By Dave Thomas, David Heinemeier Hansson, Sam Ruby
Rails simply retains on altering. either Rails three and four, in addition to Ruby 1.9 and 2.0, deliver thousands of advancements, together with new APIs and big functionality improvements. The fourth version of this award-winning vintage has been reorganized and refocused so it's extra priceless than ever earlier than for builders new to Ruby and Rails.
Rails four introduces a few user-facing alterations, and the e-book has been up-to-date to compare the entire most modern alterations and new top practices in Rails. This comprises complete aid for Ruby 2.0, controller matters, Russian Doll caching, powerful parameters, Turbolinks, new try and bin listing layouts, and lots more and plenty more.
Ruby on Rails is helping you produce fine quality, beautiful-looking internet functions speedy. you consider developing the appliance, and Rails looks after the details.
Tens of millions of builders have used this award-winning e-book to benefit Rails. It's a large, far-reaching instructional and reference that's urged by means of the Rails middle staff. If you're new to Rails, you'll get step by step assistance. If you're an skilled developer, this publication offers you the excellent, insider info you need.
Rails has developed through the years, and this ebook has developed in addition to it. We nonetheless begin with a step by step walkthrough of establishing a true program, and in-depth chapters examine the integrated Rails beneficial properties. This variation now offers new Ruby and Rails clients additional information at the Ruby language and takes extra time to provide an explanation for key ideas all through. most sensible practices on how you can practice Rails proceed to alter, and this variation retains up. Examples use matters, Russian Doll caching, and Turbolinks, and the booklet focuses all through at the correct option to use Rails. also, this variation now works on Ruby 2.0, a brand new unencumber of Ruby with mammoth useful and function improvements.
This variation is for Rails4.0 and beyond.
Read or Download Agile Web Development with Rails 4 (Facets of Ruby) PDF
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Extra info for Agile Web Development with Rails 4 (Facets of Ruby)
This is great for development. However, this flexibility comes at a cost—it causes a short pause after you enter a URL before the application responds. That’s caused by the dispatcher reloading stuff. For development it’s a price worth paying, but in production it would be unacceptable. Because of this, this feature is disabled for production deployment (see Chapter 16, Task K: Deployment and Production, on page 233). erb template, we’ll use this instance variable to substitute the time into the output.
There’s a lot to Rails. But before going any further, let’s have a brief refresher —and for some of you, a brief introduction—to the Ruby language. report erratum • discuss In this chapter, we’ll see • objects: names and methods; • data: strings, arrays, hashes, and regular expressions; • control: if, while, blocks, iterators, and exceptions; • building blocks: classes and modules; • YAML and marshaling; and • common idioms that you will see used in this book. CHAPTER 4 Introduction to Ruby Many people who are new to Rails are also new to Ruby.
This makes sense; by putting the implementation of these business rules in the model, we make sure that nothing else in the application can make our data invalid. The model acts as both a gatekeeper and a data store. The view is responsible for generating a user interface, normally based on data in the model. For example, an online store will have a list of products to be displayed on a catalog screen. This list will be accessible via the model, but it will be a view that formats the list for the end user.