You'll be an accomplished Ruby programmer in no time The example application that the book builds - a user-generated news web site - is built upon with each following chapter, and concepts such as sessions, cookies and basic AJAX usage are gradually introduced. An entire chapter is devoted to learning Ruby in a fun way, using the interactive Ruby console, so you can follow along at home. Many methods take an “options” hash as a parameter, rather than having dozens of individual parameters.Want to learn all about Ruby on Rails 2.0, the web application framework that is inspiring developers around the world? The second edition of this practical, hands on book will: show you how to install Ruby on Rails on Windows, Mac, or Linux walk you, step by step, through the development of a Web 2.0 social news application, just like show you how to test, debug, benchmark, and deploy your Rails application Unlike other Rails books, this book doesn't assume that you are an experienced web developer, or that you've used Ruby before. This magic is great, but scary at first when you’re not sure how classes and tables are getting linked together. Yes, Rails has a pluralization engine to figure out what object maps to what table ( I kid you not). Rails has certain naming conventions it expects objects from the class Person to be saved to a database table named people. It’s true – the features/quirks make Rails stand out, but they’re confusing until they click. “Trust us, it’s good for you.” say the programmers. Try Why’s Poignant Guide To Ruby for more info (“Why” is the name of the author… it confused me too). These are the Ruby lessons that were tricky when starting out. Blocks are common in Ruby but take some getting used to, so be forewarned. The output would be 0, followed by 1 followed by 4 (and looks like “014″ since we didn’t include spaces). In this example, the numbers 0,1 and 2 are passed to a block (do… end) that takes a single parameter (i) and prints i squared. It helps to think of them as a type of anonymous function that can, but doesn’t have to, take a parameter. Blocks are useful when applying some function to each element of an array. These blocks can specify a parameter using |param| and then take actions, call functions of their own, and so on. Ruby has “blocks”, which are like anonymous functions passed to a loop or another function. Which means the same: set x to the default value unless it has some other value. If you write x = x || "default" it means “set x to itself (if it has a value), otherwise use the default.” An easier way to write this is Otherwise, it returns the string “default”. It means “test each value and return the first that’s not false.” So if a is false, it tries b. When put in a chain x = a || b || c || "default" Ruby has the || operator which is a bit funky. YAML (or YML) means “YAML Ain’t a Markup Language” - it’s a simple way to specify data: is a hash of key/value pairs. It lets you mix Ruby with HTML (for example): Hello there, Define and run maintenance tasks like setting up databases, reloading data, backing up, or even deploying an app to your website.Įrb is embedded Ruby, which is like PHP. Rails has a special IRB console to access your web app as it is running (excellent for live debugging). IRB is the interactive Ruby console (type “irb” to use). Rails helps make web applications, providing classes for saving to the database, handling URLs and displaying html (along with a webserver, maintenance tasks, a debugging console and much more). It has good RegEx support and works well for shell scripting. It has dozens of shortcuts that make it very clean methods are rarely over 10 lines. It is dynamically typed (no need for “int i”), interpreted, and can be modified at runtime (such as adding new methods to classes). Ruby is a programming language, similar to Python and Perl. Is Rails some type of magical drug that Ruby is on? (Depending on who you ask, yes.) Browse popular ruby on rails links on, Rails documentation and Ruby syntax & examples.Subversion and/or TortoiseSVN for source control.Aptana/RadRails (like Eclipse) or Ruby In Steel (like Visual Studio) for editing code.zip file containing Ruby, Apache, MySQL and PHP (for PhpMyAdmin), packaged and ready to go. Rails Tutorial: A cohesive book is worth dozens of hobbled-together online tutorials.Don’t read endless reviews trying to decide on the best one start somewhere and get going. Now that I have a few rails projects under my belt, here’s my shot at sparing you the suffering I experienced when first getting started. Unfortunately, many gotchas await the new programmer. Ruby on Rails is an elegant, compact and fun way to build web applications.
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