similar to: Keeping the queries down...

hi, I have a problem. The R shows that Error in 1/ue : non-numeric argument to binary operator. Here is the code: # simulation of tempered stable processes by compound Poisson approximation tsp<-function(n,e,a,c,lema){ x<-numeric(n) for (i in 1:n){ repeat{ w<-runif(1) v<-runif(1) x<-e*(w^(-1/a)) fex<-function(x1){ if (x1>=e) {a1<-a*(e^(-a))/(x^a-1)}}

> version _ platform i686-pc-linux-gnu arch i686 os linux-gnu system i686, linux-gnu status major 1 minor 7.1 year 2003 month 06 day 16 language R Bug: integrate(f,lower,upper,extra_args) where f <- function(x,extra_args) { body } integrate doesn't pass the extra arguments when calling f. As a first check of this finding I integrated dnorm from

Hi folks, when I try to do something like: define railsproject($name, $uid, $gid, $userpass, $sqlpass) { mysql_database { "$name_staging": ensure => present } mysql_database { "$name_production": ensure => present} ....more stuff... } I get: Puppet::Parser::AST::Resource failed with error ArgumentError: Duplicate definition: Mysql_database[] is already

I was able to create a has_and_belongs_to_many relationship for my app, but now I''m not too sure how to write queries for it. Basically, I have a table ''courses'' that has_and_belongs_to_many ''categories'' and vice versa So I''m trying to figure out how I would find only the courses that belong to a category that I specify. Let''s

I need to setup something for a group of CAD guys to provide a web interface for clients/customers to send files to them. I was hoping to have an interface where the customer would be given a logon and it would email a link to the employee upon his successful upload. This would require an internal facing site to provision a slot to give to a customer. Anyone know of a project like this so I

Hello, I upgraded my application from Rails 2 to Rails 3 and ran into a problem. In rails 2 I could use the english name of the record to find it like: Page.find_by_name("Welcome") even though the user chose German as the language (which of course showed the German welcome page. Eversince I switched to Rails 3 (default_locale still :en) I can''t find anything by giving the

Hi I am having issues with getting my pretty urls to work. routes.rb: map.connect '':user'' , :controller => ''front'' , :action => ''list'' , :filter => ''user'' front_controller.rb: def list @advert_pages, @adverts = paginate :adverts, :per_page => 10 @user =

Hi Community.... I''m new in this game, so this might be a easy question, but I have done my google, without result, so I will try this.... I''m learning ROR, and I''m using Patrick Lens ''Ruby on Rails'' book. (This is written for ror 1.x - and I''m using NetBeans 6.1 - ror 2.x - this might be the problem...) But... I have made this

Hi I am new to ruby and trying to obtain the user name in the login index.rhtml where I could display "You have logged in [user name]" How could I do this? I have been trying different options after reading the ruby manual but still throw an error. please help -- Posted via http://www.ruby-forum.com/.

Hi, Let''s say I have an ActiveRecord::Base class and I want to be able to call a method on an Array of these items. For instance, perhaps there''s a class called Country and another called business, and I''d like to be able to do something like great_white_north = Country.find_by_name(''Canada'') canuck_enterprises = great_white_north.businesses

Hi, While viewing part of a long list of records, the user may want to do a Find of a specific record (for example, find_by_name). The found record is then displayed using the list view. I''ve searched the wiki and couldn''t find a sample or information that will help directly in implementing this function. Any pointers? Thanks! gk -- Posted via http://www.ruby-forum.com/.

I''m sure this has been asked before but a quick search on the web didn''t give me any hints.. I''d like to do this: @person = Person.find_by_name throw_page_not_found unless @person Anybody know how to do this, do I have to manually tinker with the response object? -- Posted via http://www.ruby-forum.com/.

I''d like to always add a condition to any version of "find" (e.g. Thing.find(), Thing.find_by_name(), Thing.find_by_whatever) so that in addition to whatever conditions are set, an additional condition is set :conditions=>"user_id=#{current_user.id}" I''d like to make sure that a user only sees/edits/creates entries in the database that have the user_id

Hi, I have a def in my controller see below where i want to find the page object based on a parameter value and then use the page_id to then find all the contents that belong to that page in the same method. Controller def aboutus @page = Page.find_by_name(params[''About Us'']) @contents = Content.find(:all, :conditions => "page_id = #{@page.id}") end

This is more of a design issue I''m wrestling with, and was wondering what other people are doing. I have a products table with status values of In Stock, Out of Stork or Discontinued. This is unlikely to change any time soon. Approach A, is to have thses actual values in the status column, at least the meaning is very apparent, yet querying for products with a specific status could

I am trying to upgrate rails from 3.0 to 3.1, while updating rails version I am getting following error rake aborted! undefined method `sanitize_limit'' for #<ActiveRecord::Relation:0x2aaaad35d720> /some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:460:in `method_missing''

class User end class Agent < User end script/console production User.find_by_name ''john'' SELECT "people".* FROM "people" WHERE ((("people"."type" = ''User'' OR "people"."type" = ''Manager'') OR "people"."type" = ''Agent'')) AND

I have a model layer containing Movie, Person, Role, and RoleType, making it possible to express facts such as "Clint Easterbunny is director of the movie Gran Milano". The relevant model and associations look like this class Movie < ActiveRecord::Base has_many :roles, :include => :role_type, :dependent => :destroy has_many :participants, :through => :roles, :source

I have a working Rails app with several related tables, but can''t find an answer to this question in the Dave Thomas Rails book. Imagine for example: table departments with columns: id, department_name table employees with columns: id, department_id, employee_name and of course the employees table has a constraint foreign key (department_id) references departments(id) So this is

I''m attempting to wrestle an old DB into Rails. This relationship is giving me trouble: class Show < AR::Base has_many :segments end class Segment < AR::Base belongs_to :show has_one :media #this has no PK/FK relation end A Segment is "linked" to Media by Media.name, which is the result of concatenating Segment.name and Segment.part. As I said there are is no