similar to: Noob Question about databases in rails

Greetings, I appreciate the help from here as I seem to be asking the noob questions a lot, but what is a good way to deal with navigation pulled from a database? I have this in my view: <% @nav_buttons.each do |nav_button| %> <li><a href="#" class="nav"><%=h nav_button.name %></a></li> <% end %> this in my controller def

To start out I''ll say that this is the first thing that I''ve ever built that''s been intended to programmatically send email. I''m looking at examples in AWR and also on the wiki. I feel that I sort of have things set up right but I''m getting an error I can''t grok: Net::SMTPFatalError in Home#email_list 550 5.7.1 Unable to relay for

I''m doing some searching for deployment options, and I feel like I''m getting buried in a lot of new technology and assumptions that I know all that it''s dependent on. In the past I''ve done small things with PHP where I just dump the app in a folder and everything works out of the box. I found that everyone is using Capistrano, which relies on Subversion

I''ve setup two models, 1 and 2, that are associated by has_and_belongs_to_many. I''m trying to get an attribute from model_1 to use in a method in model_2. When I use the code below, I get an error saying ''undefined method model_1_id''. What am I missing? Thanks! Model_2.rb Class Model_2 < ActiveRecord::Base ... has_and_belongs_to_many :model_1 def

Hi All, I''m trying to wrap me head around how I could use Rails for a particular app that I''ll be designing that involves multiple legacy databases that I''ll need to query and update. Basically, it''s a financial services type of app where a customer will log in and be able to check/manage the varied types of accounts that they have. Sounds simple enough

I think this is a fairly easy question done several times in several languages, but on a traditional ''tab'' based navigation webpage, what''s the best way to handle the active state? I am using this in my view: <% for category in @categories %> <% if the condition is met to make this the active tab %> <li><a id=''active''

Dear R-helpers, I try to perform glm's with negative binomial distributed data. So I use the MASS library and the commands: model_1 = glm.nb(response ~ y1 + y2 + ...+ yi, data = data.frame) and predict(model_1, newdata = data.frame) So far, I think everything should be ok. But when I want to perform a glm with a subset of the data, I run into an error message as soon as I want to predict

Greetings, I''ve got a Rimu account and I''m trying to config things for a deployment. I''ve now got things to where I''m atleast getting a nice error page you can see at: http://www.juiceboxmedia.ca/public/ the username and password I have connects to this database fine with phpmyadmin from my plesk control panel, so as far as I know MySQL on it''s

Dear all, I am trying to evaluate the optimisation behaviour of a function. Originally I have optimised a model with real data and got a set of parameters. Now I am creating simulated data sets based on these estimates. With these simulations I am estimating the parameters again to see how variable the estimation is. To this end I have written a loop which should generate a new simulated data

Dear R-helpers, let us assume, that I have the following dataset: a <- rnbinom(200, 1, 0.5) b <- (1:200) c <- (30:229) d <- rep(c("q", "r", "s", "t"), rep(50,4)) data_frame <- data.frame(a,b,c,d) In a first step I run a glm.nb (full code is given at the end of this mail) and want to predict my response variable a. In a second step, I would

To whom it may concern: I have a question about how to appropriately conduct an lmer analysis for negative binomially distributed data. I am using R 2.2.1 on a windows machine. I am trying to conduct an analysis using lmer (for non-normally distributed data and both random and fixed effects) for negative binomially distributed data. To do this, I have been using maximum likelihood,

See my screenshot of the command here. http://a.imagehost.org/0843/mysqladmin.png When I type the following: mysqladmin create <database_name> --user=root --password=xxxxxxxx Is my command executed simply by pressing "Enter" after the command? Am I missing some syntax? If the command has been executed , what directory can I find this database? How does this relate to MySQL

this seems so stupid, I keep thinking I''ve dealt with this before but I have this code <h1>Portraits</h1> <% if @image.portrait == 1 %> <%= image_tag(url_for_file_column ''image'', ''file'', ''thumb'') %> <% else %> <h1>Landscapes</h1> <%= image_tag(url_for_file_column

Hi, I wanted to covert all my erb over to haml, but I use HTML5 tags like nav, section, article, etc. Any idea if this is supported by haml? Checked out their site, nothing mentioned there or did I miss something. Sorry noob here. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to

Dear R helpers, I have the following model model_1<-glm(y~A+B+C+E+A:D,contrasts=list(D=contrasts_D),data=mydata,na.action=na.omit) with: options(contrasts=c("contr.sum", "contr.poly")) A,B and E are 2-levels factor, C is covariate, D is 20 levels factor with 10 in relation with the first levels of factor A, the other in relation with the second levels of factor A

Hi R users, The nlme library enabled several alternate error structures useful for longitudinal or repeated-measures data. For example, a continuous AR(1) process: model_2 = update(model_1, correlation = corCAR1(form = ~ time | subject)) Does anybody know if this is available in lme4? Thank you Ben -- View this message in context:

Greetings, I''m in the throws of deploying an app on site5, and I''m getting strange errors. I think I might need to understand how error_messages_for works. I get a pretty standard looking error: " You have a nil object when you didn''t expect it! You might have expected an instance of ActiveRecord::Base. The error occured while evaluating nil.errors Extracted

Hi, total Noob here. I have a rails server set up and running. I''m working my way through the "agile" book. I see that all of the examples show URL''s that explicitly call for port 3000. How would one go about creating a ruby app that is engaged with a "normal" URL with no port number in it? That is apparently the default port for webrick to start up on

How do I iterate through the pseudo-template list class containing wxMenuItem pointers. Am still a bit of a Ruby/wxRuby noob. Currently have this: pp mymenu.get_menu_items() which prints: #<SWIG::TYPE_p_wxMenuItemList:0x4634fa8> However when I try to do: mymenu.get_menu_items().each {|key| ...} it tells me there is no each method for this class (SWIG::TYPE_p_wxMenuItemList)

Hi, How can an xts object be subset using a date in a variable? E.g. in below, what is the right syntax for Q to get the same value as P? Obviously the syntax shown below doesnt work... V is an xts object. d = "2007-01-01" P <- V['2007-01-01/'] Q <- V['d/'] Thanks, J -- View this message in context: