similar to: order by newid()

My app works fine in development on my laptop but in production on my server I get "We''re sorry, but something went wrong. We''ve been notified about this issue and we''ll take a look at it shortly." I am using Rails 3, Ruby 1.8.7, Apache and passenger 2.2.15 I get the welcome aboard page in production if I just go to the domain name but as soon as I want data

this option is available in validation.. is there any equivalent when doing a query or should it be SQL dependent ( coded in the model ) ? thanks for feedback -- 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe

I'm using Rspec and FactoryGirl to create specs for multimodel paperclip attachments. From searching other questions, it seems like a single image attachment is more common. Car.rb class Car < ActiveRecord::Base has_many :uploads, dependent: :destroy validates :uploads, presence: { message: 'You must upload at least one image' }

I have two models (Car and Driver) and a combobox to select which driver belongs to which car. I want the combobox just show the objects that have not yet been associated. # vehicle belongs_to: driver # driver has_one: vehicle # simple_form # vehicle/_form.html.haml = f.association: driver, label_method: :name, value_method: :id How to ensure validation before saving, to avoid problems of

I have a application that it use view/layout/application.rhtml, in this file I have: <%= render_component :controller => ''car'', :action =>''index''%> But there is one problem, it display this problem: undefined method `render_component'' for #<#<Class:0xb67e6e48>:0xb67e5f34> How can I resolve this problem? -- You received this

I have an issue where I am getting a large number of records from the database and I cant afford to keep it in the memory due to performance issues. Therefore using the following would be ideal, User.find_each(:batch_size => 5000, :start => 2000) do |user| NewsLetter.weekly_deliver(user) end however, I would like to use find_by_sql since my query is user defined. Question is, is it

A find will make an array, right? Or is it a hash? Anyway, if I have several records in an array/hash, how can I find e.g. record with id 10 and it''s content? -- Posted via http://www.ruby-forum.com/. -- 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

I''m using the plugin will_paginate with a table of more than 100,000 records, i also do a join with other table. I''m wondering if will_pagination in my situation is an appropriate choice, or whether it is better to implement something ad-hoc? -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on

Rails 3.1.3 Hi. I''m a little confused with Devise and ActionMailer. It seems that Devise has its own way of sending mails through ActionMailer. Does it generate Mailer class when "rails g devise..." command is executed? Or do I need to do some special command in order to generate Mailer? I have certainly set up a devise User table but there is no Mailer class for it,

Just starting up with rails. I have a textfile with a lot of records in the form Name Description. I would like to put these into my database. What is the quickest and best way to do this assuming the database is already set up. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post

Hi, Using Rails 3.0.3 on Ubuntu 10. In my application controller I have a before filter which checks where or not a User has some comment records. If no comment records our found, a redirection is issued to the main page. All my rspec/cucumber tests passed. So I thought start the server and see what happens when I use Firefox (3.6) or Internet Explorer (1.7) Scenario: Firefox User navigates

Rails 2.3.2, Ruby 1.9.3 I want to get all records for one month from charges table. recs = Charge.where(["date >= ? and date < ?", t.beginning_of_month, t.next_month.beginning_of_month]) and this transforms into this query on PostgreSQL SELECT "charges".* FROM "charges" WHERE (date >= ''2012-03-31 22:00:00.000000'' and date <

I need to create certain number of UUId records(based on the selection of drop down) and save it in the database. Now I am generating only one unique id. Can this be done in the model in this way. Or do I need to write a helper file for that?? def generate_unique_token=(value) self.secret = Base64.encode64(UUIDTools::UUID.random_create)[0..8] end In my controller........... def create

Hello guys, I have these models class Farmer < ActiveRecord::Base has_many :cows end class Cow < ActiveRecord::Base set_table_name :cows belongs_to :farmer end ... graph = Farmer.find(x) # Retrieves four cows of x graph.cows[1].name = "Trottolina" graph.save while adding a new cow to collection works perfectly fine, ActiveRecord doesn''t

Hi, I have a DB with table TABLENAME, column COLUMN and an active resource client trying to connect to the DB. When i do Tablename.find(:all) => i get all the entries from the table But Tablename.exists?(:column => value) always returns false I verified that the above command works from rails console. Dont understand why it always returns false even when there are valid records. And in

Hi, I have a ActiveRecord::ReadOnlyRecord error when i update child attributes whereas when i create a new one it works fine. Someone had this error? Best, greg -- Posted via http://www.ruby-forum.com/. -- 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

Hi all i am following this like for basic paypal http://railscasts.com/episodes/141-paypal-basics and i got this error View: <%= link_to "Checkout", @cart.paypal_url() %> undefined method `paypal_url'' for nil:NilClass despite i have this code in my model called Card Cart Model: class Cart < ActiveRecord::Base def paypal_url(return_url) values = {

Hi I had a IDE netbeans now I have installed red car but after installing redcar my NETBEANS not working so I want to remove redcar from my local machine(ubuntu 10.10) when I put this in console: > sudo gem uninstall redcar I got WARNING: Invalid .gemspec format in ''/usr/lib/ruby/gems/1.8/specifications/redcar-0.13.gemspec'' ERROR: While executing gem ...

Is there a gem that will present things in a spreadsheet-like style? I tried searching via both Google and rubygems.org and found mainly things to import and export .xls[x] and Google Spreadsheets. There was also the Exercise gem, which had zero documentation about what it *does*, which doesn''t make me confident in using it. Why do I ask? I''ve made a little app

Hi. I would like to do code refactoring: @beers = [] Beer.all.each do |beer| unless @beers.find{|c| c.brand_id == beer.brand_id} @beers << beer end break if @beers.size > 29 end So I achieved this by writing scope (on PostgreSQL): scope :with_unique_brand, select("DISTINCT ON (beers.brand_id) beers.*") Using this scope alone is working