Converting an array of objects to ActiveRecord::Relation
I have an array of objects, let's call it an Indicator. I want to run Indicator class methods (those of the def self.subjects variety, scopes, etc) on this array. The only way I know to run class methods on a group of objects is to have them be an ActiveRecord::Relation. So I end up resorting to adding a to_indicators method to Array. def to_indicators # TODO: Make this less terrible. Indicator.wh
Rails ActiveRecord date between
I need to query comments made in one day. The field is part of the standard timestamps, is created_at. The selected date is coming from a date_select. How can I use ActiveRecord to do that? I need something like: "SELECT * FROM comments WHERE created_at BETWEEN '2010-02-03 00:00:00' AND '2010-02-03 23:59:59'"
Ruby on Rails: How do you explicitly define plural names and singular names in Rails?
For example, I'm using "Bonus" as my model, so I'd expect "bonuses" to be the plural form and "bonus" to be the singular form. However, in Ruby, this results in: "bonus".pluralize # bonus "bonuses".singularize # bonuse So, when I do a "has_many :bonuses", for example, it doesn't use the Bonus.rb model (since Ruby expects a Bonuse.rb model instead). Is there a way to correct that in Ruby on Rails s
`require': no such file to load -- mkmf (LoadError)
I was trying to install rails on Ubuntu Natty Narwhal 11.04, using ruby1.9.1. I installed ruby using apt-get install ruby1.9.1-full which contains the dev package. I googled the error and all have suggested I install the 1.9.1-dev which I already have. Building native extensions. This could take a while... ERROR: Error installing rails: ERROR: Failed to build gem native extension. /usr/bin/ruby1.8
Deploy jruby project to tomcat in windows platform
I am newbie in the ruby world, after doing some research I can generate a demo rails application and testing on the webrick server But I have encounter the problem when I start to deploy with tomcat I use warbler to generate war file for deployment successfully without error Copy the war under the folder of webapps on Tomcat 7.0 start the server and try to run on the browser I found that assets fi
Error: Incompatible character encodings: UTF-8 and ASCII-8BIT
I got the error incompatible character encodings: UTF-8 and ASCII-8BIT, when the view found in the database some characters like: ñ, á, é, etc. My enviroment is: Rails: 3.2.5 Ruby: 1.9.4p194 Database: Oracle 10g (10.2.0.1.0) I can save this characters in the database, using Toad. I tried to write this, in the first line of my view: <% # encoding: utf-8 %> In enviroment.erb Encoding.default_externa
Access current_user in model
I have 3 tables items (columns are: name , type) history(columns are: date, username, item_id) user(username, password) When a user say "ABC" logs in and creates a new item, a history record gets created with the following after_create filter. How to assign this username ‘ABC’ to the username field in history table through this filter. class Item < ActiveRecord::Base has_many :histories after_crea
Installing Nokogiri on OSX 10.10 Yosemite
I recently upgrade to the 10.10 Yosemite beta, but I'm having trouble getting Nokogiri installed. I'm using RVM and Ruby 1.9.3. I've also followed the steps here and tried following the instructions on Nokogiri's homepage. I've installed libxml2 (2.9.1) and libxslt (1.1.28) via homebrew, and have tried using the command line tools from both my Xcode 5 install and Xcode 6 beta. gem install nokogiri
ActionView::Template::Error: Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true
My ruby on rails action mailer runs all good in development environment, but in production environment, it keeps throw: ActionView::Template::Error: Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true My development config is config.action_mailer.delivery_method = :smtp config.action_mailer.smtp_settings = { :port => xxx, :address
Excluding files from assets:precompile in rails
I use codekit for writing less which it then converts to css automatically. I don't want rails to convert my less files to css, I rather codekit do it. if I precompile the assets via rake assets:precompile I get rake aborted! cannot load such file -- less How do I exclude a specific folder/file types from precompiling? (all my less files are in app/assets/stylesheets/less and the css (which I do w
Rails create or update magic?
Rails 6 Rails 6 added an upsert and upsert_all methods that deliver this functionality. Model.upsert(column_name: value) [upsert] It does not instantiate any models nor does it trigger Active Record callbacks or validations. Rails 5, 4, and 3 Not if you are looking for an "upsert" (where the database executes an update or an insert statement in the same operation) type of statement. Out of the box
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