similar to: eLibrary doesn't work

I''m reading a book "Beginning Ruby on Rails" I made an table, and tried to make an Model class. But it doesn''t work. I made the table as below. mysql> show columns from books ; +-------------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra |

People, I''m looking at the migrate example on p 74 of the rails2.pdf It''s a simple example of using a migration to add a column to the products table. Here is a copy of the migration file named 002_add_price.rb after I generated and then edited it: class AddPrice < ActiveRecord::Migration def self.up add_column :products, :price, :decimal, :precision => 8, :scale

justin at methuselah:~$ wine --version wine-1.0.1 justin at methuselah:~$ uname -a Linux methuselah 2.6.27-9-generic #1 SMP Thu Nov 20 21:57:00 UTC 2008 i686 GNU/Linux I use Adobe Acrobat Reader version 8.1.1. It can open files that don't require decryption online. I, however, have to connect to an external server to validate my unique user name and password for the pdf files I must read.

Dear R users, I'm hoping to get a few suggestions about which books are good to follow along and learn R. I'm hoping to spend the summer going through a good R book as it is applied in linear regression. Thanks!

I am taking a behavioral stats graduate class and the instructor is using SPSS. I'm trying to follow along in R. Recently in class we started working with scales and survey data, computing Cronbach's Alpha, reversing values for reverse coded items, etc. Also, SPSS has some built in functionality for entering the meta-data for your survey, e.g. the possible values for items, the text of

Hello All, ? Recently, I discovered that there are appear to be some good R related books that don't have R in the title. For example, I'm currently reading Gellman and Hill's book Data Analysis using Regression and Multilevel/Hierarchical Models. The book uses R (and BUGS) but doesn't appear to be on the CRAN list of R books.?I stumbled across it by accident. ? This got me to

I am a complete beginner to Ruby. I followed the tutorial to create my own scaffold called Books. My problem is that, when I make changes to its index.html.erb, the http://url/books page does not update for a few minutes. I am using a development environment, and the config.action_controller.perform_caching value is already set to false. Any help would be appreciated!

People, I have gone through the cookbook example: http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html?page=1 and everything worked fine an a FC4/Postgres setup. I then tried to reproduce this success with something that would be useful to me - a library db using books & authors tables. The author list works but NOT the book list (unless I take line #17 out). I get this message:

Hi all this is my first post to this list. Im am trying to use the InPlaceEditor, but I only manage to make it work in very simple case as in teh demo on the wiki. In my case I have a list of records ("books") with different fields and each field has an InPlaceEditor. My problem is how to pass teh id of the record to the update action at the controller, I tried to define the

Dear Kevin, In addition to the advice you've received, take a look at the survey package. It's not quite what you're asking for, but in fact it's probably more useful, in that it provides correct statistical inference for data collected in complex surveys. The package is described in an article, T. Lumley (2004), Analysis of complex survey samples, Journal of Statistical Software

I''m trying to add a way to query across associations for a model in acts_as_ferret. Say I have a model A and it has a relationship with model B. Like say a Book has many pages. I want to search across the pages of the Book and produce a list of unique books who''s pages match the terms. So if I have a page that hits then I will add that book to my list of results. Right

Hi, Just wondering if anyone has had any luck with Quick Books. I attempted to get the premier version installed today. With the help of winetricks, I got all the prerequisites installed. The installation looks like everything is running fine. However, when it gets through all the questions, and starts actually installing, it dies on file copying. I tried installing from the CD. I'm

Hi I would to know if there is a way to install all libraries of wine without using the one by one method from the wine's configuration window

I keep getting this exception "SQLite3::SQLException: no such column: books.user_id: SELECT "books".* FROM "books" WHERE ("books".user_id = 4)" ,which sounds like there is no user_id in books table.So i just installed foreigner plugin and added " t.integer :user_id, :null => false" and "add_foreign_key(:books, :users)" in book

Hi all, Please recommend good books for the following three categories. (I am aim at finance, macroeconomics, trading and business applications). (1) statistical (financial) data analysis; (2) time series; (3) econometrics. More specifically, I am looking for the following two types of books: (1) Books that provide big pictures and intuitions and books that connect dots... For example, there

This post addresses URLs generated by Ruby on Rails from a human factors point of view. Allow me to use Hieraki as an example. Hieraki is a great application. It was one of my first introductions to the power of Ruby on Rails. Scenario: When I navigated to Chapter 1 of a book the URL in my address bar was http://www.library.com/read/chapter/6. This inconsistancy ("Am I on Chapter 1 or

Hello all, i found something wrong (or maybe i was wrong?) this looks like a rectiverecord bug , can anyone help me to point out what''s going on? ------------------migration create_table :books do |t| t.column :name,:string t.column :person_id,:integer end create_table :people do |t| t.column :name ,:string end ------------------model class

I consider myself not having any real programming experience. I've went through 5 weeks long basic courses for each of these scripting languages. So no real programming experience to fall back on and I basically can't do anything useful with any of these languages anyways. Matlab PHP+MySQL bash But I want to learn just enough to be useful for the Wine project. And thus enable me to see

Hello folks! Beare with me for a second, while I explain my problem. Assuming we have the trivial model of class Author has_many :books end class Book end How do people go about creating the authors/edit and authors/new views if you want to be able to add and remove arbitrary amount of Books at Author creation and edit time? What I mean by this is that I go to

Is there such a thing? I am thinking of an application that has something like this: 1. person has many things - there is a ''persons'' table 2. the things he has are stored in a table that is something like this person_id, thing_table_name, thing_id For example, it may map to person1, books, 23 #Person 1 owns book 23 person1, books, 25 #Person 1 owns book 25