. I want to pass some 'field names' of a data-frame to the function for it to then do some manipulation of. Here's my code: #build a simple dataset mydataset = data.frame (

Hi there, I have a relatively simple question, though, I couldn't find a solution for it so far. I have a table with 1000 entries and columns containing information about different parameters for each entry. What I want to do is group all parameters from one of the columns [e.g. if all 1000 entries are grouped in 30 different categories (described as character strings) in a second column] and

Hi All, I want to create empty vectors inside an empty data frame.The name of the vectors has to come dynamically. For example if record_mean is my empty data frame,and i have say 4 categories,the category names for record mean data frame has to recmeanC1,recmeanC2,recmeanC3,recmeanC4,which will be dynamically created and which will again be inserted in my data frame's as column values.Each

I have some pictures that I unload from the camera into: dir/tmp and at night I automatically rsync all of dir/ to some remote:dir/ Then days or weeks later I do some local sorting, and I make lots of image moves of the sort where image dir/tmp/bar goes to to dir/category1/bar, possibly linked also into dir/category2/bar. Then rsync runs the next night, notices the "new" image

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

My database is set up as Categories > Things associated by category_id and has_many and belongs_to. How would I go about listing all the categories and under each Category is it''s children? Is there an easy rails way to do this - preferably without using acts as tree? Any help is appreciated - thanks! -- Posted via http://www.ruby-forum.com/.

I''d like to produce an SQL update along the lines of: UPDATE companies SET category2={newcategory} WHERE (category2 = {oldcategory}) At the moment I''ve got: ctype = params[:ctype] Company.update_all("category2=ctype", "category2=ctype") At present this returns a StatementInvalid: Unknown column ''ctype'' in ''where clause'':

Hello, I''ve done === class HomeController < ApplicationController def index @country = Country.find(:all, :include => "cities") end end === And rhtml is: === <% @country.each do |country| %> <h1><%= country.name %></h1> <% country.cities.each do |city| %> - <%= link_to city.name, :action =>

2009/6/20 Silvia Pfeiffer <silvia at silvia-pfeiffer.de>: > I agree, this has been a huge problem - and in fact is a problem with > html5 <video> more generally than ogg. > > How do you think that a chain identifier in skeleton will make it > possible to have e.g. a single seek bar over a stream? Would it be n > timelines or one? I was thinking that it would be

Dear R-help list, I'd like to create visualize the clustering of a dataset with a dendrogram. I'm using the following script: data = read.table("data.csv", header=T, sep=";") require(cluster) res = as.dendrogram(agnes(data)) chlab <- function(n) { if(is.leaf(n)) { att <- attributes(n) labx <- data$category1[att$label] lab_color <- ifelse(labx ==

2009/6/21 Hans J. Koch <hjk at linutronix.de>: > On Sun, Jun 21, 2009 at 01:27:25AM +0900, Conrad Parker wrote: >> 2009/6/20 Silvia Pfeiffer <silvia at silvia-pfeiffer.de>: >> > I agree, this has been a huge problem - and in fact is a problem with >> > html5 <video> more generally than ogg. >> > >> > How do you think that a chain

On Sun, Jun 21, 2009 at 01:27:25AM +0900, Conrad Parker wrote: > 2009/6/20 Silvia Pfeiffer <silvia at silvia-pfeiffer.de>: > > I agree, this has been a huge problem - and in fact is a problem with > > html5 <video> more generally than ogg. > > > > How do you think that a chain identifier in skeleton will make it > > possible to have e.g. a single seek

Hello guys, Usually, I write web apps on mod_perl2+Mason, but I get involved on RoR... Can I write Ruby and/or RoR apps without CGI? Thanks. -- Posted via http://www.ruby-forum.com/.

I''m trying to use collection_select, but it''s not working as I expect. The list populates correctly but the current value is not selected. @question contains a topic (via topic_id), and @topics is the list of all topics. Here''s my attempt to create a drop-down list of the topics. form("question") do | form | form << content_tag("b",

Is it possible to put conditions relative to the current instance in has_many''s :conditions? For example, in a forum app: class Post < ActiveRecord::Base belongs_to :topic has_many :self_and_descendants, :class_name => "Post", :order => "lft", :conditions => "topic_id = #{topic_id} AND (lft BETWEEN #{lft} AND #{rgt})" end With the

So I have the following model class Topic < ActiveRecord::Base belongs_to :topic has_many :topics, :order => :position acts_as_tree :order => :position acts_as_list :scope => :topic_id end that I use for a site''s navigation. Everything (list, create, edit, even the drag&drop sort) works fine, except the destroy function, which the vanilla version def destroy

Hello! I was advised by the forum moderator to ask for contribution: http://www.centos.org/modules/newbb/viewtopic.php?topic_id=20223&forum=38&post_id=76546#forumpost76546 My wiki login is VladislavRastrusny I would like to contribute for Tips & Tricks section with a small automated script to install webmin repository data and webmin itself from here:

I''ve created several different Rails applications but I''m running into the same trouble with each one. Lets say I create an app called Test. I type ''rails test'' and it generates the directory for me. Now I edit my database.yml file. Then I create a database with Postgresql by typing createdb test. Now I go into Postgresql by typing ''psql