Get flash to fully experience Pearltrees
Nov 22 2009 It's crazy how little documentation there is on using selects (drop down lists) inside form-helpers in Rails. So, it can get quite confusing when it comes to using the different select helpers; select, select_tag and collection_select. In order to address this inadequate documentation and examples, I thought I would post here, some of the differnces between them with some examples so you can choose for yourself, the best one to use. <select name="gender"> <option value="1">Male</option> <option value="2">Female</option> </select>
RMagick on Ruby 1.9.1 (i386-mingw32) Work !!! Ispirate from : installing rmagick with mingw and ruby 1.9 and http://groups.google.com/group/rubyinstaller/browse_thread/thread/c837c4438d91208b but , on my laptop don’t work…. With Windows 7 work well: Step 1: DOWNLOAD Step 2: Install Step 3: Set Enviroment variable
Even though The Bastards Book of Ruby was going to just be a list of programming projects and snippets, this section is the least complete and consistent. Some portions have been written before I had decided to write all the other sections, so they contain thorough step-by-step instructions. Other portions – because I assume you've gone through the previous sections, or just out of laziness – do little more than describe the point of the code. Though many of the Fundamental and Supplementary chapters contain useful code examples, the Projects section attempts to walk through not just the code for specific situations, but the reasons behind exploring a dataset and the possible avenues of analyses and investigation. The code is a little more complex – and, at times, obtuse – but is meant to be readable by not-yet accomplished programmers.
This webcast explores MongoDB in the Ruby ecosystem. If you're using MongoDB with Ruby, you should first know a few things about the Ruby driver. So in the first part of the webcast, we'll provide an overview of the driver, show how to use it with replica sets, and cover some common gotchas. We'll talk about some of the advantages of using JRuby with MongoDB and describe the Ruby driver support for that platform. And finally, we'll look at the most popular object mappers in Ruby, adumbrate their respective features, and describe just what to consider before you start using one.
Heroku makes it easy to collaborate with others. Collaborating allows you to share access to your source code, make any changes and deploy a new version of the application quickly and easily. This articles shows how new collaborators can get started. Next you should clone the app locally.
This Guide is based on Rails 3.2. Some of the code shown here will not work in earlier versions of Rails. 1 Guide Assumptions This guide is designed for beginners who want to get started with a Rails application from scratch. It does not assume that you have any prior experience with Rails.
Read This Paragraph At my local Barnes and Noble, there is a huge wall of Java books just waiting to tip over and crush me one day. And one day it will.
Ahhhh, flow control. This is where it all comes together. Even though this chapter is shorter and easier than the methods chapter, it will open up a whole world of programming possibilities. After this chapter, we'll be able to write truly interactive programs; in the past we have made programs which different things depending on your keyboard input, but after this chapter they will actually different things, too. But before we can do that, we need to be able to compare the objects in our programs.
str % arg → new_str click to toggle source Format—Uses str as a format specification, and returns the result of applying it to arg . If the format specification contains more than one substitution, then arg must be an Array or Hash containing the values to be substituted. See Kernel::sprintf for details of the format string.
Ruby is a programming language from Japan (available at ruby-lang.org ) which is revolutionizing the web. The beauty of Ruby is found in its balance between simplicity and power. Try out Ruby code in the prompt on the right. In addition to Ruby's built-in methods, the following commands are available:
Getting started with Heroku This guest post is by Ben Scofield , who is Heroku’s developer advocate, responsible for listening to the tens of thousands of developers deploying their Ruby applications to the cloud. He’s spoken at many conferences around the world, and in 2010 became the co-chair for RailsConf. Introduction
Learning Rails the Zombie Way If you're new to Rails and want to give it a try, then head over to RailsForZombies.org . Rails for Zombies is a free online course that provides you five labs, each with a short video followed by a series of exercises where you get to code Rails immediately in your browser. If you're interested in the history of Rails, we also still have the screencasts made for Ruby on Rails 2 , Ruby on Rails 0.5 and for Ruby on Rails 1.0 .
Introduction In this post we're going to explore writing Backbone.js applications with a Ruby back-end. To assist with this, we're going to use Sinatra – a DSL (domain specific language) for rapidly creating web applications in Ruby. Similar to the section in Backbone Fundamentals on writing an application with Node.js, our server-side language (Ruby) will be used to power an API whilst Backbone.js will be the client consuming it. What Is Sinatra?