similar to: Help with many-to-many using :through

Hello, I get an error while retrieving records from the following model structure. Tables foods - id, food foodallergies - food_id, symptom_id, a few other columns symptoms - id, symptom Models class Food < ActiveRecord::Base has_many :foodallergies has_many :symptoms, :through => :foodallergies end class Symptom < ActiveRecord::Base has_many :foodallergies has_many :foods,

Hello list, Probably a newbie question but couldn''t find the answer in the archives. I am using the login_engine Plugin to implement the login functionality. I have a JournalEntry model that interacts with the journal_entries table. I would like to link the journal entries to the user who entered it. Essentially, it is a one to many relationship between the model User(from

Hello, Is it possible to tag multiple fields in a model using either acts_as_taggable plugin or gem? If it is not possible out of the box, can anyone provide pointers on how I would achieve something like that? Say I have a ''Food'' model which has ''spices'' and ''healthiness'' attributes. I want to be able to tag on both those fields. Is that

If I call .create on the param structure, are the parameters being passed to the create method automatically sanitized for me? e.g. Journalentry.create(param[:journalentry]) Do I have to worry about any malicious scripting making its way into the creation of the record? Thanks. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this

Hello all, Anyone have any suggestions on how I could do and display a diffed piece of text in a style similar to Writeboard (strikeouts etc.) Q1) Are there any ruby gems for diff? Q2) How would I represent the diffed text in styled HTML? If there are existing tools, any ideas on how I could write this? Thanks, Vaishal -------------- next part -------------- An HTML attachment was scrubbed...

After loading the RODBC package version 1.1-7, Ctrl-C changes its behaviour and is quitting R and returning to the (unix-)command prompt on the solaris2.8 platform here. Here's what happened before and after loading RODBC > for (i in 1:10^5) rnorm(10) ^C > library(RODBC) > for (i in 1:10^5) rnorm(10) ^C bash-3.00$ platform sparc-sun-solaris2.8 arch

I have been working on a small app that started with some scaffolding. Some of my actions still have the structure where the id''s of things are passed on the url for gets. Whats the best way to avoid the security problems that this creates? I am sure that there are many pages written on this topic but I guess I have been searching for the wrong things. Thanks Gareth -- Posted via

I am encountering a make error on an AIX 5.2 with R-2.3.0 and R-patched_2006-05-10 after successfully configuring them using gcc-4.1.0, gnu make, and the following configure options CC=/usr/local/bin/gcc F77=/usr/local/bin/gfortran CXX=/usr/local/bin/g++ MAIN_LDFLAGS=-Wl,-brtl SHLIB_LDFLAGS=-Wl,-G CFLAGS='-g -O' FFLAGS='-O' CXXFLAGS='-g -O' bash-3.00$ ./configure

I need help with (hopefully) just one more thing. I have been fussing with this for quite some time and have decided just to give up and ask! I want to match a column in a matrix to a vector. I found a "which" command that I thought would be helpful as it does the following: > g=c(1,5,3,2,7) > which(g==5) [1] 2 As the above gave which placement in the g vector corresponded to

So I''m trying to do that hot new thing with AJAXy forms: http://idiet.toasterwaffles.com/foods/list Here''s the relevant code in list.rhtml (for the form portion) <tbody> <%= render_collection_of_partials "list_stripes", @foods %> </tbody> <tfoot> <tr id="addFood"><%= form_remote_tag( :html =>

Using AIX 5.3 and gcc-4.2.1 for building R-2.7.1 with the following configure flags OBJECT_MODE=64 CC="gcc -maix64" CXX="g++ -maix64" F77="gfortran -maix64" FC="gfortran -maix64" CFLAGS="-g -O3" CXXFLAGS="-g -O3" FFLAGS="-g -O3" FCFLAGS="-g -O3" LDFLAGS="-L/$HOME/usr/local/lib/ppc64

Hi all, I have two controllers - "foods" and "receipes" which map to models. Each one will have multiple categories, but the categories are completely different for each one - they don''t share the same category. So they aren''t related at all. If I wanted to do this using resources, what is the best way to set this up? If I setup a categories controller and

Mangia a colori II! Keywords Population, health promotion/Public Theories, Methods & Perspectives Abstract An initiative of health-promotion to the expansion of the "instruments" able to assure the control to the population on their own level of health, to improve it through activity that partly concern to the sanitary system and partly to other sectors, with the use of internal

hi, hope u''r all having a good week ahead - does anyone know how to modify / change existing text in a db? with the code @foods = Food.find(:all) food_rows = @foods.collect(&:fruit) food_rows.each |r| r.gsub("really", "") end i get a good end result (if the data was Food.find(1).fruit = "we really need apples" Food.find(2).fruit = "we really

Why can it not find my object? What am i missing here? Here is my code: require ''rexml/document'' include REXML # classes to represent the objects and relationships in the xml file class Article attr_accessor :id, :post, :archive, :ntype, :head, :blurb, :body, :fblurb, :fimage, :att, :source, :copy, :brand end # the base parser class BaseXMLParser def initialize(filename)

Hello All, I have a 131072x132 matrix for which I need to compute a regular euclidean distance matrix, which I then need to transform and run agnes() on this transformed matrix. I am having trouble computing the distance matrix as it is fairly large and I am sure I have gone over the max. The specific error I am getting is: Error in vector("double", length) : negative length vectors

I am trying to get R-2.2.1 to pass make check on an AIX 5.2 at work (I know R-2.2.1 is not the latest release, but I encountered make errors in my attempts to install either R-2.3.0 or the R-patched_2006-05-10 on the version of AIX I am on. I will post those errors in a separate posting from this.) So far, configure and make finish without error for R-2.2.1 using gnu make, gcc-4.1.0, and

Hello to all, I recently downloaded R to my PC and am enjoying getting acquainted with it. Thank you to everyone involved in the R-project! I am interested in doing a log-linear analysis with R on a data set with dichotomous variables. There are 11 variables (columns) and around 1000 subjects (rows). How do I aggregate my data, i.e. how do I make a new dataset that includes the variable giving

Hi, folks, ###### food=c('fruit','fruit','fruit','drink','drink','drink') type=c('apple','apple','orange','water','soda','soda') value=c(2,3,1,5,7,6) data=data.frame(food,type,value) share=c((2+3)/(2+3+1),5/6,1/6,5/(5+7+6),13/18,13/18)

Per the request to test the latest tarball referenced below, I have built R on AIX 5.3. There is a memory issue, please see 3) below. 1) Build with --enable-BLAS-shlib option. Builds and passes "make check". 2) GNU libiconv was installed; R configured *without* the --without- iconv option. Builds and passes "make check." 3) Memory issue: a)