lucasdavila

<%= simple_form_for @product do |f| %>
  <%= f.simple_fields_for :attributes do |d| %>

    <% f.object.attributes.try(:each) do |key, value| %>
      <%= d.input key, :input_html => {:value => value } %>
    <% end %>

  <% end %>
<% end %>

cpjolicoeur

I'm hunting for the best solution on how to handle keeping large sets of DB records "sorted" in a performant manner.

Problem Description

Most of us have work on projects at some point where we have needed to have ordered lists of objects. Whether it be a to-do list sorted by priority, or a list of documents that a user can sort in whatever order they want.

A traditional approach for this on a Rails project is to use something like the acts_as_list gem, or something similar. These systems typically add some sort of "postion" or "sort order" column to each record, which is then used when querying out the records in a traditional order by position SQL query.

This approach seems to work fine for smaller datasets, but can be hard to manage on large data sets with hundreds (or thousands) of records needing to be sorted. Changing the sort position of even a single object will require updating every single record in the database that is in the same sort group. This requires potentially thousands of wri

dan-palmer

# check swap usage
sysctl vm.swapusage

# disable encrypted swap - SNOW LEOPARD
sudo defaults write /Library/Preferences/com.apple.virtualMemory UseEncryptedSwap -boolean no

# disable encrypted swap - LION
sudo defaults write /Library/Preferences/com.apple.virtualMemory DisableEncryptedSwap -boolean yes

# disable swap

mikhailov

# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies.
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
#
# Deployment structure
#
# SERVER:
#  /etc/init.d/nginx                             (1. nginx)
#  /home/app/public_html/app_production/current  (Capistrano directory)
#

chebyte

require 'sendgrid_webapi'
require "fakeweb"
require 'vcr'

VCR.configure do |c|
  c.cassette_library_dir = 'spec/cassettes'
  c.hook_into :fakeweb
  c.configure_rspec_metadata!
end

rtgibbons

#!/bin/bash

unload() {
	kextstat | grep "org.virtualbox.kext.VBoxUSB" > /dev/null 2>&1 && sudo kextunload -b org.virtualbox.kext.VBoxUSB
	kextstat | grep "org.virtualbox.kext.VBoxNetFlt" > /dev/null 2>&1 && sudo kextunload -b org.virtualbox.kext.VBoxNetFlt
	kextstat | grep "org.virtualbox.kext.VBoxNetAdp" > /dev/null 2>&1 && sudo kextunload -b org.virtualbox.kext.VBoxNetAdp
	kextstat | grep "org.virtualbox.kext.VBoxDrv" > /dev/null 2>&1 && sudo kextunload -b org.virtualbox.kext.VBoxDrv
}

load() {

lucasfais

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

tomz

require 'rubygems'
require 'json'
require 'net/http'

# Sentiments on tweets
# http://data.tweetsentiments.com:8080/api/search.json?topic=<topic to analyze>
url = "http://data.tweetsentiments.com:8080/api/analyze.json?q=i%20am%20happy"
resp = Net::HTTP.get_response(URI.parse(url))
data = resp.body
result = JSON.parse(data)

josevalim

# In your test_helper.rb
class ActiveRecord::Base
  mattr_accessor :shared_connection
  @@shared_connection = nil

  def self.connection
    @@shared_connection || retrieve_connection
  end
end