similar to: Save using Update

I have a template that belongs to a certain model (model A). I need to call a helper method of a different model (model B). Then I need the helper method of B to call a helper method of model C. I tried using "include" and "require" and using namespaces, but I got "undefined method". What is the way to do it? -- Posted via http://www.ruby-forum.com/.

Suppose I have three tables - authors, posts and topics. Every post have a topic and every topic has an author, so I have posts.topic_id and topic.author_id. When the author is guest (not registered), author_id is nil. I need to find all the posts (in one query) where every post have all the information of the topic and the auther, so if p is one of those posts I could get the name of the

I want to have Rails 1.1 + Rails 1.0 on the same PC and be able to load my script with a different version each time. Is it possible? -- Posted via http://www.ruby-forum.com/.

I have a name of an attribute and I need to get its value and set a new value for it: x1 = a.foo a.foo = x2 How do I do that if the name of the attribute ''foo'' is a var? I thought about doing this: attribute_name = ''foo'' x1 = a.attributes[attribute_name] a.attributes[attribute_name] = x2 but this is a bypass and I''m quite sure it would cause

Someone can help me? I tried several things and always don't converge # Model library(sem) dados40.cov <- cov(dados40,method="spearman") model.dados40 <- specify.model() F1 -> Item11, lam11, NA F1 -> Item31, lam31, NA F1 -> Item36, lam36, NA F1 -> Item54, lam54, NA F1 -> Item63, lam63, NA F1 -> Item65, lam55, NA F1 -> Item67, lam67, NA F1 ->

Hi All, Apologies if this has been answered somewhere else, but I have been searching for an answer all day and not been able to find one. I am trying to plot a path diagram for a CFA I have run, I have installed Rgraphviz and run the following: pathDiagram(cfa, min.rank='item1, item2, item3, item4, item5, item6, item7, item8, item9, item10, item11, item12', max.rank='SMP,

Hi, does anybody know of some plotting function or an easy way to generate "+" symbols with individually settable bar lengths? I tried just combining "|" and "-" as pch and setting the size via cex, but that doesn't really work since the two symbols have different default lengths. Is there a horizontal | or a longer "-" available? Thanks, Rainer

I''m trying to get the unit testing for a new project to use the wonderful :memory: database specification for SQLite. However, like many people before me, I can''t get the schema to import or have anything else useful. Initially, the error I get is: /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.1.0/lib/sqlite3/errors.rb:94:in `check'': cannot rollback - no transaction is

Hello everybody, yes I did check the installation medium (dvd), so that's not the problem. My system only contains components which are accepted by the redhat hardware compatibiliy list. But anaconda fails, announcing: You are trying to install on a machne which isn't supported by this release of CentOS-3 The error message stems from this part of anaconda code in packages.py: # this

Hi, I looked at the sources and figured out all about the P2M, M2P tables and mappings, Now I''m trying to figure out how dom0 virtual memory is implemented, and I have some questions. The platform I''m working on is x86 with Intel VT enabled. 1. Is dom0 virtual memory managed differently than the other domains? what about hvms? and domUs? 2. What tables are used to manage the

I am seeing a peculiar installation problem with the R installation files for Windows: R2.6.1 fails to install on MS-Vista with a file corruption issue. But, the same R2.6.1 exe does install OK on Windows ME. The same problem exists with R2.3.1: Fails to install on Windows Vista Succeeds install on Windows ME Succeeds install on Windows 2000 and Windows 98 so it cannot be the installation

Hi, I have a strange package installation problem after update to R 2.11.0 on Fedora Core 12. A colleague of mine with the very same Fedora and R versions doesn't have this problem, while logging on to his computer but installing from my settings and into my local library path also shows the problem, so it seems to be related to some of my environment settings. Installation of several

About a year and a half ago, someone answered a request on how to set up rsync so that the encryption was automatically setup (wish I knew more about the technical aspects). It has been in use for the time since then and it has been great. Now I have to replace the destination computer and setting up, what I call the encryption part, is the part I have forgotten how to do. This is the

? Tue, 21 May 2024 08:00:11 +0000 Dario Strbenac via R-devel <r-devel at r-project.org> ?????: > Would a less resource-intensive value, such as 1, be a safer default > CPU value for confint? Which confint() method do you have in mind? There is at least four of them by default in R, and many additional classes could make use of stats:::confint.default by implementing vcov(). >

Suppose I have a data frame like "dat" below. For some context, this is the format that represents student's taking a computer adaptive test. first.item is the first item that student was administered and then score.1 is the student's response to that item and so forth. item.pool <- paste("item", 1:10, sep = "") set.seed(54321) dat <- data.frame(id =

Hi I am trying to use the RSS classes from "rss/2.0" and everything works but I want to know what attributes and properties I can get at from each of the classes I am getting back. For example, the class has a "channel" which I can tell has a "title" attribute (because it works when I query it :) but I would really like a list of every attribute that is

Dear R Community, I?m relatively new in the field of R and I hope someone of you can help me to solve my nerv-racking problem. For my Master thesis I collected some behavioral data of fish using acoustic telemetry. The aim of the study is to compare two different groups of fish (coded as 0 and 1 which should be the dependent variable) based on their swimming activity, habitat choice, etc.

Dear R Community, I am happy to introduce the latest version 1.3-0 of the 'dclone' R package. The package provides low level functions for implementing maximum likelihood estimating procedures for complex models using data cloning and Bayesian Markov chain Monte Carlo methods with support for JAGS, WinBUGS and OpenBUGS. Data cloning is a global optimization approach and a variant of

Dear R Community, I am happy to introduce the latest version 1.3-0 of the 'dclone' R package. The package provides low level functions for implementing maximum likelihood estimating procedures for complex models using data cloning and Bayesian Markov chain Monte Carlo methods with support for JAGS, WinBUGS and OpenBUGS. Data cloning is a global optimization approach and a variant of

I''m studying the Agile Development with Rails book. In the chapter that first sets up the depot application (page 68), there is this bit of code from a view: <% for product in @products %> <tr> <% for column in Product.content_columns %> <td><%=h product.send(column.name) %></td> <% end %> etc... I am trying to absorb both Ruby and