similar to: RoR - getting started with database relations

can someone help me with this i have a table cars ( id int model_id int make_id int color_id int description text constraint fk_cars_carmake foreign key(make_id) references carmakes(id), constraint fk_cars_carmodel foreign key(model_id) references carmodels(id), constraint fk_cars_color foreign key(color_id) references colors(id) ) carmakes ( id int carmake varchar ) carmodels ( id

I have encountered a problem with faceted bar plots. I have tried to create something like the example explained in the ggplot2 book (see pp. 126-128): library(ggplot2) mpg4 <- subset(mpg, manufacturer %in% c("audi", "volkswagen", "jeep")) mpg4$manufacturer <- as.character(mpg4$manufacturer) mpg4$model <- as.character(mpg4$model) base <-

Hello, in my database i have tables models,marques,cars. I wrote fixtures for models f1: id: 1 marque_id: 1 name: 100 NX f2: id: 2 marque_id: 1 name: 200 SX f3: id: 3 marque_id: 1 name: Almera f4: id: 4 marque_id: 1 name: Patrol f5: id: 5 marque_id: 1 name: Primera f6: id: 6 marque_id: 2 name: CLK f7: id: 7 marque_id: 2 name: CLS f8: id: 8 marque_id:

Hi, This topic has been discussed before e.g: <QUOTE> On 2008-08-07, at 1143, Kacper Wysocki wrote: The problem is that the configuration file specifies only one certificate file for dovecot, which means only one Common Name, which means one cannot provide one server cert that will match mail.foo.com AND mail.bar.com, and either ma... at foo.com or bo... at bar.com will get a

I have two models: assets and makes. Make has many assets and an asset belongs to one make. I am calling this part of my asset controller from a search form with the parameters "search" (search term) and "field" (database field heading) which then renders a partial with the search results on it. ######################################################## if

hi I need help with list object. I have a list object > a <- c('apple','orange','grape') > b <- c('car','truck','jeep') > c <- list(a,b) > names(c) <- c('fruit','vehicle') > c $fruit [1] "apple" "orange" "grape" $vehicle [1] "car" "truck"

# Proposal Provide a built-in mechanism for obtaining an identifier for the current R session, e.g. > Sys.info()[["session_uuid"]] [1] "4258db4d-d4fb-46b3-a214-8c762b99a443" The identifier should be "unique" in the sense that the probability for two R sessions(*) having the same identifier should be extremely small. There's no need for reproducibility, i.e.

Hi! File_column plugin saves uploaded files to "public/model/image/model_id/filename", if i understand it correctly. Does it mean that it creates new folder for every image? I have product (model) that has_many images (model). Is it possible to use (or modify) this plugin that it would save my images to different folder, so the id of the model_id part would be id of the product

Sorry, another newbie question :-( I loaded a data set with 10 rows and 30 columns. The first column is characters for names of car manufacturers: Jeep Nissan Toyota1 Toyota2 Etc. How can I replace "Toyota2" with "Scion"? Thanks again [[alternative HTML version deleted]]

I have split my appliction into 2 folders - public and restricted areas: "site" and "admin" Now, in "site" i have a "search" controller with the "results" action. I want to make a link that will keep all the parameters of the link <%= link_to ''link'', params %> However, instead of something like:

Hello all and thank you for reading this message. I am new to RoR, and ruby too, but i am quite excited about it. I am developing a RoR project and with active record associations in the following manner # Tables (all tables have only one record) CREATE TABLE `webcars_development`.`cars` ( `id` int(11) NOT NULL auto_increment, `model_id` int(11) NOT NULL default ''0'',

I have a multitable database with an observer logging changes into a datachange table. The create method inserts the data into the data change table, updates my model, and then trys to load from the datachange table. When it does this it WHERE clause that is generated for me is looking for a column model_id which I dont have. I don''t want to even have a field because this table will be

Hello, I am quite a newbie to RoR, I hope you maybe able to help. I have a collection_select in a _form.rhtml: "collection_select(:assets, :model_id, @models, :id, :model_ref,options={:prompt => ''- Select a model -''})" As you see my drop down menu will show the model_ref column. 1) Is it possible to have more than one column. For example I would like to

Jean-Marc Valin skrev: > Ghost Wolf a ?crit : >> Hello Mailing List, >> I am a Speex supporter and user that would really like to know how much >> memory Speex uses to decode a 8kHz, 16kHz and 32kHz (primarily the 8kHz) >> and is it possible to use a 1kBytes of RAM to decode a 8kHz stream? (I >> was thinking of the possibility of using a ATmega168 to decode Speex)

I have the following: @lot = Lot.find(params[:id]) part_nums = Part.all(:conditions => ["id <> ?", @lot.part.id]) I guess I should mention that Lot :belongs_to => :part I was looking at the log following the execution of these two statements and I saw something like this: Lot Load (0.4ms) SELECT * FROM "lots" WHERE ("lots"."id" = 13) Part

Hello, I am hoping you can help me with a question concerning kmeans clustering in R. I am working with the following data-set (abbreviated): BMW Ford Infiniti Jeep Lexus Chrysler Mercedes Saab Porsche Volvo [1,] 6 8 2 8 4 5 4 4 7 7 [2,] 8 7 4 6 4 1 6 7 8 5 [3,] 8 2 4

Im trying to figure out how to get dovecot to deliver to my mail_location (example: /opt/imapdata/j/jeff/INBOX/inbox) AND work with squirrelmail. Ive worked on this for hours reading the docs etc with no luck so far. I get dovecot-lda to deliver to: /opt/imapdata/j/jeff/INBOX/inbox but when I use squirrelmail, I see the following in the log: dovecot: imap(jeff): Debug: Effective uid=1006,

Hello- Sorry if this is a noob question, but I cant seem to get my password_query to work with dovecot + mysql. Im using 'Password verification by SQL server' at: http://wiki2.dovecot.org/AuthDatabase/SQL trying to modify it to work with my encrypted passwords in the DB. Im using the following which isnt working: password_query = SELECT NULL AS password, \ 'Y' as

Sorry to ask such a basic question, but I finally got some major hurdles working for imaps on port 993 and Im getting the following when I try to connect from my iphone: imap-login: Disconnected (no auth attempts in 60 secs): user=<>, rip=192.168.1.1, lip=192.168.1.22, TLS handshaking: Disconnected Im using SQL and SSL over 993. I cant seem to find where my user comes from that its blank?

ActiveRecord supports composed_of for value objects which is fantastic but one thing that it doesn''t seem to support (or at least I am unable to find any documentation for) validation of the value objects. For example, given the following: class Message < ActiveRecord::Base composed_of :sender, :class_name => ''EmailAddress'' composed_of :recipient,