similar to: newbie: access model inside a model

Hi Everybody, I''m playing around with the engines created by James Adam and I bumped into the following. I would like the rake bootstrap command to use the testing database and I just know there''s an easy way to do so. I could have just copied the dev db''s to the test db''s but I think I''m missing something fundamental here. Hints are very welcome.

I am having a problem with two models that each have a HABTM relationship to the other. For example: CREATE TABLE people (id INT, name TEXT); CREATE TABLE teams (id INT, name TEXT); CREATE TABLE people_teams (person_id INT, team_id INT); The person model has: has_and_belongs_to_many :teams And the team model has: has_and_belongs_to_many :people The trouble comes when trying to destroy

The double quotes are required by SQL if a name is not of the form letter-followed-by-any-number-of-letters-or-numbers or if the name is a SQL keyword like 'where' or 'select'. If you are doing this from a function, you may as well quote all the names. -Bill On Fri, Oct 2, 2020 at 6:18 PM Philip <herd_dog at cox.net> wrote: > The \?2B\? worked. Have no idea why. Can

I?m trying to pull data from one table (batting) in the Lahman Baseball database. Notice X2B for doubles and X3B for triples ? fourth and fifth from the right. The dbGetQuery function runs fine when I leave there two out but I get error messages (in red) when I include 2B/3B or X2B/X3B. Can anyone give me some direction? Thanks, Philip Heinrich

Hi Philip, You've probably realized by now that R doesn't like column names that start with a number. If you try to access an R-dataframe column named 2B or 3B with the familiar "$" notation, you'll get an error: > library(DBI) > library(RSQLite) > con2 <- dbConnect(SQLite(), "~/R_Dir/lahmansbaseballdb.sqlite") > Hack12Batting <-

This is really a feature of SQL, not R. SQL requires that you double quote column names that start with numbers, include spaces, etc., or that are SQL key words. E.g., > d <- data.frame(Order=c("sit","stay","heel"), Where=c("here","there","there"), From=c("me","me","you")) >

the below... class User < ActiveRecord::Base has_and_belongs_to_many :teams class Team < ActiveRecord::Base has_and_belongs_to_many :users has_one :captain, :class_name => ''User'' produces the error... Mysql::Error: Unknown column ''users.team_id'' in ''where clause'': SELECT * FROM users WHERE (users.team_id = 1) LIMIT 1 i

Hi all, I''m wrestling with the scoped acces plugin to generate object access controll, but the :create params don''t seem to get through. :find works great. This is the code around_filter ScopedAccess::Filter.new(Service, :service_filter) layout "settings" protected def service_filter { :find => {:conditions => ["business_id =

People, I want to design a historical sports db for my old school. I think at the moment it should be like: A year has many teams A team has many students A student has one lastname, firstname and middlename but a student can also have many teams (eg summer/winter abd over a number of years) . . Is there a problem with this? Doesn''t it just mean that there will be a student table

Does this work with rails 1.0 ? I saw that people said it failed with rails 14.1, which practically identical. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060125/5da24694/attachment.html

Here''s the problem I have the following models User - is a person Team - is a team Wherenote - snipet of info about a user''s whereabouts on a certain day Team has_and_belongs_to_many :users User has_and_belongs_to_many :teams has_many :wherenotes Wherenote belongs_to :user each Wherenote has a note_date On one page I want to pull back all the Users from a particular Team

Hi, I''m working on an app - my first Rails - and am looking for some suggestions on the best way (or good way) to set up my models / DB. In general there are teams and matches; a team will participate in multiple matches, and in each match there will be 6 teams - 3 vs. 3. I''m going to want to be able, for a particular team, pull up all matches for that team, to display a

I have the following tables teams id :string name :string and matches id: home_team :team_id visitor_team :team_id how can I reflect that kind of relationship in a RoR model? thanks and keep up the good work.

I need to find out how I can create and save a large dataset to a table based on multiple returned arrays from a Rake task. Here is my example using just two arrays (there are 14 in this particular rake task): update_tsos_offense = TsosOffense.new to_team_id, to_ppcs = update_tsos_offense.calculate_tsos(TotalOffense, "ydspgm", "desc") ro_team_id, ro_ppcs =

Hi, I''ve got my little app working pretty well. I''m using pretty much the model and table layout from my previous thread, as suggested by Bill Katz: <http://www.ruby-forum.com/topic/52506#26260> I have the Create page working and a delete Match page working, which along with the appropriate record in the Matches table, removes the linked items in the competitions table.

I just have a few questions about join tables. From my understanding the following applies (correct me if I''m wrong): 1.Join tables are always named with the names of the two associated tables, in alphabetical order, separated by an underscore. 2.The foreign key fields are named with the name of the table they are referencing, with _id appended. 3.The foreign key is referencing a

Bad rails day for Matt- In a migration, for a habtm: create_table :teams_users do |t| t.column :team_id, :integer t.column :user_id, :integer end Ok, fine. In a controller (well really a migration script): @user.teams << Team.find( 3 ) And the SQL pumped at my server is: INSERT INTO teams_users (`team_id`, `id`, `user_id`) VALUES (3, 3, 34) Which

Hi all, I have a question about filtering on a variable. If I have the following code in my controller to select a list of users > @allusers = User.find(:all, > :conditions => [''team_id = ?'', @params["id"], > :order => ''created_at'') Is there an easy way to find out all users who

This is probably simple, but I just can't see it... I want to calculate the R^2s for a series of linear models where each term is dropped in turn. I can get the RSS from drop1(), and the r.squared from summary() for a given model, but don't know how to use the result of drop1() to get the r.squared for each model with one term dropped. Working example: library(vcd) # for

Hi,I am using the amazing package 'plyr". I have one problem. I would appreciate help to fix the following error: Thanks. ______________________________ > library(plyr) > data(baseball) > summarise(baseball, + duration = max(year) - min(year), + nteams = length(unique(team))) Error: could not find function "summarise" > ddply(baseball, "id", summarise, +