hopsoft

# lib/tasks/db.rake
namespace :db do

  desc "Dumps the database to db/APP_NAME.dump"
  task :dump => :environment do
    cmd = nil
    with_config do |app, host, db, user|
      cmd = "pg_dump --host #{host} --username #{user} --verbose --clean --no-owner --no-acl --format=c #{db} > #{Rails.root}/db/#{app}.dump"
    end
    puts cmd

rodleviton

sudo -i
cd
apt-get install build-essential checkinstall && apt-get build-dep imagemagick -y
wget http://www.imagemagick.org/download/ImageMagick-6.8.7-7.tar.gz
tar xzvf ImageMagick-6.8.9-1.tar.gz
cd ImageMagick-6.8.9-1/
./configure --prefix=/opt/imagemagick-6.8 && make
checkinstall

codecaffeine

#!/usr/bin/env ruby

# Script to generate random images. Based on http://www.imagemagick.org/Usage/canvas/#random_blur

require 'optparse'

options = {}

optparse = OptionParser.new do |opts|

Integralist

Lambda: standard

# Creating a lambda
l = lambda { |name| "Hi #{name}!" }

# Executing the lambda
l.call("foo") # => Hi foo!

andytlr

Convert SVG polyline to path

Replace all instances of <polyline with <path and points=" with d="M.

 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="1000px" height="1000px" viewBox="0 0 1000 1000" enable-background="new 0 0 1000 1000" xml:space="preserve">
-<polyline fill="#FFFFFF" stroke="#000000" stroke-miterlimit="10" points="100.712,141.534 582.904,227.835 425.37,478.521
+

amolkhanorkar

======= Prolbem =================================================================================================================
I have installed : ruby-2.0.0,postgres-9.2 , now in rails app when I execute:

      rake db:create , command I get:

PG::InvalidParameterValue: ERROR:  new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII)
HINT:  Use the same encoding as in the template database, or use template0 as template.
: CREATE DATABASE "my_db_name" ENCODING = 'unicode'.......

      bin/rake:16:in `load'

joyrexus

Sans jQuery

Events

// jQuery
$(document).ready(function() {
  // code
})

victorlhlam

Rails 3.1 introduced force_ssl. You can add config.force_ssl = true in application.rb.

• Rails guide

By enabling force_ssl, Rails send a HSTS (HTTP Strict Transport Security) header which will expired in a year.

• Related discussion in Rails repository
• Rack SSL source code

So if you enabled force_ssl once, even you change the config value to false later, the browser you used to open you app before will still remember this website (using domain to identify) require to use HTTPS, and redirect you to HTTPS connection automatically. You may use chrome://net-internals/#hsts to check the domain list in Google Chrome.

onderaltintas

var degrees2meters = function(lon,lat) {
  var x = lon * 20037508.34 / 180;
  var y = Math.log(Math.tan((90 + lat) * Math.PI / 360)) / (Math.PI / 180);
  y = y * 20037508.34 / 180;
  return [x, y]
}
//test
lon= -77.035974
lat = 38.898717

zakhardage

<form action="/cart/add" method="post">
  {% if product.variants.size > 1 %}
		{% if product.options[0] %}
			{% assign used = '' %}
			<label for="select-one">{{ product.options[0] }}</label>
			<select id='select-one' onchange="letsDoThis()">
				{% for variant in product.variants %}
					{% unless used contains variant.option1 %}
						<option value="{{ variant.option1 }}">{{ variant.option1 }}</option>
						{% capture used %}{{ used }} {{ variant.option1 }}{% endcapture %}