Agile Web Development with Rails 3.1 (Pragmatic Programmers) - download pdf or read online

By Sam Ruby, Dave Thomas, David Heinemeier Hansson

ISBN-10: 1934356549

ISBN-13: 9781934356548

Ruby on Rails is helping you produce fine quality, beautiful-looking net functions fast. you consider developing the appliance, and Rails looks after the main points. Tens of millions of builders have used this award-winning publication to profit Rails. it is a large, far-reaching educational and reference that is advised via the Rails center crew. in case you are new to Rails, you will get step by step assistance. if you are an skilled developer, this ebook offers you the great, insider details you wish. Rails has advanced through the years, and this ebook has advanced in addition to it. We nonetheless begin with a step by step walkthrough of creating a true software, and in-depth chapters examine the integrated Rails gains. This version now supplies new Ruby and Rails clients additional info at the Ruby language and takes extra time to give an explanation for key innovations all through. top practices on how one can observe Rails proceed to alter, and this version retains up. Examples use cookie subsidized periods, HTTP authentication, and energetic Record-based types, and the e-book focuses all through at the correct approach to use Rails. also, this variation now displays Ruby 1.9, a brand new unencumber of Ruby with massive practical and function advancements.

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That command added six files and a new directory to our application. That directory contains the template files for the controller’s views. In our case, we created a controller named say, so the views will be in the directory app/views/say. By default, Rails looks for templates in a file with the same name as the action it’s handling. erb in the directory app/views/say. erb? erb, and refresh your browser window. You should see it display our friendly greeting: In total, we’ve looked at two files in our Rails application tree.

It means that Rails has sensible defaults for just about every aspect of knitting together your application. Follow the conventions, and you can write a Rails application using less code than a typical Java web application uses in XML configuration. If you need to override the conventions, Rails makes that easy, too. Developers coming to Rails found something else, too. Rails isn’t playing catch-up with the new de facto web standards; it’s helping define them. And Rails makes it easy for developers to integrate features such as Ajax and RESTful interfaces into their code, because support is built in.

Class Project < ActiveRecord::Base belongs_to :portfolio has_one :project_manager has_many :milestones has_many :deliverables, through: milestones validates :name, :description, presence: true validates :non_disclosure_agreement, acceptance: true validates :short_name, uniqueness: true end Two other philosophical underpinnings keep Rails code short and readable: DRY and convention over configuration. DRY stands for don’t repeat yourself: every piece of knowledge in a system should be expressed in just one place.

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Agile Web Development with Rails 3.1 (Pragmatic Programmers) by Sam Ruby, Dave Thomas, David Heinemeier Hansson

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